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Vlad asked on 13 Sep 2011, 03:05 PM

I am modifying this example to use in my project:
http://demos.telerik.com/aspnet-ajax/grid/examples/dataediting/templateformupdate/defaultcs.aspx

how can I preload "Title Of Courtesy" combobox from code behind at all and also
considering the fact that in my case it is a web user control ? Actually in my case user control is a grid wrapped in user control
but I did DataSource and DataBind interface for it, so it works like a regular bindable control in that respect ).

The values in my user control are different depending on EmployeeId and that is why I need to bind it based on row.

What I am looking to do is something like:
UserControl.DataSource=Business.Employees.GetContactInfoAsList(EpmployeeId)

but having trouble figuring out which event to use to get a hold of usercontrol on add new row click, also for existing records
I am trying to use RadGrid1_DataBound but item.FindControl (UserControlId) returns NULL when
I do foreach on grid items.

Thank you.

7 Answers, 1 is accepted

answered on 14 Sep 2011, 02:20 PM

ok I got it working. So to load some bindable list control(builtin or user control) located in Form template

with values from business object in code behind when "Add New record" is clicked 

(in the telerik example  above) :









protected void RadGrid1_ItemDataBound(object sender, GridItemEventArgs e)

{

if (e.Item is GridEditFormItem && e.Item.IsInEditMode)

{

GridEditFormItem editForm = e.Item as GridEditFormItem;

RadListBox list = editForm.FindControl("listBoxIndustries") as RadListBox;

list.DataSource = BusinessService.LoadIndustriesLookupList();

list.DataBind();

}

answered on 03 Jun 2013, 05:02 PM

I use the demo http://demos.telerik.com/aspnet-ajax/grid/examples/dataediting/templateformupdate/defaultvb.aspx?#qsf-demo-source.
My

<tr>

<b>User Details</b>

</td>

<td>

 </td>

</tr>

<tr>

Network Name:

</td>

<asp:TextBox ID="TxtNetworkName" runat="server" Text='<%# Bind("NetworkName") %>' TabIndex="1">

</asp:TextBox>

</td>

</tr>

<tr>

First Name:

</td>

<asp:TextBox ID="TxtFirstName" runat="server" Text='<%# Bind("FirstName") %>' TabIndex="2" >

</asp:TextBox>

</td>

</tr>

<tr>

Last Name:

</td>

<asp:TextBox ID="TxtLastName" runat="server" Text='<%# Bind("LastName") %>' TabIndex="3">

</asp:TextBox>

</td>

</tr>

<tr>

Phone:

</td>

<telerik:RadMaskedTextBox ID="TxtPhone"

runat="server" SelectionOnFocus="SelectAll"

Text='<%# Bind("Phone") %>' PromptChar="_"

Width="120px" Mask="(###) ###-####"

TabIndex="4" LabelWidth="">

</telerik:RadMaskedTextBox>

</td>

</tr>

<tr>

Email:

</td>

<asp:TextBox ID="TxtEmail" Text='<%# Bind("Email") %>'

runat="server" Width="180px"></asp:TextBox>

<asp:RegularExpressionValidator ID="emailValidator"

runat="server" Display="Dynamic"

ErrorMessage="Please, enter valid e-mail address." ValidationExpression="^\s*(([a-zA-Z0-9_\-\.]+)@([a-zA-Z0-9_\-\.]+)\.([a-zA-Z]{2,5}){1,25})+([;.](([a-zA-Z0-9_\-\.]+)@([a-zA-Z0-9_\-\.]+)\.([a-zA-Z]{2,5}){1,25})+)*\s*$"

ControlToValidate="TxtEmail" TabIndex="5" ForeColor="Red"></asp:RegularExpressionValidator>

</td>

</tr>

<tr>

Active:

</td>

<asp:CheckBox ID="chkUserActive" runat="server" Text='<%# Bind("UserActive") %>' TabIndex="6" />

</td>

</tr>

<tr>

User Group:

