Error when detail table expanded in master table in edit mode

[CH]

i wanted when the master record in edit mode and the detail table will auto expanded
i followed the example to check in prerender's grid item in edit and set to item.expanded = true 

 For Each item As GridDataItem In grdClaims.MasterTableView.Items
            If item.Edit Then
                        item.Expanded = True    <--- error "There was a problem extracting DataKeyValues from the DataSource. please ensure that DataKeyNames are specified correctly and all the fields specified exist in the datasource"

            End If
        Next

is there any problem to my code?

best regards

From LUI

Imports System.Data
Imports System.Data.SqlClient
Imports Telerik.WebControls
Imports localhost


Partial Class Pages_ClaimMain
    Inherits System.Web.UI.Page

    Private userID As String
    Private isAdmin As Boolean

    Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
        If Not Session("UserID") Is Nothing Then
            userID = Session("UserID")
            isAdmin = Session("IsAdmin")
        Else
            Response.Redirect("./default.aspx")
        End If



        If Not Page.IsPostBack Then
            With MnuMain
                If isAdmin Then

                    .Items.FindItemByValue("Administration").Items.FindItemByValue("UserAdmin").Visible = True
                    .Items.FindItemByValue("Administration").Visible = True
                Else
                    .Items.FindItemByValue("Administration").Items.FindItemByValue("UserAdmin").Visible = False
                    .Items.FindItemByValue("Administration").Visible = False
                End If

                Dim panelItem As RadMenuItem = .Items.FindItemByValue("Reporting")
                With panelItem.Items.FindItemByValue("AllClaims")
                    .NavigateUrl = "./ClaimReport.aspx?ReportType=AllClaims&UserID=" & userID
                    .Target = "_blank"
                End With
                With panelItem.Items.FindItemByValue("OpenClaims")
                    .NavigateUrl = "./ClaimReport.aspx?ReportType=OpenClaims&UserID=" & userID
                    .Target = "_blank"
                End With
                With panelItem.Items.FindItemByValue("ClaimantName")
                    '.NavigateUrl = "./ClaimReport.aspx?ReportType=ClaimantName&UserID=" & userID
                    .NavigateUrl = "javascript:showDialog('ClaimReport.aspx?ReportType=ClaimantName&UserID=" & userID & "', 'RadWin');"
                    '.Target = "_blank"
                End With
                With panelItem.Items.FindItemByValue("ClaimProperty")
                    '.NavigateUrl = "./ClaimReport.aspx?ReportType=ClaimProperty&UserID=" & userID
                    .NavigateUrl = "javascript:showDialog('ClaimReport.aspx?ReportType=ClaimProperty&UserID=" & userID & "', 'RadWin');"
                    '.Target = "_blank"
                End With
                With panelItem.Items.FindItemByValue("Insurer")
                    '.NavigateUrl = "./ClaimReport.aspx?ReportType=Insurer&UserID=" & userID
                    .NavigateUrl = "javascript:showDialog('ClaimReport.aspx?ReportType=Insurer&UserID=" & userID & "', 'RadWin');"
                    '.Target = "_blank"
                End With
                With panelItem.Items.FindItemByValue("HighRisk")
                    .NavigateUrl = "./ClaimReport.aspx?ReportType=HighRisk&UserID=" & userID
                    .Target = "_blank"
                End With
                panelItem = .Items.FindItemByValue("Administration")
                With panelItem.Items.FindItemByValue("UserAdmin")
                    .NavigateUrl = "javascript:showDialog('ClaimUserAdmin.aspx?UserID=" & userID & "', 'RadWin');"
                End With
                With panelItem.Items.FindItemByValue("CompanyAdmin")
                    .NavigateUrl = "javascript:showDialog('ClaimCompanyAdmin.aspx?UserID=" & userID & "', 'RadWin');"
                End With
            End With
        End If
    End Sub



    Protected Sub grdClaims_ItemCommand(ByVal source As Object, ByVal e As Telerik.WebControls.GridCommandEventArgs) Handles grdClaims.ItemCommand
        Dim claimWSObj As New ClaimWS

        Dim claimID As String = ""
        Dim commentID As String = ""
        Dim msg As String = ""
        Select Case e.CommandName
            Case RadGrid.ExpandCollapseCommandName
                For Each item As GridItem In e.Item.OwnerTableView.Items
                    If item.Expanded And Not item Is e.Item Then
                        item.Expanded = False
                    End If
                Next
            Case RadGrid.DeleteCommandName
                If e.Item.OwnerTableView.Name = "Claims" Then
                    claimID = e.Item.OwnerTableView.DataKeyValues(e.Item.ItemIndex)("Claim_ID")
                    If Not DeleteRecord(claimID) Then
                        e.Canceled = True
                    End If
                ElseIf e.Item.OwnerTableView.Name = "Comments" Then
                    claimID = CType(e.Item, GridDataItem).GetDataKeyValue("Claim_ID")
                    commentID = CType(e.Item, GridDataItem).GetDataKeyValue("Comment_ID")
                    If Not claimWSObj.DeleteComment(userID, claimID, commentID, msg) Then
                        e.Canceled = True
                    End If
                End If
            Case RadGrid.PerformInsertCommandName
            Case RadGrid.EditCommandName
                If e.Item.OwnerTableView.Name = "Claims" Then
                    claimWSObj.CreateLog(userID, "ACTION_RECORD", e.Item.OwnerTableView.Items(e.Item.ItemIndex).Item("Claim_ID").Text, "READ", "")
                    claimID = e.Item.OwnerTableView.DataKeyValues(e.Item.ItemIndex)("Claim_ID")
                    ViewState("ClaimID") = claimID
                    grdClaims.MasterTableView.IsItemInserted = False
                    grdClaims.Rebind()

