How best execute query in background to not freeze application (.NET)

Question

My WinForm apps needs to execute complex query with significant execution time, I have no influence (about 10mins) When query is executing user sees \'application not respon

Answer 1

The simplest approach here would be to do that work from a BackgroundWorker. MSDN has examples for this. This then executes on a worker thread, with events for completion/error/etc. It can also support cancel, but your operation needs to be coded to be interruptable.

Another approach is the Task API in 4.0; but if you use this you'll need to get back to the UI thread (afterwards) yourself. With BackgroundWorker this is automatic (the events are raised on the UI thread).