This example shows the client-side events supported by Telerik Upload for ASP.NET MVC.

You can attach an event handler using either of these options:

1. Specifiy the JavaScript event handler name:

   Html.Telerik().Upload()
       .Name("attachments")
       .ClientEvents(events => events
           .OnLoad("onLoad")
       )
           

2. Declare the event handler inline (WebForms syntax):

   <%= Html.Telerik().Upload()
       .Name("attachments")
       .ClientEvents(events => events
          .OnLoad(() => 
          {
           %>
            function(e) {
                // Perform required actions here.
            }
           <%
          }
       )
   %>
           

3. Declare the event handler inline (Razor syntax):

   @(Html.Telerik().Upload()
       .Name("attachments")
       .ClientEvents(events => events
           .OnLoad(
           @<text>
               function(e) {
                   // Perform required actions here.
               }
           </text>)
       )
   )
           

The upload has the following events:

• OnLoad - raised when the component is initialized
• OnSelect - raised when one or more files are selected (cancelable)
• OnUpload - raised when one or more files are about to be uploaded (cancellable)
• OnSuccess - raised when an upload / remove operation has been completed successfully
• OnError - raised when an upload / remove operation has failed
• OnComplete - raised when all active uploads have completed either successfully or with errors
• OnCancel - raised when the upload has been cancelled while in progress
• OnRemove - raised when an uploaded file is about to be removed (cancellable)