                ElseIf e.Item.OwnerTableView.Name = "Comments" Then
                    grdClaims.MasterTableView.DetailTables(0).IsItemInserted = False
                    grdClaims.MasterTableView.DetailTables(0).Rebind()
                End If
            Case RadGrid.InitInsertCommandName
                If e.Item.OwnerTableView.Name = "Claims" Then
                    grdClaims.MasterTableView.ClearEditItems()
                    grdClaims.Rebind()
                ElseIf e.Item.OwnerTableView.Name = "Comments" Then
                    grdClaims.MasterTableView.ClearChildEditItems()
                    grdClaims.MasterTableView.DetailTables(0).Rebind()
                End If
            Case RadGrid.FilterCommandName
                If e.Item.OwnerTableView.Name = "Claims" Then

                ElseIf e.Item.OwnerTableView.Name = "Comments" Then

                End If

        End Select

    End Sub




    Protected Sub grdClaims_ItemDataBound(ByVal sender As Object, ByVal e As Telerik.WebControls.GridItemEventArgs) Handles grdClaims.ItemDataBound

    End Sub

    Protected Sub grdClaims_ItemCreated(ByVal sender As Object, ByVal e As Telerik.WebControls.GridItemEventArgs) Handles grdClaims.ItemCreated
        Dim claimWSObj As New ClaimWS
        Dim cbo As RadComboBox
        Dim grd As RadGrid
        Dim btn As Button
        Dim compareValid As CompareValidator
        Dim txt As TextBox
        Dim claimID As String

        If e.Item.OwnerTableView.Name = "Claims" Then
            If TypeOf e.Item Is GridEditFormItem AndAlso e.Item.IsInEditMode Then

                If TypeOf e.Item Is GridEditFormInsertItem Then


                    Dim insertedItem As GridEditableItem = e.Item.OwnerTableView.GetInsertItem
                    If Not insertedItem Is Nothing Then


                        compareValid = insertedItem.FindControl("cmpDateNotified")
                        compareValid.ValueToCompare = DateTime.Now.ToString("yy-MM-dd")


                        cbo = insertedItem.FindControl("cboCompanies")


                        cbo.DataSource = claimWSObj.GetCompanies(userID)
                        cbo.DataTextField = "Company_Name"
                        cbo.DataValueField = "Company_ID"


                        cbo = insertedItem.FindControl("cboClaimTypes")


                        cbo.DataSource = claimWSObj.GetClaimTypes
                        cbo.DataTextField = "Claim_Type"
                        cbo.DataValueField = "Type_ID"

                        cbo = insertedItem.FindControl("cboClaimStatus")

                        cbo.DataSource = claimWSObj.GetClaimStatus
                        cbo.DataTextField = "Claim_Status"
                        cbo.DataValueField = "Status_ID"

                        cbo = insertedItem.FindControl("cboInsurers")

                        cbo.DataSource = claimWSObj.GetInsurers
                        cbo.DataTextField = "Insurer_Name"
                        cbo.DataValueField = "Insurer_ID"

                        btn = insertedItem.FindControl("cmdInsert")
                        btn.Visible = True

                        btn = insertedItem.FindControl("cmdUpdate")
                        btn.Visible = False


                        grd = e.Item.FindControl("grdComments")
                        grd.Visible = False
                    End If
                Else
                    claimID = e.Item.OwnerTableView.DataKeyValues(e.Item.ItemIndex)("Claim_ID")
                    cbo = e.Item.FindControl("cboCompanies")
                    cbo.SelectedValue = DataBinder.Eval(e.Item.DataItem, "Company_ID")
                    cbo.DataSource = claimWSObj.GetCompanies(userID)
                    cbo.DataTextField = "Company_Name"
                    cbo.DataValueField = "Company_ID"

                    cbo = e.Item.FindControl("cboClaimTypes")
                    cbo.SelectedValue = DataBinder.Eval(e.Item.DataItem, "Type_ID")
                    cbo.DataSource = claimWSObj.GetClaimTypes
                    cbo.DataTextField = "Claim_Type"
                    cbo.DataValueField = "Type_ID"
                    cbo = e.Item.FindControl("cboClaimStatus")
                    cbo.SelectedValue = DataBinder.Eval(e.Item.DataItem, "Status_ID")
                    cbo.DataSource = claimWSObj.GetClaimStatus
                    cbo.DataTextField = "Claim_Status"
                    cbo.DataValueField = "Status_ID"
                    cbo = e.Item.FindControl("cboInsurers")
                    cbo.SelectedValue = DataBinder.Eval(e.Item.DataItem, "Insurer_ID")
                    cbo.DataSource = claimWSObj.GetInsurers
                    cbo.DataTextField = "Insurer_Name"
                    cbo.DataValueField = "Insurer_ID"

                    btn = e.Item.FindControl("cmdUpdate")
                    btn.Visible = True
                    btn = e.Item.FindControl("cmdInsert")
                    btn.Visible = False
                    compareValid = e.Item.FindControl("cmpDateNotified")
                    compareValid.ValueToCompare = DateTime.Now.ToString("yy-MM-dd")

                End If
            Else

            End If
        ElseIf e.Item.OwnerTableView.Name = "Comments" Then
            If TypeOf e.Item Is GridEditFormItem AndAlso e.Item.IsInEditMode Then
                If TypeOf e.Item Is GridEditFormInsertItem Then
                    Dim insertedItem As GridEditableItem = e.Item.OwnerTableView.GetInsertItem
                    If Not insertedItem Is Nothing Then
                        btn = e.Item.FindControl("cmdUpdate")
                        btn.Visible = False
                        btn = e.Item.FindControl("cmdInsert")
                        btn.Visible = True
                    End If
                Else
                    btn = e.Item.FindControl("cmdUpdate")
                    btn.Visible = True
                    btn = e.Item.FindControl("cmdInsert")
                    btn.Visible = False
                End If
            End If

