Here is my code
Markup
<EditFormSettings EditFormType="Template">
<FormTemplate>
<table id="tblEmployeeDetails" style="width:100%">
<tr class="EditFormHeader">
<td colspan="2">
<b>EMPLOYEE DETAILS</b>
</td>
</tr>
<tr>
<td class="labelHeader">Manager Full Name:</td>
<td>
<telerik:RadComboBox RenderMode="Lightweight" ID="rcbManageFullNameEdit" DataSourceID="SQL_Employees"
DataTextField="FULLNAME" DataValueField="IDNUM" Width="200px" AppendDataBoundItems="true"
SelectedValue='<%#Eval("MANAGER_IDNUM")%>' runat="server" OnItemCreated="rcbManageFullNameEdit_itemCreated">
<Items>
<telerik:RadComboBoxItem Text="-- CHOOSE --" Value ="0" />
</Items>
</telerik:RadComboBox>
</td>
</tr>
</table>
</FormTemplate>
</EditFormSettings>
VB.Net Code
Protected Sub rcbManageFullNameEdit_itemCreated(ByVal sender As Object, ByVal e As RadComboBoxItemEventArgs)
Dim item As RadComboBoxItem = e.Item
Dim x = item.Value
Dim dt1 As DataTable = New DataTable
dt1 = DAL.spHR_GetManagerList()
Dim dv1 As DataView = dt1.DefaultView
For Each row1 As DataRowView In dv1
If item.Value = row1!IDNUM Then
item.CssClass = "manager"
End If
Next
End Sub
My item.Value is always empty.