AsyncFileUpload postback causes double upload

Question

I implemented the AsyncFileUpload control on a web page. This web page requires uploaded files to appear in a GridView.
The GridView

Answer 1

AsyncFileUpload has a property that named IsUploading. when this property is set to false, a postback will happen. you can check this property like this:

if(AsyncFileUpload1.IsUploading)
 {
  ..... upload codes
 }