菜鸟求指导 richtextbox自动填值
本帖最后由 gzm998128gzm 于 2013-02-18 17:24:36 编辑 原先richtextbox里面有值了，现在我在某一行大哥回车键 ，在新出来的那行自动填值（什么值无所谓）
[解决办法]
private void richTextBox1_KeyDown(object sender, KeyEventArgs e)
{

if (e.KeyCode == Keys.Enter)
{
richTextBox1.Text += "qwer";
richTextBox1.Select(richTextBox1.TextLength, 0);

}
}
[解决办法]
用AppendText
[解决办法]
\r\n是换行

        private void richTextBox1_KeyDown(object sender, KeyEventArgs e)
        {
            if (e.KeyCode == Keys.Return)
            {
                richTextBox1.AppendText("\r\naaa");
                e.Handled = true;
            }
        }

[解决办法]
private void richTextBox1_KeyUp(object sender, KeyEventArgs e)
{
if (e.KeyCode == Keys.Return)
{
int index = richTextBox1.GetFirstCharIndexOfCurrentLine();
int line = richTextBox1.GetLineFromCharIndex(index);
String[] lines = richTextBox1.Lines;
lines[line] = "24324234234234";
richTextBox1.Lines = lines;
}
}
[解决办法]
光标你可以Set的啊

        private void richTextBoxCh_KeyUp(object sender, KeyEventArgs e)
        {
            if (e.KeyCode == Keys.Return) 
 
            {
                int pos = richTextBoxCh.SelectionStart;
                string str = richTextBoxCh.Text;

                string str2 = str.Substring(0, pos) + "test" + str.Substring(pos);

                richTextBoxCh.Text = str2;
                richTextBoxCh.SelectionStart = pos ;

                e.Handled = true;
            }
        }