如何在C#中阻止键盘和鼠标输入？

using System;
using System.Runtime.InteropServices;

public class KeyboardMouseInputBlocker
{
    [DllImport("user32.dll")]
    private static extern bool BlockInput(bool block);

    public static void Block()
    {
        BlockInput(true);
    }

    public static void Unblock()
    {
        BlockInput(false);
    }
}

KeyboardMouseInputBlocker.Block();
// 在这里执行需要阻止输入的代码
KeyboardMouseInputBlocker.Unblock();