I have "moved" (copied) my VS 2005 project (.NET 2.0) to VS 2012. Now (in VS 2012) under .NET 4.0 the validation does not work. Strange is that I created a test aspx page with the same validation as in one of the application pages; and the validation works in the test page. But not in one of the pages of the application. So there must be something different.
How do you troubleshoot the validation? Where in the debugger (if this is where I should look) I can see the validation?
This is the segment of code of my validation:
<asp:textbox id="RequestorPhone" CssClass="FieldRW" MaxLength="14" Runat="server"></asp:textbox>
<asp:requiredfieldvalidator id="rfvRequestorPhone" runat="server" CssClass="FieldLabel" ControlToValidate="RequestorPhone"
ErrorMessage="RequiredFieldValidator" Enabled="True"> Please enter your telephone</asp:requiredfieldvalidator>
<asp:button id="Submit" Runat="server" Text="Submit" ></asp:button>
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