正则取邮箱

 public string GetEmail(string oriText)
    {
        string x = @"/w+([-+.]/w+)*@/w+([-.]/w+)*/./w+([-.]/w+)*";
        MatchCollection Matches = Regex.Matches(oriText, x, RegexOptions.IgnoreCase);
        StringBuilder sb = new StringBuilder();
        foreach (Match NextMatch in Matches)
        {
            // sb.Append(NextMatch.Value+",");
            sb.AppendFormat("{0};", NextMatch.Value);
        }
        return sb.ToString();
    }