Home / Community & Support / Developer Productivity Tools Forums / ASP.NET > Upload > RadUpload validation

• John Intermediate

  Posted on May 12, 2011 (permalink)

  Hi

  How can I implement client side validation for RadUpload so user is compelled to provide a file name for upload?

  Thanks

  Regards

• Shinu MVP

  Posted on May 13, 2011 (permalink)

  Hello John,
  
  I achieved same functionality by using CustomValidator control. Here is the sample code.
  aspx:
  

  <telerik:RadUpload ID="RadUpload1" runat="server">

  </telerik:RadUpload>

  <asp:CustomValidator ID="CustomValidator1" runat="server" ClientValidationFunction="ClientValidationFunction1"

          ErrorMessage="CustomValidator">

  </asp:CustomValidator>

  
  Javascript:
  

  function ClientValidationFunction1(source, args)

      {

          args.IsValid = false;

          var upload = $find("<%= RadUpload1.ClientID %>");

          var inputs = upload .getFileInputs();

          for (i = inputs.length - 1; i >= 0; i--)

          {

              if (upload .getFileInputs()[i].value != "")

              {

                  args.IsValid = true;

                  return;

              }

          }

      }

  
  Thanks,
  Shinu.

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