/// <summary>         /// 应用程序的主入口点。         /// </summary>         [STAThread]         static void Main()         {             Application.EnableVisualStyles();             Application.SetCompatibleTextRenderingDefault(false);             Application.Run(new Form1());         }

private void button1_Click(object sender, EventArgs e)         {             FolderBrowserDialog dilog = new FolderBrowserDialog();             dilog.Description = "请选择文件夹";             if(dilog.ShowDialog() == DialogResult.OK || dilog.ShowDialog() == DialogResult.Yes)             {                 path=dilog.SelectedPath;             }         }

private void button2_Click(object sender, EventArgs e)         {             if (!string.IsNullOrEmpty(path))             {                 System.Diagnostics.Process.Start("Explorer.exe", path);             }             else             {                 MessageBox.Show("请选择路径");             }         }

private void button1_Click(object sender, EventArgs e)         {             Thread newThread = new Thread(new ThreadStart(TEST));             newThread.SetApartmentState(ApartmentState.STA);             newThread.Start();             //或             //Thread app = new Thread(new ParameterizedThreadStart(TEST));//两个TEST方法不一样，委托类型不一样             //app.ApartmentState = ApartmentState.STA;             //app.Start();         }         private void TEST(object obj)         {             FolderBrowserDialog dilog = new FolderBrowserDialog();             dilog.Description = "请选择文件夹";             if(dilog.ShowDialog() == DialogResult.OK)             {                 path=dilog.SelectedPath;             }         }         private void TEST()         {             FolderBrowserDialog dilog = new FolderBrowserDialog();             dilog.Description = "请选择文件夹";             if (dilog.ShowDialog() == DialogResult.OK)             {                 path = dilog.SelectedPath;             }         }