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You may also read a simple asynchronous file writer to know where you should concurrent.Investigate concurrent namespace Ultimately, read this e-book: Patterns_of_Parallel_Programming_CSharp This is a simplified version of the most popular answer here by Bijan.An asynchronous request takes the same amount of time to process as a synchronous request.If a request makes a web service call that requires two seconds to complete, the request takes two seconds whether it's performed synchronously or asynchronously.For example, when you make an asynchronous web service request, ASP.NET will not be using any threads between the async method call and the await.This tutorial will teach you the basics of building an asynchronous ASP. NET Framework 4 introduced an asynchronous programming concept referred to as a Task and ASP. Tasks are represented by the Task type and related types in the System. The async keyword represents a hint that you can use to mark methods as task-based asynchronous methods.NET MVC Web application using Visual Studio Express 2012 for Web, which is a free version of Microsoft Visual Studio. A complete sample is provided for this tutorial on github https://github.com/Rick And MSFT/Async-ASP. The combination of await, async, and the Task object makes it much easier for you to write asynchronous code in . The new model for asynchronous methods is called the (TAP).

These are just guidelines; examine each application individually to determine whether asynchronous methods help with performance.

private async void Button Click(object sender, Routed Event Args e) // Running the Task causes this method to be executed in Thread Pool internal void Heavy Method(Text Box /*or any Control or Window*/ txt) //change the value for the following flag to terminate the loop bool still Working = true; //calling this method blocks the calling thread //you must run a task for it internal void Execute Long Procedure(Main Window gui, int param1, int param2, int param3) Accessing collections on non-UI Threads WPF enables you to access and modify data collections on threads other than the one that created the collection.

This enables you to use a background thread to receive data from an external source, such as a database, and display the data on the UI thread.

A WPF window class : This runs, but the WPF function window is still blocked once the worker method starts.

I need to know how to arrange the async/await/task declarations to allow A) the worker method to not block the gui window B) let the worker method update the gui window C) allow the gui window to stop interrupt and stop the worker method Any help or pointers are much appreciated.

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