Thanks for the reply, Brian.

While you were right in pointing that out, that oversight unfortunately didn't solve my problem...

Wierd thing is, I've got a date textbox with a maskededitextender/validator and calendarextender attached to it and that works just fine. [8-)]

I just "modeled" the ssn textbox after the date textbox, figuring if the one worked, then the other should. But noooo!

Here's the code for both:

<asp:TemplateField HeaderText="Hire Date">
	<InsertItemTemplate>


		<ajaxToolkit:MaskedEditExtender
 ID="editExtHireDate"
 runat="server"
 TargetControlID="txtHireDate"
 Mask="99/99/9999"
          MaskType="Date"
          MessageValidatorTip="True"
 OnFocusCssClass="MaskedEditFocus"
 OnInvalidCssClass="MaskedEditError"
 ErrorTooltipEnabled="True" />
		 

		<ajaxToolkit:MaskedEditValidator
 ID="editValidatorHireDate"
 runat="server"
 ControlExtender="editExtHireDate"
 ControlToValidate="txtHireDate"
 IsValidEmpty="True"
 InvalidValueMessage="Date is invalid. Select a date from the calendar or enter the format mm\dd\yyyy."
 Display="Dynamic"
 InvalidValueBlurredMessage="*"
 ValidationGroup="valHireDate"
          ValidationExpression="(0[1-9]|1[012])[- /.](0[1-9]|[12][0-9]|3[01])[- /.](19|20)\d\d" />
		 

		<ajaxToolkit:CalendarExtender
 ID="calExtHireDate"
 runat="server"
 Enabled="True"
 TargetControlID="txtHireDate"
 Format="MM/dd/yyyy">
		</ajaxToolkit:CalendarExtender>
		

		<asp:TextBox
 ID="txtHireDate"
 runat="server"
 Text='<%# Bind("HireDate") %>'
 Width="160px"
 Font-Size="10px"
 ValidationGroup="valHireDate" />
		 

	</InsertItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="SSN">
	<InsertItemTemplate>
	

		<ajaxToolkit:MaskedEditExtender
 ID="editExtSSN"
 runat="server"
 TargetControlID="txtInsSSN"
 Mask="999-99-9999"
 MaskType="None"
 MessageValidatorTip="True"
 OnFocusCssClass="MaskedEditFocus"
 OnInvalidCssClass="MaskedEditError"
 ErrorTooltipEnabled="True" />
		 

		<ajaxToolkit:MaskedEditValidator
 ID="editValidatorSSN"
 runat="server"
 ControlExtender="editExtSSN"
 ControlToValidate="txtInsSSN"
 IsValidEmpty="True"
 InvalidValueMessage="Entry is invalid."
 Display="Dynamic"
 InvalidValueBlurredMessage="*"
 ValidationGroup="valSSN"
 ValidationExpression="(\d{3})[--.](\d{2})[--.](\d{4})" />
		 

		<asp:TextBox
 ID="txtInsSSN"
 runat="server"
 Width="160px"
 Font-Size="10px"
 ValidationGroup="valSSN" />


	</InsertItemTemplate>
</asp:TemplateField>

  Aside from the SSN textbox not being validated right, it also isn't keeping the dashes after the textbox loses focus. But the dashes return upon gaining focus again. I'm stumped...

HELP! [:O]