        End If

    End Sub

    Protected Sub grdClaims_UpdateCommand(ByVal source As Object, ByVal e As Telerik.WebControls.GridCommandEventArgs) Handles grdClaims.UpdateCommand
        If e.Item.OwnerTableView.Name = "Claims" Then
            Dim claimWSObj As New ClaimWS
            Dim claimID As String = e.Item.OwnerTableView.DataKeyValues(e.Item.ItemIndex)("Claim_ID")
            Dim msg As String
            Dim editItem As GridEditableItem = e.Item
            Dim companyID As String = CType(editItem.FindControl("cboCompanies"), RadComboBox).SelectedValue
            Dim claimYear As Integer = CType(editItem.FindControl("txtYear"), RadMaskedTextBox).Text
            Dim insurerRef As String = CType(editItem.FindControl("txtInsureRef"), TextBox).Text.Trim
            Dim dateNotified As Date = CType(editItem.FindControl("dtpDateNotified"), RadDatePicker).SelectedDate
            Dim claimantName As String = CType(editItem.FindControl("txtClaimantName"), TextBox).Text.Trim
            Dim propertyName As String = CType(editItem.FindControl("txtProperty"), TextBox).Text.Trim
            Dim claimType As String = CType(editItem.FindControl("cboClaimTypes"), RadComboBox).SelectedValue
            Dim incidentDate As Date = CType(editItem.FindControl("dtpIncidentDate"), RadDatePicker).SelectedDate
            Dim claimStatus As String = CType(editItem.FindControl("cboClaimStatus"), RadComboBox).SelectedValue
            Dim value As Nullable(Of Double)
            If CType(editItem.FindControl("nbrValue"), RadNumericTextBox).Text = "" Then
                value = vbNull
            Else
                value = CType(editItem.FindControl("nbrValue"), RadNumericTextBox).Text
            End If
            Dim descOfclaim As String = CType(editItem.FindControl("txtDescOfClaim"), TextBox).Text
            Dim comments As String = "" 'CType(editItem.FindControl("txtComments"), TextBox).Text
            Dim insurerID As String = CType(editItem.FindControl("cboInsurers"), RadComboBox).SelectedValue
            Dim savillsRef As String = CType(editItem.FindControl("txtSavillsRef"), TextBox).Text
            If isValidInput(dateNotified, descOfclaim, comments, editItem, msg) Then
                If Not claimWSObj.UpdateClaims(claimID, companyID, savillsRef, claimYear, insurerRef, dateNotified, claimantName, propertyName, claimType, incidentDate, claimStatus, value, descOfclaim, comments, insurerID, userID) Then
                    lblMsg.Visible = True
                    lblMsg.Text = "* Fail to insert claim"
                    e.Canceled = True
                Else
                    lblMsg.Visible = False
                End If
            Else
                lblMsg.Visible = True
                lblMsg.Text = msg
                e.Canceled = True
            End If
        ElseIf e.Item.OwnerTableView.Name = "Comments" Then
        End If
    End Sub

    Protected Sub grdClaims_InsertCommand(ByVal source As Object, ByVal e As Telerik.WebControls.GridCommandEventArgs) Handles grdClaims.InsertCommand

        Dim claimWSObj As New ClaimWS
        Dim claimID As String
        Dim msg As String

        Dim editItem As GridEditableItem = e.Item
        If e.Item.OwnerTableView.Name = "Claims" Then
            Dim companyID As String = CType(editItem.FindControl("cboCompanies"), RadComboBox).SelectedValue
            Dim claimYear As Integer = CType(editItem.FindControl("txtYear"), RadMaskedTextBox).Text
            Dim insurerRef As String = CType(editItem.FindControl("txtInsureRef"), TextBox).Text.Trim
            Dim dateNotified As Date = CType(editItem.FindControl("dtpDateNotified"), RadDatePicker).SelectedDate
            Dim claimantName As String = CType(editItem.FindControl("txtClaimantName"), TextBox).Text.Trim
            Dim propertyName As String = CType(editItem.FindControl("txtProperty"), TextBox).Text.Trim
            Dim claimType As String = CType(editItem.FindControl("cboClaimTypes"), RadComboBox).SelectedValue
            Dim incidentDate As Date = CType(editItem.FindControl("dtpIncidentDate"), RadDatePicker).SelectedDate
            Dim claimStatus As String = CType(editItem.FindControl("cboClaimStatus"), RadComboBox).SelectedValue
            Dim value As Nullable(Of Double)
            If CType(editItem.FindControl("nbrValue"), RadNumericTextBox).Text = "" Then
                value = vbNull
            Else
                value = CType(editItem.FindControl("nbrValue"), RadNumericTextBox).Text
            End If
            Dim descOfClaim As String = CType(editItem.FindControl("txtDescOfClaim"), TextBox).Text
            Dim comments As String = "" 'CType(editItem.FindControl("txtComments"), TextBox).Text
            Dim insurerID As String = CType(editItem.FindControl("cboInsurers"), RadComboBox).SelectedValue
            Dim savillsRef As String = CType(editItem.FindControl("txtSavillsRef"), TextBox).Text
            If isValidInput(dateNotified, descOfClaim, comments, editItem, msg) Then
                If Not claimWSObj.InsertClaims(companyID, savillsRef, claimYear, insurerRef, dateNotified, claimantName, propertyName, claimType, incidentDate, claimStatus, value, descOfClaim, comments, insurerID, userID) Then
                    lblMsg.Visible = True
                    lblMsg.Text = "* Fail to insert claim"
                    e.Canceled = True
                Else
                    lblMsg.Visible = False
                End If
            Else
                lblMsg.Visible = True
                lblMsg.Text = msg
                e.Canceled = True
            End If
            grdClaims.CurrentPageIndex = 0
        ElseIf e.Item.OwnerTableView.Name = "Comments" Then
            Dim txt As TextBox = editItem.FindControl("txtComment")
            claimID = e.Item.OwnerTableView.ParentItem.GetDataKeyValue("Claim_ID")
            If Not claimWSObj.InsertComment(userID, claimID, txt.Text, msg) Then
                lblMsg.Visible = True
                lblMsg.Text = "msg"
                e.Canceled = True
            Else
                lblMsg.Visible = False
            End If

