Regex regex = new Regex(this.textBoxRegex.Text);            Match result = regex.Match(this.textBoxText.Text);                       if (result.Success)            {                StringBuilder sb = new StringBuilder();                foreach (var groupName in regex.GetGroupNames())                {                    sb.AppendLine(String.Format("<{0}>{1}", groupName,                        result.Groups[regex.GroupNumberFromName(groupName)].Value));                }                this.textBoxMatchResult.Text = sb.ToString();            }            else            {                MessageBox.Show("匹配失败");            }