//選擇文件，點擊【瀏覽】，選擇文件 private void button1_Click(object sender, EventArgs e) {   OpenFileDialog openFileDialog1 = new OpenFileDialog();   //顯示選擇文件對話框   openFileDialog1.InitialDirectory = "c://";   openFileDialog1.Filter = "txt files (*.txt)|*.txt|All files (*.*)|*.*";   openFileDialog1.FilterIndex = 2;   openFileDialog1.RestoreDirectory = true;    if (openFileDialog1.ShowDialog() == DialogResult.OK)   {     this.textBox1.Text = openFileDialog1.FileName;     //顯示文件路徑   } }     //選擇文件夾：點擊【瀏覽】，選擇文件夾 private void button4_Click(object sender, EventArgs e) {   if (this.folderBrowserDialog1.ShowDialog() == DialogResult.OK)   {     if (this.folderBrowserDialog1.SelectedPath.Trim() != "")       this.textBox4.Text = this.folderBrowserDialog1.SelectedPath.Trim();   } }

folderBrowserDialog1.SelectedPath =“d:/”;