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From MSDN, it seems that Application.DoEvents() is available in Windows.Forms. What would be the equivalent thing in WPF.
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Application. DoEvents() can be used to process the messages waiting in the queue on the UI thread when performing a long-running task in the UI thread. This has the benefit of making the UI seem more responsive and not "locked up" while a long task is running.
Application. DoEvents method has the same behavior as the DoEvents method. When you run a Windows Forms application, it creates a new form, which then waits for events to be handled. Each time the form handles an event, such as a button click, it processes all the code associated with that event.
You shouldn't be using it even in Windows Forms. Don't perform long-running tasks on the UI thread - use a background thread and use the Dispatcher to update the UI as required. Any use of Application.DoEvents is basically a code smell. I don't know whether there is an equivalent in WPF, but you should try to avoid it even if there is.
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While i agree with the Skeet you can find a WPF method like that on the documentation page of the DispatcherFrame
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