</td>

<asp:DropDownList ID="ddlUsergroup" runat="server" SelectedValue='<%# Bind("Usergroup") %>'

DataSource='<%# (New string() { "AdminUser", "MainUser", "ReadonlyUser"}) %>' TabIndex="7"

AppendDataBoundItems="True">

<asp:ListItem Selected="True" Text="Select" Value=""></asp:ListItem>

</asp:DropDownList>

</td>

</tr>

<tr>

 </td>

<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="btnCancel" Text="Cancel" runat="server" CausesValidation="False"

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

</td>

</tr>

</table>

</FormTemplate>

</EditFormSettings>

and in my VB page, I use the
Protected Sub RadGrid1_PreRender(ByVal sender As Object, ByVal e As System.EventArgs) Handles RadGrid1.PreRender
        If (Not Page.IsPostBack) Then
           RadGrid1.EditIndexes.Add(0)
           RadGrid1.Rebind()
        End If

End Sub

But I got error when I run it

'ddlUsergroup' has a SelectedValue which is invalid because it does not exist in the list of items.
Parameter name: value

Please help

answered on 05 Jun 2013, 04:24 AM

Hi,

I'm sorry i couldn't replicate the issue,the references are same as that in the example.
to add a checkbox,you can directly drag and drop a checkbox into the form template,where you want it.
For further reference,I'm attaching my full code where i tried. You can use the same code behind from the demo.
ASPX:

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="EditFormTemplate.aspx.cs"

Inherits="Radgrid2_EditFormTemplate" %>

<%@ Register Assembly="Telerik.Web.UI" Namespace="Telerik.Web.UI" TagPrefix="telerik" %>

<!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></title>

</head>

<body>

<form id="form1" runat="server">

<div>

<asp:Label ID="Label1" runat="server" EnableViewState="False" Font-Bold="True" ForeColor="#FF8080">

</asp:Label>

<asp:Label ID="Label2" runat="server" EnableViewState="False" Font-Bold="True" ForeColor="#00C000">

</asp:Label>

<asp:ScriptManager ID="ScriptManager1" runat="server">

</asp:ScriptManager>

<telerik:RadGrid ID="RadGrid1" runat="server" CssClass="RadGrid" GridLines="None"

AllowPaging="True" PageSize="20" AllowSorting="True" AutoGenerateColumns="False"

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

AllowAutomaticUpdates="True" DataSourceID="SqlDataSource1" OnItemDeleted="RadGrid1_ItemDeleted"

OnItemInserted="RadGrid1_ItemInserted" OnItemUpdated="RadGrid1_ItemUpdated" OnItemCommand="RadGrid1_ItemCommand"

OnPreRender="RadGrid1_PreRender">

<MasterTableView CommandItemDisplay="TopAndBottom" DataSourceID="SqlDataSource1"

DataKeyNames="EmployeeID">

<Columns>

<telerik:GridEditCommandColumn>

</telerik:GridEditCommandColumn>

<telerik:GridBoundColumn UniqueName="EmployeeID" HeaderText="ID" DataField="EmployeeID">

<HeaderStyle ForeColor="Silver" Width="20px"></HeaderStyle>

<ItemStyle ForeColor="Gray"></ItemStyle>

</telerik:GridBoundColumn>

<telerik:GridBoundColumn UniqueName="TitleOfCourtesy" HeaderText="TOC" DataField="TitleOfCourtesy">

<HeaderStyle Width="60px"></HeaderStyle>

</telerik:GridBoundColumn>

<telerik:GridBoundColumn UniqueName="FirstName" HeaderText="FirstName" DataField="FirstName">

</telerik:GridBoundColumn>

<telerik:GridBoundColumn UniqueName="LastName" HeaderText="LastName" DataField="LastName">

</telerik:GridBoundColumn>

<telerik:GridBoundColumn UniqueName="HireDate" HeaderText="Hire Date" DataField="HireDate"

