自动识别超链接

 /// <summary>
    /// 自动识别超链接
    /// </summary>
    /// <param name="Text"></param>
    /// <returns></returns>
    private string Url_自动识别(string Text)//网络上找到
    {
        //用正则表达式识别URL超链接http(s)?://([/w-]+/.)+[/w-]+(/[/w- ./?%&=]*)?
        Regex UrlRegex = new Regex(@"(http:([/w.]+//?)/S*)", RegexOptions.IgnoreCase | RegexOptions.Compiled);
        //用正则来查询
       
        MatchCollection matches = UrlRegex.Matches(Text);
        foreach (Match match in matches)
        {
            Text = Text.Replace(match.Value, string.Format("<a href=/"{0}/" target=/"_blank/">{1}</a>", match.Value, match.Value));
        }
        //用正则表达式识别Email地址，和查询超链接一样
        Regex EmailRegex = new Regex(@"([a-zA-Z_0-9.-]+/@[a-zA-Z_0-9.-]+/./w+)", RegexOptions.IgnoreCase | RegexOptions.Compiled);
        matches = EmailRegex.Matches(Text);
        foreach (Match match in matches)
        {
            Text = Text.Replace(match.Value, string.Format("<a href=mailto:{0}>{1}</a>", match.Value, match.Value));
        }
        return Text;
    }