        End If
    End Sub

    Private Function isValidInput(ByVal dateNotified As Date, ByVal descOfClaim As String, ByVal comments As String, ByRef editItem As GridEditableItem, ByRef msg As String) As Boolean
        Dim cmpValid As CompareValidator
        If dateNotified > Now Then
            cmpValid = CType(editItem.FindControl("cmpDateNotified"), CompareValidator)
            cmpValid.IsValid = False
            Return False

        ElseIf descOfClaim.Length > 255 Then
            msg = "* The description of claim cannot excess 255 characters"
            Return False
        ElseIf comments.Length > 255 Then
            msg = "* The comments cannot excess 255 characters"
            Return False
        End If

        Return True
    End Function


    Private Function DeleteRecord(ByVal claimID As String) As Boolean
        Dim claimWSObj As New ClaimWS
        If Not claimWSObj.DeleteClaims(claimID, userID) Then
            Return False
        Else
            Return True
        End If
    End Function


    Protected Sub grdClaims_NeedDataSource(ByVal source As Object, ByVal e As Telerik.WebControls.GridNeedDataSourceEventArgs) Handles grdClaims.NeedDataSource
        Dim claimWSObj As New ClaimWS
        If Not Session("UserID") Is Nothing Then
            userID = Session("UserID")
            isAdmin = Session("IsAdmin")
        Else
            Response.Redirect("./default.aspx")
        End If
        grdClaims.DataSource = claimWSObj.GetClaims(userID).Tables(0)

    End Sub


    Protected Sub grdClaims_DetailTableDataBind(ByVal source As Object, ByVal e As Telerik.WebControls.GridDetailTableDataBindEventArgs) Handles grdClaims.DetailTableDataBind
        Dim dataItem As GridDataItem = CType(e.DetailTableView.ParentItem, GridDataItem)
        Dim claimWSObj As New ClaimWS
        grdClaims.DataSource = claimWSObj.GetComments(dataItem.GetDataKeyValue("Claim_ID"))

    End Sub





    Protected Sub grdClaims_PreRender(ByVal sender As Object, ByVal e As System.EventArgs) Handles grdClaims.PreRender

        For Each item As GridDataItem In grdClaims.MasterTableView.Items
            If item.Edit Then
                '        item.Expanded = True

            End If
        Next
        If Not isAdmin Then
            For Each grdTableView As GridTableView In grdClaims.MasterTableView.DetailTables
                grdTableView.GetColumn("DeleteCol").Display = False
            Next
            grdClaims.MasterTableView.GetColumn("DeleteCol").Display = False
        End If

    End Sub
End Class

<%@ Page Language="VB" AutoEventWireup="false" CodeFile="ClaimMain.aspx.vb" Inherits="Pages_ClaimMain" %>

<%@ Register Assembly="RadAjax.Net2" Namespace="Telerik.WebControls" TagPrefix="rad" %>

<%@ Register Assembly="RadInput.Net2" Namespace="Telerik.WebControls" TagPrefix="rad" %>
<%@ Register Assembly="RadCalendar.Net2" Namespace="Telerik.WebControls" TagPrefix="rad" %>
<%@ Register Assembly="RadComboBox.Net2" Namespace="Telerik.WebControls" TagPrefix="rad" %>

<%@ Register Assembly="RadWindow.Net2" Namespace="Telerik.WebControls" TagPrefix="rad" %>

<%@ Register Assembly="RadMenu.Net2" Namespace="Telerik.WebControls" TagPrefix="rad" %>
<%@ Register Assembly="RadPanelbar.Net2" Namespace="Telerik.WebControls" TagPrefix="rad" %>
<%@ Register Assembly="RadGrid.Net2" Namespace="Telerik.WebControls" TagPrefix="rad" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
    <title>PI Notification</title>

    <link href="./../css/customize.css" type="text/css" rel="stylesheet"/>

</head>
<body>

  <script type="text/javascript">
    function OnClientClose(sender,args)
    {
        //alert('test');
        window.location.reload();//- will reload the page (equal to pressing F5)
        //windowwindow.location.href = window.location.href;// - will refresh the page by reloading the URL



    }

</script>
<script language="javascript" type="text/javascript">
    function showDialog(url, win){
        //oWnd.setUrl(url);
        var oWnd = window.radopen(url, win);


