What Is Asynccallback C

The AsyncCallback delegate represents a callback method that is called when the asynchronous operation completes. The callback method takes an IAsyncResult parameter, which is subsequently used to obtain the results of the asynchronous operation.

What is IAsyncResult C#?

Remarks. The IAsyncResult interface is implemented by classes containing methods that can operate asynchronously. It is the return type of methods that initiate an asynchronous operation, such as FileStream. BeginRead, and it is passed to methods that conclude an asynchronous operation, such as FileStream.

What is callback function C#?

A callback is a function that will be called when a process is done executing a specific task. The usage of a callback is usually in asynchronous logic. To create a callback in C#, you need to store a function address inside a variable. This is achieved using a delegate or the new lambda semantic Func or Action .