解决百度网盘提取码自动填充

private void button1_Click(object sender, EventArgs e)
    { // 切换输入法为英文
      SendKeys.Send("%+"); // 发送Alt+Shift键盘组合

      string content = richTextBox1.Text;
      string[] lines = content.Split('\n');
      string link = lines[0].Replace("链接：", "").Trim();
      string code = lines[1].Replace("提取码：", "").Trim();

      System.Diagnostics.Process.Start(link); // 打开链接

      System.Threading.Thread.Sleep(2000); // 等待2秒钟

      // 模拟输入鼠标光标的位置
      System.Windows.Forms.SendKeys.SendWait(code);
      System.Windows.Forms.SendKeys.SendWait("{ENTER}");
    }
================
 private void PasteMenuItem_Click(object sender, EventArgs e)
    {
      richTextBox1.Paste();
    }
===================
 public Form1()
    {
      InitializeComponent();
      richTextBox1.ContextMenuStrip = new ContextMenuStrip();
      ToolStripMenuItem pasteMenuItem = new ToolStripMenuItem("粘贴");
      pasteMenuItem.Click += PasteMenuItem_Click;
      richTextBox1.ContextMenuStrip.Items.Add(pasteMenuItem);
    }