    }
</script>
    <form id="form1" runat="server">
    <div>
        <table border="0" cellpadding="0" cellspacing="0" width="100%">
            <tr>
                <td style="vertical-align: top; width: 100%;">
                    <table border="0" cellpadding="1" cellspacing="1">
                        <tr>
                            <td style="height: 65px"><img src="../Images/Common/Savill_Logo_Default.JPG" /></td>
                            <td style="height: 65px;  width=100%; width: 72%;" >
                                <span style="font-size: 14pt; vertical-align: top; text-align: left;">Professional
                                Indemnity/Public Liability
                                <br />
                                Notifications
                                Register</span></td>
                            <td style="width: 300px; height: 65px; text-align: right; vertical-align: bottom;">
                                <rad:RadMenu ID="MnuMain" runat="server" style="top: 0px; left: 0px;" Skin="Default">
                                    <Items>
                                        <rad:RadMenuItem runat="server" Text="Reporting" Value="Reporting">
                                            <Items>
                                                <rad:RadMenuItem runat="server" Text="All Claims" Value="AllClaims">
                                                </rad:RadMenuItem>
                                                <rad:RadMenuItem runat="server" Text="Open Claims" Value="OpenClaims">
                                                </rad:RadMenuItem>
                                                <rad:RadMenuItem runat="server" Text="Search For Claimant" Value="ClaimantName">
                                                </rad:RadMenuItem>
                                                <rad:RadMenuItem runat="server" Text="Serach Claim Property" Value="ClaimProperty">
                                                </rad:RadMenuItem>
                                                <rad:RadMenuItem runat="server" Text="Print By Insurer" Value="Insurer">
                                                </rad:RadMenuItem>
                                                <rad:RadMenuItem runat="server" Text="Print Legal And High Risk" Value="HighRisk">
                                                </rad:RadMenuItem>
                                            </Items>
                                        </rad:RadMenuItem>
                                        <rad:RadMenuItem runat="server" Text="Administration" Value="Administration">
                                            <Items>
                                                <rad:RadMenuItem runat="server" Text="User Admin" Value="UserAdmin">
                                                </rad:RadMenuItem>
                                                <rad:RadMenuItem runat="server" Text="Company Admin" Value="CompanyAdmin">
                                                </rad:RadMenuItem>
                                            </Items>
                                        </rad:RadMenuItem>
                                    </Items>
                                </rad:RadMenu>
                                </td>
                        </tr>
                    </table>
                    <hr />
                 </td>
            </tr>
            <tr>
                <td style="vertical-align: top; text-align: left; height=100%; width: 100%; height: 546px;">
                    <table border="0" cellpadding="0" cellspacing="0" height="100%">
                        <tr>

                            <td style="width: 100%; vertical-align: top; height: 530px;">
                                <asp:Label ID="lblMsg" runat="server" Font-Bold="True" ForeColor="Red" Text="lblMsg"
                                    Visible="False" Width="536px"></asp:Label><rad:RadGrid ID="grdClaims" runat="server" AllowPaging="True" AllowSorting="True"
                                    AutoGenerateColumns="False" GridLines="None" PageSize="20"
                                    ShowFooter="True" Skin="WebBlue" AllowFilteringByColumn="True" ShowGroupPanel="True">


