RichTextBox高亮显示 输入内容时滚动条不停的滚动，文本也在闪烁

RichTextBox高亮显示 输入内容时滚动条不停的滚动，文本也在闪烁

C# code

private void tSql_TextChanged(object sender, EventArgs e){string tokens = "(module|export|define|include|record|gen_tcp:listen|io:fwrite|lists:foreach|case|enum|register|typedef|char|extern|return|union|const|float|short|unsigned|continue|for|signed|void|default|goto|sizeof|volatile|if|static|while)";            Regex rex = new Regex(tokens);            MatchCollection mc = rex.Matches(tSql.Text);            int StartCursorPosition = tSql.SelectionStart;            foreach (Match m in mc)            {                int startIndex = m.Index;                int StopIndex = m.Length;                tSql.Select(startIndex, StopIndex);                tSql.SelectionColor = Color.Blue;                tSql.Select(StartCursorPosition, 0);                //tSql.SelectionStart = StartCursorPosition;                tSql.SelectionColor = Color.Black;            }}

请帮助我，输入内容时，怎样让内容不闪烁，滚动条不自动滚动，非常感谢。

[解决办法]
看看这个吧
http://www.cnblogs.com/birdshover/archive/2007/01/30/635230.html
[解决办法]
你有一个foreach啊，循环选择，取消的，怎么能不闪呢，你还是固定好选哪个吧，不要循环变化