using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using Shell32;
using System.IO;

namespace TestWin7Taskbar
{
    class Win7Taskbar
    {
        public static bool LockApp(bool isLock, string appPath)
        {
            Shell shell = new Shell();
            Folder folder = shell.NameSpace(Path.GetDirectoryName(appPath));
            FolderItem app = folder.ParseName(Path.GetFileName(appPath));
            string sVerb = isLock ? "锁定到任务栏(&K)" : "从任务栏脱离(&K)";

            foreach (FolderItemVerb Fib in app.Verbs())
            {
                if (Fib.Name == sVerb)
                {
                    Fib.DoIt();
                    return true;
                }
            }

            return false;

        }
    }
}

string appPath = @"C:\Windows\notepad.exe";
Console.WriteLine(Win7Taskbar.LockApp(true, appPath) ? "锁定程序成功" : "锁定程序失败");

Console.ReadKey();

Console.WriteLine(Win7Taskbar.LockApp(false, appPath) ? "解锁程序成功" : "解锁程序失败");