This BackgroundWorker states that it doesn't report progress/cancellation. Modify WorkerReportsProgress to state that it does report progress.

Error Type1:  This BackgroundWorker states that it doesn't report progress. Modify WorkerReportsProgress to state that it does report progress.

The error occurs when the WorkerReportsProgress of the background worker is not set to true.

This should be set (to True ) from the properties window as shown below screen.

Error Type 2: This BackgroundWorker states that it doesn't support cancellation. Modify WorkerSupportsCancellation to state that it does support cancellation

The error occurs when the WorkerSupportsCancellation of the background worker is not set to true.

This should be set (to True ) from the properties window as shown below screen.