this.richTextBox1.Focus();
this.richTextBox1.ScrollToCaret()
或者
用SendMesage()api;int moveLines=1;
int EM_LINESCROLL=0xB6;
SendMessage(textBox1.Handle, EM_LINESCROLL, 0, moveLines);
this.richTextBox1.ScrollToCaret()
或者
用SendMesage()api;int moveLines=1;
int EM_LINESCROLL=0xB6;
SendMessage(textBox1.Handle, EM_LINESCROLL, 0, moveLines);
richTextBox1.Select(richTextBox1.TextLength,0);