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RequiredValidator error when bind selected value

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DropDownList

This is a migrated thread and some comments may be shown as answers.

Joe asked on 06 Sep 2013, 09:07 AM

ddl.jpg

In edit mode of the grid, there is a dropdownlist for user to select.

For new record, it will select default message "Please select"
For existing record, it will databind the value from db to become selected value

I had added the requiredvalidator to make sure user had selected dropdownlist.
it works when user create a new record, it will display error message if user not select.

but it had error when user edit the record, even though the dropdownlist had selected value.
it still display error message

<%@ Page Title="" Language="VB" MasterPageFile="~/LRDB.master" AutoEventWireup="false" CodeFile="Admin_dictionary_BU.aspx.vb" Inherits="Admin_Admin_dictionary_BU" %>

<asp:Content ID="Content1" ContentPlaceHolderID="head" Runat="Server">

</asp:Content>

<asp:Content ID="Content2" ContentPlaceHolderID="ContentPlaceHolder2" Runat="Server">

<br />

<strong><span class="style4">Business Unit</span><br /> </strong><br />

<telerik:RadCodeBlock ID="RadCodeBlock1" runat="server">

<script type="text/javascript">

function RowDblClick(sender, eventArgs) {

sender.get_masterTableView().editItem(eventArgs.get_itemIndexHierarchical());

}

function conformbox() {

var con = confirm("Are you sure want to delete?");

if (con == true) {

return true;

}

else {

return false;

}

</script>

</telerik:RadCodeBlock>

<telerik:RadAjaxLoadingPanel ID="RadAjaxLoadingPanel1" runat="server">

</telerik:RadAjaxLoadingPanel>

<telerik:RadGrid ID="RadGrid_BU" runat="server" CellSpacing="0"

DataSourceID="LDS_BU" width="1000" PageSize="15"

GridLines="None" style="margin-top: 0px" AllowFilteringByColumn="True"

AllowPaging="True" AllowSorting="True" AutoGenerateColumns="False"

ShowStatusBar="True" AllowAutomaticDeletes="True" AllowAutomaticInserts="True"

AllowAutomaticUpdates="True">

<GroupingSettings CaseSensitive="false" />

<MasterTableView AutoGenerateColumns="False"

DataKeyNames="BU_ID" DataSourceID="LDS_BU"

AllowFilteringByColumn="False" AllowPaging="False"

CommandItemDisplay="Top" OverrideDataSourceControlSorting="true" >

<CommandItemSettings ExportToPdfText="Export to PDF" />

<RowIndicatorColumn FilterControlAltText="Filter RowIndicator column"

Visible="True">

</RowIndicatorColumn>

<ExpandCollapseColumn FilterControlAltText="Filter ExpandColumn column"

Visible="True">

</ExpandCollapseColumn>

<Columns>

<telerik:GridEditCommandColumn UniqueName="EditCommandColumn">

</telerik:GridEditCommandColumn>

<telerik:GridBoundColumn DataField="BU_ID"

FilterControlAltText="Filter BU_ID column" HeaderText="BU_ID"

SortExpression="BU_ID" UniqueName="BU_ID" Visible="false">

</telerik:GridBoundColumn>

<telerik:GridBoundColumn DataField="BU_Name"

FilterControlAltText="Filter BU_Name column" HeaderText="BU Name"

SortExpression="BU_Name" UniqueName="BU_Name">

</telerik:GridBoundColumn>

<telerik:GridBoundColumn DataField="shortname"

FilterControlAltText="Filter shortname column" HeaderText="Shortname"

SortExpression="shortname" UniqueName="shortname">

</telerik:GridBoundColumn>

<telerik:GridBoundColumn DataField="bu_addr"

FilterControlAltText="Filter bu_addr column" HeaderText="Address"

SortExpression="bu_addr" UniqueName="bu_addr">

</telerik:GridBoundColumn>

<telerik:GridBoundColumn DataField="BU_Tel"

FilterControlAltText="Filter BU_Tel column" HeaderText="Telephone"

SortExpression="BU_Tel" UniqueName="BU_Tel">

</telerik:GridBoundColumn>

<telerik:GridBoundColumn DataField="BU_TelPre"

FilterControlAltText="Filter BU_TelPre column" HeaderText="Telephone Prefix"

SortExpression="BU_TelPre" UniqueName="BU_TelPre">

</telerik:GridBoundColumn>

<telerik:GridBoundColumn DataField="BU_Fax"

FilterControlAltText="Filter BU_Fax column" HeaderText="Fax No."

