Initialization stage. Upload process does not yet started. On this stage you can define a specific environment for Upload object.

Uploading stage. POST request with files is processed by EAUpload component. On this stage you can change environment settins, get a status information of the upload, get an access to processed form fields.

Complete stage. Upload was processed successfully. All files were uploaded and available for management.

Failed stage. It means that the exception occurs during upload process. Upload was processed unsuccessfully.

The upload was canceled. It means that the Upload..::.CancelUpload(Boolean) method is called by your application or user cancels request from a browser.