C# 提示浏览选择本地文件夹

在form窗体 上添加一个Button按钮一个TextBox文本框

添加两个名空间:

using System.IO;
using System.Diagnostics;

然后在BUTTON按钮下写事件
程序代码
private void button1_Click(object sender, EventArgs e)
{
     FolderBrowserDialog folderDialog = new FolderBrowserDialog();
     folderDialog.RootFolder = Environment.SpecialFolder.MyComputer;
     if ((folderDialog.ShowDialog() == System.Windows.Forms.DialogResult.OK))
     {
         this.DestionFileTextBox.Text = folderDialog.SelectedPath;
     }

}