What’s the different between an async delegate and async method?
Someone told me they were different in C#, but I thought they were the same thing.
What’s the different between an async delegate and async method? Someone told me they
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What’s the different between an async delegate and async method?
Someone told me they were different in C#, but I thought they were the same thing.
Delegates first. When you declare one, the compiler automatically generates three methods for the delegate type:
The Invoke() method calls the delegate target synchronously, just like a plain call. The BeginInvoke() method is the asynchronous call, the target method runs on a thread-pool thread. The EndInvoke() call is required after the method completes to release resources allocated for the call and to re-raise any exception that might have aborted the call.
The .NET framework contains many classes that have a BeginXxxx() method. The MSDN Library refers to them as asynchronous operations, not asynchronous methods. They start an operation that completes asynchronously.
Starting with .NET 4.5 and supported by C# version 5, the asynchronous operations whose name end in Async and return a Task can be called in an await expression. When used in a method that has the async modifier. This greatly simplifies dealing with asynchronous operations, important in WinRT where many common operations are asynchronous.