SortExpression="BU_Fax" UniqueName="BU_Fax">

</telerik:GridBoundColumn>

<telerik:GridBoundColumn DataField="BU_FaxPre"

FilterControlAltText="Filter BU_FaxPre column" HeaderText="Fax No. Prefix"

SortExpression="BU_FaxPre" UniqueName="BU_FaxPre">

</telerik:GridBoundColumn>

<telerik:GridBoundColumn DataField="BU_SpeedDial"

FilterControlAltText="Filter BU_SpeedDial column" HeaderText="SpeedDial"

SortExpression="BU_SpeedDial" UniqueName="BU_SpeedDial">

</telerik:GridBoundColumn>

</Columns>

<EditFormSettings EditFormType="Template">

<EditColumn FilterControlAltText="Filter EditCommandColumn1 column"

UniqueName="EditCommandColumn1">

</EditColumn>

<FormTemplate>

<table id="Table2" cellspacing="2" cellpadding="1" width="50%" border="1" rules="none"

style="border-collapse: collapse;">

<tr class="EditFormHeader">

<td style="width:150px">

<asp:Label ID="Label5" Text="Company" runat="server"></asp:Label>

</td>

<td>

<telerik:RadDropDownList ID="rdl_company" runat="server" DataSourceID="LDS_Company"

DataValueField="CompID" DataTextField="CompanyName" DefaultMessage="Please select..." >

</telerik:RadDropDownList>

<asp:RequiredFieldValidator ID="RequiredFieldValidator11" runat="server" ControlToValidate="rdl_company"

ErrorMessage="Please select a Company." ></asp:RequiredFieldValidator>

</td>

</tr>

<tr >

<td >

<asp:Label ID="lb" Text="BU Name" runat="server"></asp:Label>

</td>

<td>

<asp:TextBox ID="tb_BU_name" runat="server" Text='<%# Bind("BU_Name") %>' TabIndex="2"></asp:TextBox>

</td>

</tr>

<tr >

<td >

<asp:Label ID="Label1" Text="ShortName" runat="server"></asp:Label>

</td>

<td>

<asp:TextBox ID="tb_shortname" runat="server" Text='<%# Bind("shortname") %>' TabIndex="2"></asp:TextBox>

</td>

</tr>

<tr >

<td >

<asp:Label ID="Label2" Text="Address" runat="server"></asp:Label>

</td>

<td>

<asp:TextBox ID="tb_BU_addr" runat="server" Text='<%# Bind("BU_addr") %>' TabIndex="2" Width="300" TextMode="MultiLine"></asp:TextBox>

</td>

</tr>

<tr >

<td >

<asp:Label ID="Label3" Text="Telephone" runat="server"></asp:Label>

</td>

<td>

<asp:TextBox ID="tb_tel" runat="server" Text='<%# Bind("bu_tel") %>' TabIndex="2"></asp:TextBox>

<asp:RegularExpressionValidator ID="RegularExpressionValidator1" runat="server" Display="Dynamic"

ErrorMessage="Please, enter valid phone number." ValidationExpression="\d+" ControlToValidate="tb_tel">

</asp:RegularExpressionValidator>

</td>

</tr>

<tr >

<td >

<asp:Label ID="Label4" Text="Telephone Prefix" runat="server"></asp:Label>

</td>

<td>

<asp:TextBox ID="tb_telpre" runat="server" Text='<%# Bind("bu_telpre") %>' TabIndex="2"></asp:TextBox>

<asp:RegularExpressionValidator ID="RegularExpressionValidator2" runat="server" Display="Dynamic"

ErrorMessage="Please, enter valid phone number." ValidationExpression="\d+" ControlToValidate="tb_telpre">

</asp:RegularExpressionValidator>

</td>

</tr>

<tr >

<td >

<asp:Label ID="Label6" Text="Fax No." runat="server"></asp:Label>

</td>

<td>

<asp:TextBox ID="tb_fax" runat="server" Text='<%# Bind("bu_fax") %>' TabIndex="2"></asp:TextBox>

<asp:RegularExpressionValidator ID="RegularExpressionValidator3" runat="server" Display="Dynamic"

ErrorMessage="Please, enter valid phone number." ValidationExpression="\d+" ControlToValidate="tb_fax">

