RequiredFieldValidator Not Working Programmatically?

Feb 21, 2011

As the title says. What could be amiss?

I have a regular TextBox on my page - <asp:TextBox ID="tb" runat="server" />

The following works:

<asp:RequiredFieldValidator ID="r" runat="server" ControlToValidate="tb" ErrorMessage="error" />

The following does not work:

RequiredFieldValidator rfv = new RequiredFieldValidator();
rfv.ID = "rfv";
rfv.ControlToValidate = tb.ID;
rfv.ErrorMessage = "error";

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