                                    <MasterTableView AllowMultiColumnSorting="True" BorderColor="Silver"
                                        BorderWidth="2px" CellPadding="0" CommandItemDisplay="Top" DataKeyNames="Claim_ID" GridLines="Both" ShowFooter="False" Name="Claims">
                                        <EditFormSettings EditFormType="Template" >
                                            <FormTemplate>
                                                <table style="width:1000px; " border="0" cellpadding="1" cellspacing="1">
                                                    <tr>
                                                        <td style="width:400px">
                                                            <table>
                                                                <tr >
                                                                    <td style="width: 100px">
                                                                        <strong>Company</strong></td>
                                                                    <td style="width:300px">
                                                                        <rad:RadComboBox ID="cboCompanies" runat="server"
                                                                            Skin="Vista" SkinsPath="~/RadControls/ComboBox/Skins" Width="300px" DataTextField="Company_Name" DataValueField="Company_ID"  AppendDataBoundItems="True">
                                                                        </rad:RadComboBox>
                                                                    </td>
                                                                    <td></td>
                                                                </tr>
                                                            </table>
                                                        </td>
                                                        <td style="width:500px">
                                                            <table>
                                                                <tr>
                                                                    <td colspan ="3">
                                                                        <table>
                                                                            <tr>
                                                                                <td style="width: 80px">
                                                                                    <strong>Year</strong></td>
                                                                                <td style="text-align: left" >
                                                                        <rad:RadMaskedTextBox ID="txtYear" runat="server" Width="40px" LabelCssClass="radLabelCss_Default" Mask="####" MaxLength="4" Skin="" Text='<%# DataBinder.Eval(Container, "DataItem.Year") %>' Font-Names="Arial">
                                                                        </rad:RadMaskedTextBox><asp:RequiredFieldValidator ID="RequiredFieldValidator1" runat="server" ControlToValidate="txtYear"
                                                                            ErrorMessage="Year of notification is required" Display="Dynamic" Width="176px"></asp:RequiredFieldValidator></td>
                                                                                <td style="width:80px;  text-align:right">Savills Ref</td>
                                                                                <td style="width:auto">
                                                                        <asp:TextBox ID="txtSavillsRef" runat="server" Text='<%# DataBinder.Eval(Container, "DataItem.FPDSavills_Ref") %>' Width="115px" MaxLength="20"></asp:TextBox></td>
                                                                            </tr>
                                                                        </table>
                                                                    </td>
                                                                </tr>
                                                            </table>
                                                        </td>
                                                    </tr>
                                                    <tr>
                                                        <td style="width:400px">
                                                            <table>
                                                                <tr >
                                                                    <td style="width: 100px">
                                                                        <strong>Insurer</strong></td>
                                                                    <td style="width:300px">
                                                                        <rad:RadComboBox ID="cboInsurers" runat="server" Skin="Vista" SkinsPath="~/RadControls/ComboBox/Skins" Width="300px" DataTextField="Insurer_Name" DataValueField="Insurer_ID">
                                                                        </rad:RadComboBox>
                                                                    </td>
                                                                </tr>
                                                            </table>
                                                        </td>
                                                        <td style="width:500px">
                                                            <table>
                                                                <tr>
                                                                    <td style="width: 80px" >
                                                                        Insurer Ref</td>
                                                                    <td>
                                                                        <asp:TextBox ID="txtInsureRef" runat="server" Text='<%# DataBinder.Eval(Container, "DataItem.Insurer_Ref_No") %>' Width="250px" MaxLength="50"></asp:TextBox></td>
                                                                </tr>
                                                            </table>
                                                        </td>
                                                    </tr>
                                                    <tr>
                                                        <td style="width:400px">
                                                            <table>
                                                                <tr >
                                                                    <td style="width: 100px">
                                                                        <strong>Claimant Name</strong></td>
                                                                    <td style="width:300px">
                                                                        <asp:TextBox ID="txtClaimantName" runat="server" Text='<%# DataBinder.Eval(Container, "DataItem.Claimant_Name") %>' Width="300px" MaxLength="50"></asp:TextBox>
                                                                        <asp:RequiredFieldValidator ID="RequiredFieldValidator8" runat="server" ControlToValidate="txtClaimantName"
                                                                            ErrorMessage="* Required Claimant Name" Display="Dynamic" Width="300px"></asp:RequiredFieldValidator></td>
                                                                </tr>
                                                            </table>
                                                        </td>
                                                        <td style="width:500px">
                                                            <table>
                                                                <tr>
                                                                    <td style="width:80px">
                                                                        Claim Status</td>
                                                                    <td style="width:auto">
                                                                        <rad:RadComboBox ID="cboClaimStatus" runat="server" Skin="Vista" SkinsPath="~/RadControls/ComboBox/Skins" Width="250px" DataTextField="Claim_Status" DataValueField="Status_ID">
                                                                        </rad:RadComboBox>
                                                                    </td>
                                                                </tr>
                                                            </table>
                                                        </td>
                                                    </tr>
                                                    <tr>
                                                        <td style="width:400px">
                                                            <table>
                                                                <tr >
                                                                    <td style="width: 100px">
                                                                        <strong>Claim Type</strong></td>
                                                                    <td  style="width:300px">
                                                                        <rad:RadComboBox ID="cboClaimTypes" runat="server" Skin="Vista" SkinsPath="~/RadControls/ComboBox/Skins" Width="300px" DataTextField="Claim_Type" DataValueField="Type_ID" >
                                                                        </rad:RadComboBox>
                                                                    </td>
                                                                </tr>
                                                            </table>
                                                        </td>
                                                        <td style="width:500px">
                                                            <table>
                                                                <tr>
                                                                    <td style="width:80px">
                                                                        Value</td>
                                                                    <td style="width:auto">
                                                                        <rad:RadNumericTextBox ID="nbrValue" runat="server" Width="100px" Culture="English (United States)" DbValue='<%# DataBinder.Eval(Container, "DataItem.Value") %>' LabelCssClass="radLabelCss_Default" Skin="" MinValue="0" MaxLength="12" style="text-align: right" Font-Names="Arial">
                                                                            <NumberFormat AllowRounding="True" />
                                                                        </rad:RadNumericTextBox></td>
                                                                </tr>
                                                            </table>
                                                        </td>
                                                    </tr>
                                                    <tr>
                                                        <td style="width:400px" >
                                                            <table>
                                                                <tr >
                                                                    <td style="width:100px">
                                                                        <strong>Property</strong></td>
                                                                    <td  style="width:300px">
                                                                        <asp:TextBox ID="txtProperty" runat="server" Text='<%# DataBinder.Eval(Container, "DataItem.Property") %>' width="300px"  MaxLength="200"></asp:TextBox>
                                                                        <asp:RequiredFieldValidator ID="RequiredFieldValidator9" runat="server" ControlToValidate="txtProperty"
                                                                            ErrorMessage="* Property Name is Required "  Display="Dynamic"></asp:RequiredFieldValidator></td>
                                                                </tr>
                                                            </table>
                                                        </td>
                                                        <td style="width:500px; vertical-align: text-top; text-align: left;" rowspan="3">
                                                            Desc of claim<br />
                                                            <asp:TextBox ID="txtDescOfClaim" runat="server" Height="70px" MaxLength="220" Text='<%# DataBinder.Eval(Container, "DataItem.Description_of_Claim") %>'
                                                                TextMode="MultiLine" Width="335px" Font-Names="Arial"></asp:TextBox>
                                                        </td>
                                                    </tr>
                                                    <tr>
                                                        <td style="width:400px">
                                                            <table>
                                                                <tr >
                                                                    <td style="width: 100px">
                                                                        <strong>Incident date</strong></td>
                                                                    <td style="width:300px">
                                                                        <rad:RadDatePicker ID="dtpIncidentDate" runat="server" Skin="Office2007" Width="300px" dbselecteddate='<%#DataBinder.Eval(Container, "DataItem.incident_Date") %>' Culture="English (United Kingdom)" EnableTyping="False">
                                                                            <Calendar Skin="Office2007">
                                                                            </Calendar>
                                                                            <DateInput Skin="Office2007" ReadOnly="True">
                                                                            </DateInput>
                                                                        </rad:RadDatePicker>
                                                                        <asp:RequiredFieldValidator ID="RequiredFieldValidator10" runat="server" ControlToValidate="dtpIncidentDate"
                                                                            ErrorMessage="* Incident date is required" Width="256px" Display="Dynamic"></asp:RequiredFieldValidator><asp:CompareValidator ID="CompareValidator1" runat="server" ControlToCompare="dtpDateNotified"
                                                                            ControlToValidate="dtpIncidentDate" ErrorMessage="Incident date must be before or equal to date notified"
                                                                            Operator="LessThanEqual" Width="256px" Display="Dynamic"></asp:CompareValidator></td>
                                                                </tr>
                                                            </table>
                                                        </td>

