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                ``` //------//搜索字符串(參數1:目標字符串,參數2:之前字符串,參數3:之后字符串)----(獲取兩個字符串中間的字符串) public static string Search_string(string s, string s1, string s2) //獲取搜索到的數目 { int n1, n2; n1 = s.IndexOf(s1, 0) + s1.Length; //開始位置 n2 = s.IndexOf(s2, n1); //結束位置 return s.Substring(n1, n2 - n1); //取搜索的條數,用結束的位置-開始的位置,并返回 } //----------------------------------------------------------------------- ```
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