<ItemTemplate>
<asp:Button ID="LinkButton1" runat="server" BorderColor="White" BorderStyle="none" CausesValidation="false" CommandArgument='<%# Eval("CLI") %>' CommandName="delete" Text ="Delete" OnClientClick='<%# String.Format("javascript:DeleteCli(""{0}"");", Eval("CLI"))%>'/>
</ItemTemplate>
function DeleteCli(id)
{
var dlt = confirm("Are you sure want to delete this number?"+ id,null,"status=yes,resizable=no,left=350,top=250,width=350,height=250");
}
this is my code