Calling Methods Asynchronously, revision

When you get to the article on MSDN, Calling Synchronous Methods Asynchronously, you might want to start to try out the code in a single program. There is somehow tricky in this article that you will see 4 main functions instead of one.

One main function for Waiting for an Asynchronous Call with EndInvoke, another main function for Waiting for an Asynchronous Call with WaitHandle, and the third main function is for Polling for Asynchronous Call Completion and the last main function for Executing a Callback Method When an Asynchronous Call Completes.

So indeed the reader can create 4 Console Projects out of this article. I have created these programs and uploaded to Do download the programs and feedback if you detect any mistake.

Download the complete code from The sample file names are “ConAppAsync.rar”, “ConAppAsyncWaitHanle.rar”, “ConAppAsyncCallComplete.rar” and “ConAppAsyncCallback.rar”. My MSN ID is

About chanmingman

Since March 2011 Microsoft Live Spaces migrated to Wordpress ( till now, I have is over 1 million viewers. This blog is about more than 50% telling you how to resolve error messages, especial for Microsoft products. The blog also has a lot of guidance teaching you how to get stated certain Microsoft technologies. The blog also uses as a help to keep my memory. The blog is never meant to give people consulting services or silver bullet solutions. It is a contribution to the community. Thanks for your support over the years. Ming Man is Microsoft MVP since year 2006. He is a software development manager for a multinational company. With 25 years of experience in the IT field, he has developed system using Clipper, COBOL, VB5, VB6, VB.NET, Java and C #. He has been using Visual Studio (.NET) since the Beta back in year 2000. He and the team have developed many projects using .NET platform such as SCM, and HR based applications. He is familiar with the N-Tier design of business application and is also an expert with database experience in MS SQL, Oracle and AS 400.
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