c# 用正則表達式獲取開始和結束字符串中間的值

 1 /// <summary>
 2 /// 得到字符串中開始和結束字符串中間得值
 3 /// </summary>
 4 /// <param name="str">字符串</param>
 5 /// <param name="s">開始</param>
 6 /// <param name="e">結束</param>
 7 /// <returns></returns> 
 8 public static string GetValue(string str, string s, string e)
 9 {
10 Regex rg = new Regex("(?<=(" + s + "))[.\\s\\S]*?(?=(" + e + "))", RegexOptions.Multiline | RegexOptions.Singleline);
11 return rg.Match(str).Value;
12 }