Question

I need to use asp:CustomValidator for a tool. The problem am facing is that on calling a function using the property ‘ClientValidationFunction’, the function is getting called but even a single line of javascript is not getting executed. I placed a simple alert() inside the function. Its also not executed.

Can any one please suggest a solution for this?
Thanks in advance

Answer 1

See the CustomValidator below:

     <asp:CustomValidator ID="valCustmCheckDate" runat="server" ErrorMessage="The date   difference should not be greater than 100 days" ForeColor="Red" ValidationGroup="LoginUserAdd" ClientValidationFunction="CompareStartAndEndDate"></asp:CustomValidator>  

It calls the following Javascript function below:

   function CompareStartAndEndDate(sender,args) {

    var txtBox = document.getElementById('<%=txtBoxID.ClientID %>');

    var validation=//do your validation of txtBox.value here;

   if (!validation) {

        args.IsValid = false; //this will display your validation error msg and stops at clent side itself
    }
    else {
         args.IsValid = true;// this will allow server side run
    }

Hope this helps..
}