                                                    </tr>
                                                    <tr>
                                                        <td style="width:400px; height: 81px;">
                                                            <table>
                                                                <tr >
                                                                    <td style="width: 100px">
                                                                        <strong>Date notified</strong></td>
                                                                    <td  style="width:300px; vertical-align=top">
                                                                        <rad:RadDatePicker ID="dtpDateNotified" runat="server" Skin="Office2007" Width="300px" dbselecteddate='<%#DataBinder.Eval(Container, "DataItem.Date_Notified") %>' Culture="English (United Kingdom)" EnableTyping="False">
                                                                            <Calendar Skin="Office2007">
                                                                            </Calendar>
                                                                            <DateInput Skin="Office2007" ReadOnly="True">
                                                                            </DateInput>
                                                                        </rad:RadDatePicker>
                                                                        <asp:RequiredFieldValidator ID="RequiredFieldValidator7" runat="server" ControlToValidate="dtpDateNotified"
                                                                            ErrorMessage="* Date notified is required" Width="248px" Display="Dynamic"></asp:RequiredFieldValidator><asp:CompareValidator ID="cmpDateNotified" runat="server" ControlToValidate="dtpDateNotified"
                                                                            ErrorMessage="Date Notified must today or before" Operator="LessThanEqual" Width="248px"  Type="Date" Display="Dynamic"></asp:CompareValidator></td>
                                                                </tr>
                                                            </table>
                                                        </td>

