利用正则表达式自动给Email地址和Url加上连接

using System;

using System.Text.RegularExpressions;

 namespace CommLayer

...{
       /**//// <summary>

       /// 自动给邮件地址或email地址加上url

       /// </summary>

       public class HyperlinkUrl

       ...{

              private static Regex urlregex = new Regex(@"(http://([w.]+/?)S*)", 

                     RegexOptions.IgnoreCase|RegexOptions.Compiled);

              private static Regex emailregex = new Regex(@"([a-zA-Z_0-9.-]+@[a-zA-Z_0-9.-]+.w+)", 

                     RegexOptions.IgnoreCase|RegexOptions.Compiled);

              

              public HyperlinkUrl()

              ...{                   

              }

               /**//// <summary>

              /// 生成带连接的字符串

              /// </summary>

              /// <param name="link">需要生成带连接地址的字符串</param>

              /// <returns>经过转换的字符串</returns>

              public static string GenHyperlinkUrl(string link)

              ...{

                     link = emailregex.Replace(link, "<a href=mailto:$1>$1</a>"); 

                     link = urlregex.Replace(link, "<a href="$1" target="_blank">$1</a>");

                      return link;

              }

       }

}