ASP.NET validators on Telerik textboxes

[Andy]

I've added an ASP.NET required validator on a Telerik textbox.  I've noticed that the validator reports the contents of the textbox to be empty when the screen is first rendered, even though the textbox was prepopulated with text from a database.  Refreshing the screen seems to make the validator recognize the text again.

I know telerik textboxes render as three input controls.  Could the validator be trying to read the wrong input control?

<!-- FULL NAME -->
<div class="FixedBlockCtrl" style="top:10px;left:60px;">
    <asp:Label ID="lblFullNameB" cssclass="standardLabel" runat="server"
        Text="Name *" ></asp:Label>
</div>
<div class="FixedBlockCtrl" style="top:10px;left:100px;">
<telerik:RadTextBox ID="txtFullNameB" Label=""
        cssclass="standardTextbox"   runat="server"
        Width="200px" >
</telerik:RadTextBox>
<asp:RequiredFieldValidator ID="reqFullNameB" runat="server" EnableClientScript="False" ControlToValidate="txtFullNameB"
ToolTip="First and last names required" Display="Dynamic" Text="*"
ErrorMessage="Enter the first and last names of the coordinator" Enabled="true" ></asp:RequiredFieldValidator>
</div>
<!-- EOF FIRST NAME -->

[Iana Tsolova]

Hello Andy,

I added the provided code to a runnable sample, however the validator is not fired when the RadTextBox has Text initially. Can you check it out and let me know how it works on your end and if I missed something out?

Greetings,
Iana
the Telerik team