winform中放了一个TextBox，怎样慢慢滚动翻屏?先感谢前辈了！

Question

环境：c#+winform+vs2008
问题：在一个winform中放了一个TextBox，multiline=True。由于TextBox里边放了几千字的文本，所以想打开页面时就让TextBox慢慢滚动翻屏。　　先感谢前辈了！

Answer 1

增加一个timer
在timer的tick中，设置TextBox.SelectIndex，每次为下一行的第一个字符位置。执行TextBox的ScoreToCaste方法。

Answer 2

[DllImport("user32.dll", EntryPoint = "SendMessage")]
  public static extern int SendMessage(IntPtr hWnd, int wMsg, int wParam, int lParam);
        [DllImport("user32")]
        public static extern int GetScrollPos(IntPtr hwnd, int nBar);
        [DllImport("user32.dll")]
        static extern int SetScrollPos(IntPtr hWnd, int nBar,int nPos, bool bRedraw);
        public const int EM_LINESCROLL = 0xb6;
        private void timer1_Tick(object sender, EventArgs e)
        {
          int i=  GetScrollPos(this.textBox1.Handle,1);
            SendMessage(this.textBox1.Handle, EM_LINESCROLL, 0, 1);
            if (i == GetScrollPos(this.textBox1.Handle, 1))
            {
                this.textBox1.SelectionStart = 0;
                this.textBox1.SelectionLength = 1;
                this.textBox1.ScrollToCaret();
                this.textBox1.SelectionLength = 0;
            }
            Console.WriteLine(i);
        }
        private void textBox1_MouseEnter(object sender, EventArgs e)
        {
            this.timer1.Stop();
        }
        private void textBox1_MouseLeave(object sender, EventArgs e)
        {
            this.timer1.Start();
        }
http://topic.csdn.net/u/20080516/16/ee1e0f44-ec0a-4f46-bd36-3cbb7ec2bf17.html

Answer 3

http://blog.csdn.net/jianuMan/archive/2010/06/19/5680535.aspx文本自动重复滚屏的例子