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Topic: How to do DropdownList validation using RequiredField Validator in ASP.NET

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User: rajiv100 Post Date: 20 Jan 2012 00:31

Introduction:
How to do DropdownList validation using RequiredField Validator in ASP.NET



Main Content:
<asp:RequiredFieldValidator  ID="sampleValidator" runat="server" ControlToValidate="SampleDropDownList" InitialValue="Select Value"

ErrorMessage="Select option"></asp:RequiredFieldValidator>

Here InitialValue="Select Value" is important.

"Select Value" has to be the value and Text of your dropdown list first item.

Conclusion:
This way we can do DropdownList validation using RequiredField Validator in ASP.NET



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