System 2.0.0.0 4.0.0.0 System.ComponentModel.AsyncCompletedEventArgs Instances of this class are passed to the .

Provides data for the event.

Property 2.0.0.0 4.0.0.0 System.Byte[] To be added. You should check the and properties to determine whether the upload completed. If the property's value is an object or the property's value is true, the asynchronous operation did not complete correctly and the property's value will not be valid.

Gets the server reply to a data upload operation started by calling an method.