hi all ,

i add one radio buton in Gridview , i want to select selected radio item.

and if dont have any selected item ,i  want alert (please select one item)..

how can i do that ?

thx.

<asp:TemplateField HeaderText="Total">

<input type="radio" id="id_<%#Eval("Total")%>" name="total" value="<%#Eval("Total")%>" /><%#Eval("Total")%>USD

</ItemTemplate>

</asp:TemplateField>

You could use validation controls i think that would be easiest or write some javascript, I would go with the .net validation.

heres an example 

<asp:RadioButtonList ID="RadioButtonList1" runat="server">

</asp:RadioButtonList>

<asp:ValidationSummary ID="ValidationSummary1" runat="server" ShowMessageBox="True"

Visible="False" />

<asp:RequiredFieldValidator ID="RequiredFieldValidator1" Text="*" ErrorMessage="Pleae Select One.." runat="server" ControlToValidate="RadioButtonList1"

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

 Call this javascript function on some postback like .....save button onClientClick="return SelectOne()"

<script type="text/javascript" language="javascript">
    function SelectOne()
    {
  
      var flag=false;
      var inputTags= window.document.getElementsByTagName('input');
      for(var i=0;i<inputTags.length;i++)
      {
          if(inputTags[i].type=='radio')
          {
             if(inputTags[i].checked)
              flag=true;
          }
      }
      if(!flag)
      {
        alert('Please select a item');
        return false;
      }
      return true;
    }
   
    </script>