</asp:RegularExpressionValidator>

</td>

</tr>

<tr >

<td >

<asp:Label ID="Label7" Text="Fax No. Prefix" runat="server"></asp:Label>

</td>

<td>

<asp:TextBox ID="tb_faxpre" runat="server" Text='<%# Bind("bu_faxpre") %>' TabIndex="2"></asp:TextBox>

<asp:RegularExpressionValidator ID="RegularExpressionValidator4" runat="server" Display="Dynamic"

ErrorMessage="Please, enter valid phone number." ValidationExpression="\d+" ControlToValidate="tb_faxpre">

</asp:RegularExpressionValidator>

</td>

</tr>

<tr >

<td >

<asp:Label ID="Label8" Text="SpeedDial" runat="server"></asp:Label>

</td>

<td>

<asp:TextBox ID="tb_speeddial" runat="server" Text='<%# Bind("bu_speeddial") %>' TabIndex="2"></asp:TextBox>

<asp:RegularExpressionValidator ID="RegularExpressionValidator5" runat="server" Display="Dynamic"

ErrorMessage="Please, enter valid phone number." ValidationExpression="\d+" ControlToValidate="tb_speeddial">

</asp:RegularExpressionValidator>

</td>

</tr>

<tr>

<td align="right" colspan="2">

<asp:Button ID="btnUpdate" Text='<%# IIf((TypeOf(Container) is GridEditFormInsertItem), "Insert", "Update") %>'

runat="server" CommandName='<%# IIf((TypeOf(Container) is GridEditFormInsertItem), "PerformInsert", "Update")%>' >

</asp:Button>

<asp:Button ID="btnDelete" Text="Delete" runat="server" CausesValidation="False"

CommandName="Delete" OnClientClick="return conformbox();"></asp:Button>

<asp:Button ID="btnCancel" Text="Cancel" runat="server" CausesValidation="False"

CommandName="Cancel"></asp:Button>

</td>

</tr>

</table>

</FormTemplate>

</EditFormSettings>

<PagerStyle PageSizeControlType="RadComboBox" />

</MasterTableView>

<PagerStyle PageSizeControlType="RadComboBox" />

<FilterMenu EnableImageSprites="False">

</FilterMenu>

</telerik:RadGrid>

<asp:LinqDataSource ID="LDS_Company"

runat="server" ContextTypeName="dcLRDBDataContext" EntityTypeName=""

TableName="db_Companies">

</asp:LinqDataSource>

<asp:LinqDataSource ID="LDS_BU"

runat="server" ContextTypeName="dcLRDBDataContext" EntityTypeName=""

TableName="db_Business_units">

</asp:LinqDataSource>

</asp:Content>

Code behind:

Imports System

Imports System.IO

Imports Telerik.Web.UI

Imports System.Web.UI

Imports Telerik.Web.UI.AsyncUpload

Imports System.Runtime.Serialization.Json

Imports System.Web.Services

Imports System.Runtime.Serialization

Imports System.Collections.Generic

Imports System.Drawing

Partial Class Admin_Admin_dictionary_BU

Inherits System.Web.UI.Page

Protected Sub RadGrid_BU_ItemCommand(ByVal source As Object, ByVal e As Telerik.Web.UI.GridCommandEventArgs) Handles RadGrid_BU.ItemCommand

RadGrid_BU.MasterTableView.ClearEditItems()

If e.CommandName = RadGrid.InitInsertCommandName Then 'Click Add New Record button

Dim editColumn As GridEditCommandColumn = CType(RadGrid_BU.MasterTableView.GetColumn("EditCommandColumn"), GridEditCommandColumn)

editColumn.Visible = False

ElseIf (e.CommandName = RadGrid.RebindGridCommandName AndAlso e.Item.OwnerTableView.IsItemInserted) Then

e.Canceled = True

Else

Dim editColumn As GridEditCommandColumn = CType(RadGrid_BU.MasterTableView.GetColumn("EditCommandColumn"), GridEditCommandColumn)

If Not editColumn.Visible Then 'Click Cancel button (both Insert and Update mode)

editColumn.Visible = True

End If

Dim ddlComp_id As RadDropDownList = DirectCast(e.Item.FindControl("rdl_company"), RadDropDownList)

Dim txt_bu_name As TextBox = DirectCast(e.Item.FindControl("tb_bu_name"), TextBox)

Dim txt_shortname As TextBox = DirectCast(e.Item.FindControl("tb_shortname"), TextBox)

Dim txt_address As TextBox = DirectCast(e.Item.FindControl("tb_bu_addr"), TextBox)

