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When dealing with cross thread data updates, we need to keep track of Dispatcher thread and call the UI updates only through Dispatcher.

The complex calls to Dispatcher had been a nightmare to people as they need to more and more rely on closures to handle program flow and for a new developer it becomes that more difficult to keep track on the sequence on which the program is getting executed.

It’s difficult to lay down any kind of firm guidance.

It’s easy to have a situation where the 4-core 8-GB developer’s machine handles a thousand continuations on the UI thread easily, but that old XP laptop your client has isn’t going to hack it.

As the new API is damn simple, it made the WPF to support it as well.

The first thing that has been introduced to support the async update is the introducion to new method Invoke and Invoke Async to the Dispatcher.

When calling Dispatcher, if you are not using CPU bound calls, you can use Dispatcher.

wpf updating ui asynchronously-41

The proper solution is to use a new thread to do all of the heavy computation and leave the UI thread free to get on with what it is supposed to do - deal with user events.This is extract from MSDN Code Project A simple WPF application which reads 12MB text file, then loops through and returns unique words with count of its occurrences in text file.Instead of using Thread Sleep or Http Client to demonstrate async await, I have word count kind of example. Answer seems obvious that end-user should experience that application doesn’t hang often (for developers POV, a time taking background operation makes it look like hanging).So lets learn building responsive UI using Async Await keywords Visual Studio 2012 introduced a simplified approach, async programming, that leverage asynchronous support in the . The compiler does the difficult work that the developer used to do, and your application retains a logical structure that resembles synchronous code.




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