C# Invoke and BeginInvoke Guide

In C#, both Invoke and BeginInvoke are methods used to execute a delegate in a multithreaded environment.

The Invoke method is used to synchronously execute a delegate, blocking the current thread until the delegate is complete. The usage is as follows:

// 假设有一个委托类型为Action的变量 action
action.Invoke();

The BeginInvoke method is a way to asynchronously execute delegates, which will be executed in another thread. Here is how it can be used:

// 假设有一个委托类型为Action的变量 action
action.BeginInvoke(null, null);

In the BeginInvoke method, the first parameter is a callback function of type AsyncCallback, which is used to perform certain operations after the delegate has finished executing; the second parameter is an object used to pass parameters to the delegate.

It is important to note that the parameters passed in the BeginInvoke method need to be of type object. If multiple parameters need to be passed, you can use a Tuple or create a custom class to encapsulate the parameters.