引用：

 private void button3_Click(object sender, EventArgs e)

        {

            System.Threading.Thread s = new System.Threading.Thread(new System.Threading.ThreadStart(test));

            s.ApartmentState = System.Threading.ApartmentState.STA;

            s.Start();}

        public void test()

        {

           

            FolderBrowserDialog browseDialog = new FolderBrowserDialog();

            browseDialog.ShowDialog();

            string selectPath = browseDialog.SelectedPath;

            textBox2.Text = selectPath;

        }

 

        private void textBox2_TextChanged(object sender, EventArgs e)

        {

 

        }

 

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// 设置根在桌面folderBrowserDialog1.RootFolder = SpecialFolder.Desktop;// 设置当前选择的路径folderBrowserDialog1.SelectedPath = "C:";// 允许在对话框中包括一个新建目录的按钮folderBrowserDialog1.ShowNewFolderButton = true;// 设置对话框的说明信息folderBrowserDialog1.Description = "请选择输出目录";if(folderBrowser.Dialog1.ShowDialog() == DialogResult.OK){// 在此添加代码,选择的路径为 folderBrowserDialog1.SelectedPath}