DataFormatString="{0:d}">

</telerik:GridBoundColumn>

<telerik:GridBoundColumn UniqueName="Title" HeaderText="Title" DataField="Title">

</telerik:GridBoundColumn>

<telerik:GridButtonColumn CommandName="Delete" Text="Delete" UniqueName="column">

</telerik:GridButtonColumn>

</Columns>

<EditFormSettings EditFormType="Template">

<FormTemplate>

<table id="Table2" cellspacing="2" cellpadding="1" width="100%" border="0" rules="none"

style="border-collapse: collapse;">

<tr class="EditFormHeader">

<td colspan="2" style="font-size: small">

<b>Employee Details</b>

</td>

</tr>

<tr>

<td colspan="2">

<b>Company Info:</b>

</td>

</tr>

<tr>

<td>

<table id="Table3" cellspacing="1" cellpadding="1" width="250" border="0" class="module">

<tr>

<td>

</td>

<td>

</td>

</tr>

<tr>

<td>

Country:

</td>

<td>

<asp:TextBox ID="TextBox7" runat="server" Text='<%# Bind("Country") %>'>

</asp:TextBox>

</td>

</tr>

<tr>

<td>

City:

</td>

<td>

<asp:TextBox ID="TextBox8" runat="server" Text='<%# Bind("City") %>' TabIndex="1">

</asp:TextBox>

</td>

</tr>

<tr>

<td>

Region:

</td>

<td>

<asp:TextBox ID="TextBox9" runat="server" Text='<%# Bind("Region") %>' TabIndex="2">

</asp:TextBox>

</td>

</tr>

<tr>

<td>

Home Phone:

</td>

<td>

<telerik:RadMaskedTextBox ID="HomePhoneBox" runat="server" SelectionOnFocus="SelectAll"

Text='<%# Bind("HomePhone") %>' PromptChar="_" Width="300px" Mask="(###) ###-####"

TabIndex="3">

</telerik:RadMaskedTextBox>

</td>

</tr>

<tr>

<td>

Birth Date:

</td>

<td>

<telerik:RadDatePicker ID="BirthDatePicker" runat="server" MinDate="1/1/1900" DbSelectedDate='<%# Bind("BirthDate") %>'

TabIndex="4">

</telerik:RadDatePicker>

</td>

</tr>

<tr>

<td>

Title Of Courtesy

</td>

<td>

<asp:DropDownList ID="ddlTOC" runat="server" SelectedValue='<%# Bind("TitleOfCourtesy") %>'

DataSource='<%# (new string[] { "Dr.", "Mr.", "Mrs.", "Ms." }) %>' TabIndex="7"

AppendDataBoundItems="True">

<asp:ListItem Selected="True" Text="Select" Value="">

</asp:ListItem>

</asp:DropDownList>

</td>

</tr>

</table>

</td>

<td>

<table id="Table1" cellspacing="1" cellpadding="1" width="250" border="0" class="module">

<tr>

<td>

Notes:

</td>

</tr>

<tr>

<td>

<asp:TextBox ID="TextBox1" Text='<%# Bind("Notes") %>' runat="server" TextMode="MultiLine"

Rows="5" Columns="40" TabIndex="5">

</asp:TextBox>

</td>

</tr>

<tr>

<td>

Address:

</td>

</tr>

<tr>

<td>

<asp:TextBox ID="TextBox6" Text='<%# Bind("Address") %>' runat="server" TextMode="MultiLine"

Rows="2" Columns="40" TabIndex="6">

</asp:TextBox>

</td>

</tr>

</table>

</td>

</tr>

<tr>

<td colspan="2">

<b>Personal Info:</b>

</td>

</tr>

<tr>

<td>

<table id="Table4" cellspacing="1" cellpadding="1" width="250" border="0" class="module">

<tr>

<td>

FirstName:

</td>

<td>

<asp:TextBox ID="TextBox2" Text='<%# Bind( "FirstName") %>' runat="server" TabIndex="8">

