1 private void button1_Click(object sender, RoutedEventArgs e)
2 {        
3     FolderBrowserDialog fbd = new FolderBrowserDialog();　　　    
4     fbd.Description = "pls select a folder";　　　
5     if(fbd.ShowDialog() == DialogResult.OK)    
6     {　      
7         textBox1.Text = fbd.SelectedPath;  
8      }
9 }