                                                    </tr>
                                                    <tr>
                                                        <td style="height: 18px" colspan="2">
                                                            &nbsp;</td>
                                                    </tr>
                                                    <tr>
                                                        <td  colspan="2" style="vertical-align: top; text-align: left">
                                                            </td>
                                                    </tr>
                                                </table>
                                                    <asp:Button ID="cmdUpdate" runat="server" CommandName="Update" text= "Update" Visible="False" OnClientClick="return confirm('Confirm update claim record?');"/>
                                                    <asp:Button ID="cmdInsert" runat="server" CommandName="PerformInsert" Text="Insert" Visible="False" OnClientClick="return confirm('Confirm insert claim record?');" />
                                                    <asp:Button ID="cmdCancel" runat="server" CommandName="Cancel" Text="Cancel" CausesValidation="False" />
                                            </FormTemplate>
                                            <EditColumn UniqueName="EditCommandColumn1">
                                            </EditColumn>
                                        </EditFormSettings>
                                        <Columns>
                                            <rad:GridEditCommandColumn>
                                                <HeaderStyle Width="50px" />
                                                <ItemStyle HorizontalAlign="Center" />
                                            </rad:GridEditCommandColumn>
                                            <rad:GridButtonColumn CommandName="Delete" Text="Delete" UniqueName="DeleteCol" ConfirmText="Are you sure you want to delete record?">
                                                <HeaderStyle Width="50px" />
                                                <ItemStyle HorizontalAlign="Center" />
                                            </rad:GridButtonColumn>
                                            <rad:GridBoundColumn AllowFiltering="False" DataField="Claim_ID" HeaderText="ID"
                                                UniqueName="Claim_ID" AutoPostBackOnFilter="True">
                                                <ItemStyle HorizontalAlign="Center" />
                                                <HeaderStyle Width="50px" />
                                            </rad:GridBoundColumn>
                                            <rad:GridBoundColumn DataField="Date_Notified" DataFormatString="{0:dd-MM-yy}"
                                                DataType="System.DateTime" HeaderText="Notified" UniqueName="Date_Notified" AllowFiltering="False" >
                                                <ItemStyle HorizontalAlign="Right" />
                                                <HeaderStyle Width="100px" />
                                            </rad:GridBoundColumn>
                                            <rad:GridBoundColumn DataField="Company_Name" HeaderText="Company"
                                                UniqueName="Company_Name" AutoPostBackOnFilter="True" CurrentFilterFunction="Contains">
                                                <HeaderStyle Width="180px" />
                                            </rad:GridBoundColumn>
                                            <rad:GridBoundColumn AllowFiltering="False" DataField="Insurer_Ref" HeaderText="Insurer Ref"
                                                UniqueName="Insurer_Ref">
                                                <HeaderStyle Width="80px" />
                                            </rad:GridBoundColumn>
                                            <rad:GridBoundColumn DataField="Year" DataType="System.Int16"
                                                HeaderText="Year" UniqueName="Year" AutoPostBackOnFilter="True" CurrentFilterFunction="Contains">
                                                <ItemStyle HorizontalAlign="Center" />
                                                <HeaderStyle Width="120px" />
                                            </rad:GridBoundColumn>
                                            <rad:GridBoundColumn DataField="Property" HeaderText="Property"
                                                UniqueName="Property" AutoPostBackOnFilter="True" CurrentFilterFunction="Contains">
                                                <HeaderStyle Width="180px" />
                                            </rad:GridBoundColumn>
                                            <rad:GridBoundColumn AllowFiltering="False" DataField="Incident_Date" DataFormatString="{0:dd-MM-yy}"
                                                DataType="System.DateTime" HeaderText="Incident" UniqueName="Incident_Date">
                                                <ItemStyle HorizontalAlign="Right" />
                                                <HeaderStyle Width="90px" />
                                            </rad:GridBoundColumn>
                                            <rad:GridBoundColumn AllowFiltering="False" DataField="Claimant_Name" HeaderText="Claimant"
                                                UniqueName="Claimant_Name">
                                                <HeaderStyle Width="180px" />
                                            </rad:GridBoundColumn>
                                            <rad:GridBoundColumn DataField="Claim_Type" HeaderText="Claim Type"
                                                UniqueName="Claim_Type" AutoPostBackOnFilter="True" CurrentFilterFunction="Contains">
                                                <HeaderStyle Width="120px" />
                                            </rad:GridBoundColumn>
                                            <rad:GridBoundColumn DataField="Claim_Status" HeaderText="Status" UniqueName="Claim_Status" AutoPostBackOnFilter="True" CurrentFilterFunction="Contains">
                                            </rad:GridBoundColumn>
                                            <rad:GridBoundColumn DataField="Company_ID" HeaderText="Company_ID" UniqueName="Company_ID"
                                                Visible="False">
                                            </rad:GridBoundColumn>
                                            <rad:GridBoundColumn DataField="FPDSavills_Ref" HeaderText="Savills_Ref" UniqueName="FPDSavills_Ref"
                                                Visible="False">
                                            </rad:GridBoundColumn>
                                            <rad:GridBoundColumn DataField="Status" HeaderText="Status" UniqueName="Status" Visible="False" AllowFiltering="False">
                                            </rad:GridBoundColumn>
                                            <rad:GridBoundColumn DataField="Value" HeaderText="Value" UniqueName="Value" Visible="False">
                                            </rad:GridBoundColumn>
                                            <rad:GridBoundColumn DataField="Description_of_claim" HeaderText="Desc of claim"
                                                UniqueName="Description_of_claim" Visible="False">
                                            </rad:GridBoundColumn>
                                            <rad:GridBoundColumn DataField="Comments" HeaderText="Comments" UniqueName="Comments"
                                                Visible="False">
                                            </rad:GridBoundColumn>
                                        </Columns>
                                        <ExpandCollapseColumn Resizable="False">
                                            <HeaderStyle Width="20px" />
                                        </ExpandCollapseColumn>
                                        <RowIndicatorColumn Visible="False">
                                            <HeaderStyle Width="20px" />
                                        </RowIndicatorColumn>
                                        <DetailTables>
                                            <rad:GridTableView runat="server" AllowFilteringByColumn="False" DataKeyNames="Claim_ID,Comment_ID" CommandItemDisplay="Top" GridLines="Both" Name="Comments">
                                                <EditFormSettings EditFormType="Template">
                                                    <EditColumn UniqueName="EditCommandColumn1">
                                                    </EditColumn>
                                                    <FormTemplate>
                                                        Comment<br />
                                                        <asp:TextBox ID="txtComment" runat="server" Height="136px" TextMode="MultiLine" Width="464px" Text='<%# DataBinder.Eval(Container, "DataItem.CommentText") %>'></asp:TextBox>
                                                        <asp:RequiredFieldValidator ID="RequiredFieldValidator2" runat="server" ControlToValidate="txtComment"
                                                            ErrorMessage="RequiredFieldValidator" Width="448px">* Comment is required</asp:RequiredFieldValidator><br />
                                                        <asp:Button ID="cmdInsert" runat="server" CommandName="PerformInsert" Text="Insert" OnClientClick="return confirm('Confirm insert comment?');" />
                                                        <asp:Button ID="cmdUpdate" runat="server" CommandName="Update" Text="Update" OnClientClick="return confirm('Confirm update comment?');" />
                                                        <asp:Button ID="cmdCancel" runat="server" CommandName="Cancel" Text="Cancel" />
                                                    </FormTemplate>
                                                </EditFormSettings>
                                                <Columns>
                                                    <rad:GridEditCommandColumn>
                                                    </rad:GridEditCommandColumn>
                                                    <rad:GridButtonColumn CommandName="Delete"  Text="Delete"
                                                        UniqueName="DeleteCol">
                                                    </rad:GridButtonColumn>
                                                    <rad:GridBoundColumn DataField="Comment_ID" HeaderText="Comment ID" UniqueName="Comment_ID" Visible="False">
                                                    </rad:GridBoundColumn>
                                                    <rad:GridBoundColumn HeaderText="Comment" UniqueName="CommentText" DataField="CommentText"  >
                                                        <HeaderStyle Width="250px" />
                                                    </rad:GridBoundColumn>
                                                    <rad:GridBoundColumn DataField="Update_Date" DataType="System.DateTime" HeaderText="Last Update"
                                                        UniqueName="Update_Date" DataFormatString="{0:dd-MM-yy}">
                                                        <HeaderStyle Width="120px" />
                                                    </rad:GridBoundColumn>
                                                    <rad:GridBoundColumn DataField="Update_User" HeaderText="Update By" UniqueName="Update_User">
                                                        <HeaderStyle Width="120px" />
                                                    </rad:GridBoundColumn>
                                                </Columns>
                                                <ExpandCollapseColumn Resizable="False" Visible="False">
                                                    <HeaderStyle Width="20px" />
                                                </ExpandCollapseColumn>
                                                <RowIndicatorColumn Visible="False">
                                                    <HeaderStyle Width="20px" />
                                                </RowIndicatorColumn>
                                            </rad:GridTableView>
                                        </DetailTables>
                                    </MasterTableView>
                                    <HeaderStyle HorizontalAlign="Center" />
                                    <PagerStyle Mode="NextPrevAndNumeric" />
                                    <ClientSettings AllowDragToGroup="True">
                                        <Resizing AllowColumnResize="True" />
                                    </ClientSettings>
                                </rad:RadGrid>
                            </td>
                        </tr>
                    </table>

                </td>
            </tr>
        </table>

        <rad:RadWindowManager ID="winMain" runat="server" Skin="Vista"  >
            <Windows>
                <rad:RadWindow ID="RadWin" runat="server" Left="" NavigateUrl="" SkinsPath="~/RadControls/Window/Skins"   OnClientClose="OnClientClose"
                    Title="" Top="" Height="600px" Modal="True" Width="800px" />

            </Windows>
        </rad:RadWindowManager>
        &nbsp;

    </div>
    </form>
</body>
</html>

[Yavor]

Hello CH,

Attached to this message, is a small project sample, which handles a similar task.
I hope this helps.

Greetings,
Yavor
the Telerik team

Check out Telerik Trainer, the state of the art learning tool for Telerik products.

[Ian]

Disregard