C# 委托中 Invoke/BeginInvoke/EndInvoke和DynamicInvoke 方法的区别和联系

public class Program
{
    public static void Main()
    {
        // 定义委托
        Action action = () => Console.WriteLine("Hello, World!");
        // 同步调用
        action.Invoke();
    }
}

public class Program
{
    public delegate string SimpleDelegate(string message);
    public static string PrintMessage(string message)
    {
        Console.WriteLine($"Message: {message}");
        return "Done";
    }
    public static void Main()
    {
        SimpleDelegate del = PrintMessage;
        string result = del.Invoke("Hello, World!"); // 同步调用
        Console.WriteLine(result);
    }
}

using System;
public class Program
{
    public delegate string SimpleDelegate(string message);
    public static string PrintMessage(string message)
    {
        Console.WriteLine($"Message: {message}");
        return "Done";
    }
    public static void Main()
    {
        SimpleDelegate del = PrintMessage;
        IAsyncResult asyncResult = del.BeginInvoke("Hello, World!", null, null); // 异步调用
        Console.WriteLine("Main method continues...");
        // 等待异步调用完成并获取结果
        string result = del.EndInvoke(asyncResult);
        Console.WriteLine(result);
    }
}

using System;
using System.Threading;
public class Program
{
    public static void Main()
    {
        // 定义委托
        Func<int> func = () =>
        {
            Thread.Sleep(2000);
            Console.WriteLine("Asynchronous operation completed.");
            return 42;
        };
        // 异步调用
        IAsyncResult result = func.BeginInvoke(null, null);
        // 执行其他操作
        Console.WriteLine("Performing other tasks while waiting...");
        // 等待异步操作完成并获取结果
        int returnValue = func.EndInvoke(result);
        Console.WriteLine($"Return value: {returnValue}");
    }
}

using System;
public class Program
{
    public delegate string SimpleDelegate(string message);
    public static string PrintMessage(string message)
    {
        Console.WriteLine($"Message: {message}");
        return "Done";
    }
    public static void Main()
    {
        SimpleDelegate del = PrintMessage;
        object[] args = new object[] { "Hello, DynamicInvoke!" };
        string result = (string)del.DynamicInvoke(args); // 动态调用
        Console.WriteLine(result);
    }
}

using System;
public class Program
{
    public static void Main()
    {
        // 定义委托
        Func<int, int, int> add = (a, b) => a + b;
        // 动态调用
        object result = add.DynamicInvoke(2, 3);
        Console.WriteLine($"Result: {result}");	//输出：Result: 5
    }
}