Dim txt_tel As TextBox = DirectCast(e.Item.FindControl("tb_tel"), TextBox)

Dim txt_telpre As TextBox = DirectCast(e.Item.FindControl("tb_telpre"), TextBox)

Dim txt_fax As TextBox = DirectCast(e.Item.FindControl("tb_fax"), TextBox)

Dim txt_faxpre As TextBox = DirectCast(e.Item.FindControl("tb_faxpre"), TextBox)

Dim txt_speeddial As TextBox = DirectCast(e.Item.FindControl("tb_speeddial"), TextBox)

Dim dc As New dcLRDBDataContext

If e.CommandName = "PerformInsert" Then

Dim newRecord1 As New db_Business_unit

dc.db_Business_units.InsertOnSubmit(newRecord1)

newRecord1.CompID = ddlComp_id.SelectedValue

newRecord1.BU_Name = txt_bu_name.Text

newRecord1.shortname = txt_shortname.Text

newRecord1.BU_Tel = txt_tel.Text

newRecord1.BU_TelPre = txt_telpre.Text

newRecord1.BU_Fax = txt_fax.Text

newRecord1.BU_FaxPre = txt_faxpre.Text

newRecord1.BU_SpeedDial = txt_speeddial.Text

newRecord1.BU_addr = txt_address.Text

newRecord1.LastUpdateDate = DateTime.Now

newRecord1.LastUpdateBy = HttpContext.Current.Session("UserID")

dc.SubmitChanges()

RadGrid_BU.MasterTableView.ClearEditItems()

RadGrid_BU.DataBind()

ElseIf e.CommandName = "Update" Then

Dim lid As Integer = e.Item.OwnerTableView.DataKeyValues(e.Item.ItemIndex)("BU_ID")

Dim rec = (From p In dc.db_Business_units Where p.BU_ID = lid).FirstOrDefault

If Not rec Is Nothing Then

rec.CompID = ddlComp_id.SelectedValue

rec.BU_Name = txt_bu_name.Text

rec.shortname = txt_shortname.Text

rec.BU_addr = txt_address.Text

rec.BU_Tel = txt_tel.Text

rec.BU_TelPre = txt_telpre.Text

rec.BU_Fax = txt_fax.Text

rec.BU_FaxPre = txt_faxpre.Text

rec.BU_SpeedDial = txt_speeddial.Text

rec.LastUpdateBy = HttpContext.Current.Session("UserID")

rec.LastUpdateDate = DateTime.Now

dc.SubmitChanges()

End If

RadGrid_BU.MasterTableView.ClearEditItems()

RadGrid_BU.DataBind()

ElseIf e.CommandName = "Delete" Then

Dim lid As Integer = e.Item.OwnerTableView.DataKeyValues(e.Item.ItemIndex)("BU_ID")

Dim chk_rec = (From a In dc.db_Countries Where a.BU_ID = lid).Count

If chk_rec > 0 Then

Page.ClientScript.RegisterStartupScript(Page.GetType(), "MessageBox", "alert('Cannot delete because this dictionary had been used.');", True)

Else

Dim rec2 = (From p In dc.db_Business_units Where p.BU_ID = lid).FirstOrDefault

If Not IsNothing(rec2) Then

dc.db_Business_units.DeleteOnSubmit(rec2)

dc.SubmitChanges()

End If

RadGrid_BU.MasterTableView.ClearEditItems()

RadGrid_BU.DataBind()

End If

dc.Dispose()

End If

End Sub

Private Sub RadGrid_BU_ItemDataBound(ByVal sender As Object, ByVal e As Telerik.Web.UI.GridItemEventArgs) Handles RadGrid_BU.ItemDataBound

If (TypeOf e.Item Is GridEditableItem AndAlso e.Item.IsInEditMode) Then

Dim item As GridEditableItem = e.Item

Dim ddl As RadDropDownList = item.FindControl("rdl_company")

ddl.SelectedValue = DataBinder.Eval(e.Item.DataItem, "CompID").ToString

End If

End Sub

End Class

1 Answer, 1 is accepted

answered on 11 Sep 2013, 08:44 AM

DropDownListInEditForm.zip

Hello Joe,

I was unable to replicate the described issue. I had performed some tests locally, following the provided instructions. I am attaching the sample project, I have tested with. Could you give it a try at your end and let me know if I had missed something? In addition, here is a video, demonstrating the behavior at my end.

Regards,
Nencho
Telerik

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RequiredValidator error when bind selected value

1 Answer, 1 is accepted