A brief analysis of the callback mechanism of C#

This article briefly analyzes the callback mechanism of C#. Share it for your reference. The specific analysis is as follows:

1. Callbacks sound high-end, but in fact they are essentially delegated. Callbacks are an application of delegated, and their essence is delegated.

2. Generally, callbacks mostly use threads, so they are mostly declared as class-level variables. (It is at the same level as the class, not a local variable inside a method).

3. Settings:

Setting checking legal cross-thread call to false means that it does not check. This is not allowed in project development, which will lead to non-thread safety and strange bugs.

4. Initialize the callback method (essentially instantiated delegate).

5. The thread must be started first and then blocked, otherwise the thread will be started after the blocking operation is completed.

6. Settings:

Triggers the action of the operation object (essentially, it is the Invoke method that passes the delegate as a parameter to the control, which is specifically used to accept delegates).

I hope this article will be helpful to everyone's C# programming.