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Help with User Control

I'm creating a User Control. I have attached the ascx and ascx.vb. I have also attached the aspx and aspx.vb for the page where I am using the control. Also attached an error message I get when I run. Question - why the error, why can it not find my txtFirstName control?
ascx.png
ascx.vb.png
aspx.png
aspx.vb.png
error.png

Nasir Razzaq

Its because the textbox is in a table and will be repeated for each row so it is not unique. For controls that inside repeating controls like gridview items, repeater, tables etc, you can not reference these directly.

HLRosenberger

ASKER

ah, got it!

HLRosenberger

ASKER

I removed the table. That did not help., I also added ClientIDMode="Static" to the txtFirstName control. Still no luck,.

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Nasir Razzaq

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HLRosenberger

ASKER

There must be a way.

HLRosenberger

ASKER

You were correct. I change the code to dynamically add the controls to the Page.Form

Private rnd As New Random(DateTime.Now.Millisecond)

Public Sub AddControl(ControlToValidate As String, ErrorMessage As String)

Dim req As New RequiredFieldValidator
Dim ext As New ValidatorCalloutExtender

req.ControlToValidate = ControlToValidate
req.ErrorMessage = ErrorMessage
req.Display = ValidatorDisplay.None
req.ID = "req" & Rnd.Next

ext.TargetControlID = req.ID
ext.ID = "ext" & rnd.Next

Page.Form.Controls.Add(req)
Page.Form.Controls.Add(ext)

End Sub