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DropDown List Validation

Posted by  Ankita Pandey
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I need to perform a validation to check whether a TextBox value is empty on Dropown list selected Index change using validation controls in

  1. Re: DropDown List Validation

    Hi Ankita, 

    I hope this will work fine.

        <asp:TextBox ID="TextBox1" runat="server"></asp:TextBox>
        <asp:DropDownList ID="DropDownList1" runat="server" CausesValidation="true" AutoPostBack="true">
    <asp:RequiredFieldValidator ID="RequiredFieldValidator1" ControlToValidate="TextBox1" runat="server" ErrorMessage="Please Enter the Value"></asp:RequiredFieldValidator>

      Modified On Apr-04-2018 06:37:11 AM