用C#关闭特定于IE的窗口时，使用Kill不起作用

using System;
using System.Diagnostics;
using System.Runtime.InteropServices;

class Program
{
    [DllImport("user32.dll", CharSet = CharSet.Auto, SetLastError = true)]
    public static extern IntPtr FindWindow(string lpClassName, string lpWindowName);

    [DllImport("user32.dll", CharSet = CharSet.Auto, SetLastError = true)]
    public static extern int SendMessage(IntPtr hWnd, int Msg, int wParam, int lParam);

    static void Main(string[] args)
    {
        string windowTitle = "特定的IE窗口标题";
        IntPtr ieHandle = FindWindow(null, windowTitle);

        if (ieHandle != IntPtr.Zero)
        {
            const int WM_CLOSE = 0x10;
            SendMessage(ieHandle, WM_CLOSE, 0, 0);
        }
        else
        {
            Console.WriteLine("未找到指定的IE窗口");
        }
    }
}