Question

Since VB6 I rarely use the method DoEvents() in C#.

I need to use the same function now for same purpose

I notice that people use this function (Application.DoEvents Method ):

Application.DoEvents()

but this suits Windows Forms.

Now I’m working with WPF.

Is there a similar method in WPF?

Or maybe I shouldn’t use this method anymore?

Thanks.

Answer 1

Or maybe I shouldn’t use this method anymore?

This.

Basically, the use of Application.DoEvents() is almost always an indication that you’ve got a long-running task which should be executed on a different thread, calling back to the UI thread where UI access is required.

Application.DoEvents() is basically a hack people use when they don’t want to take the time to do things properly – at least in the vast majority of cases.

There are various ways of writing long-running tasks which interact with the UI, depending on which versions of the language/framework you’re using, and what your long-running task consists of. Options to consider:

• Explicitly creating a new thread
• Explicitly using the thread pool
• Using BackgroundWorker
• Using the Task Parallel Library (TPL) – requires .NET 4+
• Using asynchronous APIs, which is much simpler as of .NET 4.5 / C# 5