</asp:TextBox>

</td>

</tr>

<tr>

<td>

Last Name:

</td>

<td>

<asp:TextBox ID="TextBox3" Text='<%# Bind( "LastName") %>' runat="server" TabIndex="9">

</asp:TextBox>

</td>

</tr>

<tr>

<td>

Hire Date:

</td>

<td>

<telerik:RadDatePicker ID="HireDatePicker" DbSelectedDate='<%# Bind( "HireDate") %>'

runat="server" TabIndex="10">

</telerik:RadDatePicker>

</td>

</tr>

<tr>

<td>

Title:

</td>

<td>

<asp:TextBox ID="TextBox4" Text='<%# Bind( "Title") %>' runat="server" TabIndex="11">

</asp:TextBox>

</td>

</tr>

<tr>

<td>Check:</td>

<td>

<asp:CheckBox ID="CheckBox1" runat="server" />

</td>

</tr>

</table>

</td>

<td>

</td>

</tr>

<tr>

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

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

runat="server" CommandName='<%# (Container is GridEditFormInsertItem) ? "PerformInsert" : "Update" %>'>

</asp:Button>

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

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

</td>

</tr>

</table>

</FormTemplate>

</EditFormSettings>

</MasterTableView>

<ClientSettings>

<ClientEvents OnRowDblClick="RowDblClick"></ClientEvents>

</ClientSettings>

</telerik:RadGrid>

<asp:SqlDataSource ID="SqlDataSource1" runat="server" ConnectionString="<%$ ConnectionStrings:Northwind_newConnectionString3 %>"

DeleteCommand="DELETE FROM [Employees] WHERE [EmployeeID] = @EmployeeID"

InsertCommand="INSERT INTO [Employees] ([LastName], [FirstName], [Title], [TitleOfCourtesy], [BirthDate], [HireDate], [Address], [City], [Region], [Country], [HomePhone], [Notes], [ReportsTo]) VALUES (@LastName, @FirstName, @Title, @TitleOfCourtesy, @BirthDate, @HireDate, @Address, @City, @Region, @Country, @HomePhone, @Notes, @ReportsTo)"

SelectCommand="SELECT * FROM [Employees]" UpdateCommand="UPDATE [Employees] SET [LastName] = @LastName, [FirstName] = @FirstName, [Title] = @Title, [TitleOfCourtesy] = @TitleOfCourtesy, [BirthDate] = @BirthDate, [HireDate] = @HireDate, [Address] = @Address, [City] = @City, [Region] = @Region, [Country] = @Country, [HomePhone] = @HomePhone, [Notes] = @Notes WHERE [EmployeeID] = @EmployeeID">

<DeleteParameters>

<asp:Parameter Name="EmployeeID" Type="Int32"></asp:Parameter>

</DeleteParameters>

<InsertParameters>

<asp:Parameter Name="LastName" Type="String"></asp:Parameter>

<asp:Parameter Name="FirstName" Type="String"></asp:Parameter>

<asp:Parameter Name="Title" Type="String"></asp:Parameter>

<asp:Parameter Name="TitleOfCourtesy" Type="String"></asp:Parameter>

<asp:Parameter Name="BirthDate" Type="DateTime"></asp:Parameter>

<asp:Parameter Name="HireDate" Type="DateTime"></asp:Parameter>

<asp:Parameter Name="Address" Type="String"></asp:Parameter>

<asp:Parameter Name="City" Type="String"></asp:Parameter>

<asp:Parameter Name="Region" Type="String"></asp:Parameter>

<asp:Parameter Name="Country" Type="String"></asp:Parameter>

<asp:Parameter Name="HomePhone" Type="String"></asp:Parameter>

<asp:Parameter Name="Notes" Type="String"></asp:Parameter>

<asp:Parameter Name="ReportsTo" Type="Int32" DefaultValue=""></asp:Parameter>

</InsertParameters>

<UpdateParameters>