c# 我做记事本，不知道转到怎样写

Question

string s="";
int index = this.richTextBox1.Find(s);
if (index < 0)
{
  MessageBox.Show("查找不到");
  return;
}
this.richTextBox1.SelectionStart = index;
this.richTextBox1.SelectionLength = s.Length;
this.richTextBox1.Focus();

Answer 1

发送 EM_LINESCROLL 消息
wParam设置为0。
lParam指定为行数。

Answer 2

发送 EM_LINESCROLL 消息？具体一点，不会...

Answer 3

记事本主界面是richtextbox,在转到对话框中是textbox

Answer 4

richtextbox1.SelectedIndex = 0;
richtextbox1.ScrollToCast();

Answer 5

声明API。然后
SendMessage(RichEdit1.Handle, EM_LINESCROLL, 0, LineNumber);

Answer 6

 private void 转到ToolStripMenuItem_Click(object sender, EventArgs e)
        {
            Form5 f5 = new Form5();
            f5.LineNumber = SendMessage(this.richTextBox1.Handle, EM_LINEFROMCHAR, this.richTextBox1.SelectionStart, 0) + 1;
                if ((f5.ShowDialog() == DialogResult.OK) && (f5.LineNumber < this.richTextBox1.Lines.Length))
                {
                    this.richTextBox1.SelectionLength = 0;
                    this.richTextBox1.SelectionStart = SendMessage(this.richTextBox1.Handle, EM_LINEINDEX, f5.LineNumber - 1, 0);
                    this.richTextBox1.Focus();
                    Point cursorPos = GetCursorPos(this.richTextBox1);
                    this.toolStripStatusLabel2.Text = "行：" + cursorPos.Y.ToString() + " 列：" + cursorPos.X.ToString();
                }
        
            // MessageBox.Show("行数超过范围", "记事本　－跳行", MessageBoxButtons.OK); 
        }

Answer 7

？ Point cursorPos = GetCursorPos(this.richTextBox1);中的 GetCursorPos（）怎样写？？