Validating radio button list

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Hi
I want to validate radio button list by giving message(pls choose any one)if i am not choose any values.

How can i done this?

can any one give example?

Posted 9-Dec-11 2:22am

Thendral.N

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S V Saichandra · Answer 1 · 2011-12-09T03:15:00

Try this code:

XML

<asp:RadioButtonList ID="RadioButtonList1" runat="server" AutoPostBack="True">
    <asp:ListItem>One</asp:ListItem>
    <asp:ListItem>Two</asp:ListItem>
    <asp:ListItem>Three</asp:ListItem>
    </asp:RadioButtonList>
    <asp:RequiredFieldValidator ID="RequiredFieldValidator1" runat="server"
        ErrorMessage="Please Choose any value from the list"
        ControlToValidate="RadioButtonList1">*</asp:RequiredFieldValidator>
    <asp:Button ID="Button1" runat="server" Text="Button" />
    <br />
    <asp:ValidationSummary ID="ValidationSummary1" runat="server" />

Eduard Lu · Answer 2 · 2011-12-09T04:19:00

Haven't tried using RequiredFieldValidator on RadioButtonList as what Solution1 stated, but for a single TextBox validation, I am sure that will do it. So, I will show you the server-side validation for that:

C#

foreach(ListItem item in RadioButtonList1.Items)
{
   if(item.Selected == false)
   {
      lblValidator.Text = "Please choose an item!";
   }
}

Regards,
Eduard

Validating radio button list

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