C# 自动关闭MessageBox对话框

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace DemoMessageBox
{
    public partial class MainForm : Form
    {
        public MainForm（）
        {
            InitializeComponent（）;
        }

        private void MainForm_Load（object sender EventArgs e）
        {
            //启动线程
            MessageBoxHelper.IsWorking = true;
            MessageBoxHelper.FindAndKillWindow（）;
        }

        private void MainForm_FormClosing（object sender FormClosingEventArgs e）
        {
            //线程终止标识
            MessageBoxHelper.IsWorking = false;
        }

        private void btnOK

 属性            大小     日期    时间   名称
----------- ---------  ---------- -----  ----

     文件        189  2018-04-18 20:44  DemoMessageBox\App.config

     文件      11776  2018-04-18 22:21  DemoMessageBox\bin\Debug\DemoMessageBox.exe

     文件        189  2018-04-18 20:44  DemoMessageBox\bin\Debug\DemoMessageBox.exe.config

     文件      26112  2018-04-18 22:21  DemoMessageBox\bin\Debug\DemoMessageBox.pdb

     文件      22696  2018-04-18 22:28  DemoMessageBox\bin\Debug\DemoMessageBox.vshost.exe

     文件        189  2018-04-18 20:44  DemoMessageBox\bin\Debug\DemoMessageBox.vshost.exe.config

     文件       3988  2018-04-18 21:28  DemoMessageBox\DemoMessageBox.csproj

     文件       2079  2018-04-18 21:53  DemoMessageBox\MainForm.cs

     文件       5747  2018-04-18 21:49  DemoMessageBox\MainForm.Designer.cs

     文件       5817  2018-04-18 21:49  DemoMessageBox\MainForm.resx

     文件       4647  2018-04-18 23:07  DemoMessageBox\MessageBoxHelper.cs

     文件        729  2018-04-18 22:28  DemoMessageBox\obj\Debug\DemoMessageBox.csproj.FileListAbsolute.txt

     文件       1016  2018-04-18 21:51  DemoMessageBox\obj\Debug\DemoMessageBox.csproj.GenerateResource.Cache

     文件       2384  2018-04-18 21:08  DemoMessageBox\obj\Debug\DemoMessageBox.csprojResolveAssemblyReference.cache

     文件      11776  2018-04-18 22:21  DemoMessageBox\obj\Debug\DemoMessageBox.exe

     文件        180  2018-04-18 21:51  DemoMessageBox\obj\Debug\DemoMessageBox.MainForm.resources

     文件      26112  2018-04-18 22:21  DemoMessageBox\obj\Debug\DemoMessageBox.pdb

     文件        180  2018-04-18 21:28  DemoMessageBox\obj\Debug\DemoMessageBox.Properties.Resources.resources

     文件        868  2018-04-18 20:44  DemoMessageBox\obj\Debug\DesignTimeResolveAssemblyReferences.cache

     文件       7152  2018-04-18 21:24  DemoMessageBox\obj\Debug\DesignTimeResolveAssemblyReferencesInput.cache

     文件          0  2018-04-18 20:44  DemoMessageBox\obj\Debug\TemporaryGeneratedFile_036C0B5B-1481-4323-8D20-8F5ADCB23D92.cs

     文件          0  2018-04-18 20:44  DemoMessageBox\obj\Debug\TemporaryGeneratedFile_5937a670-0e60-4077-877b-f7221da3dda1.cs

     文件          0  2018-04-18 20:44  DemoMessageBox\obj\Debug\TemporaryGeneratedFile_E7A71F73-0F8D-4B9B-B56E-8E70B10BC5D3.cs

     文件        529  2018-04-18 21:08  DemoMessageBox\Program.cs

     文件       1336  2018-04-18 20:44  DemoMessageBox\Properties\AssemblyInfo.cs

     文件       2841  2018-04-18 20:44  DemoMessageBox\Properties\Resources.Designer.cs

     文件       5612  2018-04-18 20:44  DemoMessageBox\Properties\Resources.resx

     文件       1101  2018-04-18 20:44  DemoMessageBox\Properties\Settings.Designer.cs

     文件        249  2018-04-18 20:44  DemoMessageBox\Properties\Settings.settings

     目录          0  2018-04-18 20:44  DemoMessageBox\obj\Debug\TempPE

............此处省略10个文件信息