Dispatcher BeginInvoke/EndInvoke

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Dispatcher BeginInvoke/EndInvoke

Michael 41

In .Net Core and the future BeginInvoke/EndInvoke are no longer. A lot is written on this as it applies to threads outside of the dispatcher. What about inside it? I cannot find anything on how it has been effected. Dispatcher.BeginInvoke still works.

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Answer 1

DaisyTian-1203 11,651 Moderator

Dispatcher.BeginInvoke applies to .NET 5.0 and other versions, you can see the applied table in part Applies to at the bottom of the document.

BeginInvoke/EndInvoke delegate calls are not supported in .NET Core.
The APM (using IAsyncResult and BeginInvoke) is no longer the preferred method of making asynchronous calls. And the implementation of async delegates depends on remoting features not present in .NET Core, so BeginInvoke and EndInvoke delegate calls are not supported in .NET Core. You can refer to Microsoft .Net Blog Migrating Delegate.BeginInvoke Calls for .NET Core for more details. If I misunderstand your question, please point out and give me more detailed info to analyze.

Michael 41 Reputation points

2021-03-09T14:03:14.847+00:00

The link under document is exactly what I am looking for. In all my searching I never came up with this page. I always got the page on the deprecated BeginInvoke. Using Bing, I just tried it if I search for Dispatcher BeginInvoke with a space I do not find it in the first couple of pages. If I put a period in place of the space it comes right up in the search results. Considering the way a search engine works it makes sense. I will have to remember this detail in the future.

Years ago when WPF's first came out and the dispatcher along with it I read an article about threading. It talked about how the dispatcher kept threads inside the app. That was using System.Windows.Threading. He talked about using System.Threading and how it was outside the app. I have never seen the analogy used again. I know when I write and use the analogy that is often confuses others. My apologies for using it. No analogy is perfect but I think this one has more truths than falsehoods.

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