Home > Javascript > Validate CheckBoxList

Validate CheckBoxList


Try this example:

<script type="text/javascript">
   
    //-- To Validate CheckBoxList
    function ChequarSelecciondeTipoModificacion(source, args)
            {
               var chkListaTipoModificaciones= document.getElementById ('<%= CheckBoxList1.ClientID %>');
               var chkLista= chkListaTipoModificaciones.getElementsByTagName("input");
               for(var i=0;i<chkLista.length;i++)
                {  
                    if(chkLista[i].checked)
                    {
                        args.IsValid = true;
                        return;
                    }
                }
              args.IsValid = false;
            } 
    </script>
<asp:CheckBoxList ID="CheckBoxList1" runat="server" >
                </asp:CheckBoxList>
                <asp:CustomValidator ID="CustomValidator1" runat="server" ErrorMessage="<img src='images/alert.gif' style='width:15px;height:15px;'>" ClientValidationFunction="ChequarSelecciondeTipoModificacion"></asp:CustomValidator>

       
Good Luck

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Categories: Javascript
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