troubleshooting Question

user validation on drop down box and input box

Avatar of dipster307
dipster307 asked on
JavaScript.NET ProgrammingASP.NET
1 Comment1 Solution245 ViewsLast Modified:
I am trying to create a user validation on a drop down and input box. Basically I have a input box which must have data entered if the drop down is selected on value "No".

I am using in c#, and javascript.

               <asp:DropDownList CssClass="DropdownListStyle" ID="drpDetails" runat="server">
               <asp:ListItem Value=""></asp:ListItem>
               <asp:ListItem Value="Yes">Yes</asp:ListItem>
               <asp:ListItem Value="No">No</asp:ListItem>

               <asp:TextBox ID="txtNoDataSources" runat="server"></asp:TextBox>

               <asp:CustomValidator ID="CVNoDataSources"
               ValidationGroup="VGPageSummary" Text="Must enter value" runat="server">

    <script type="text/javascript">
        function CVDropDown(sender, args) {
            var drpObj = document.getElementById('drpPayrollDetails').value;
            if ((drpObj == "No") && (args.Value == "")) {
                args.IsValid = false;
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