正则表达式替换问题

Question

我想替换为什么此代码不起作用？

MessageBox.Show( Regex.Replace(Regex.Escape(@"c:\www\html"), Regex.Escape(@"c:\www\"), "", RegexOptions.IgnoreCase));

Answer 1

It doesn't work because you escaped not only your search pattern but also your query string. Don't do that:

var result = Regex.Replace(
    @"c:\www\html", Regex.Escape(@"c:\www\"), "", RegexOptions.IgnoreCase));