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Categories / C# Tutorial / String

 

Find the index of the last occurrence of any character in the string is within another string

using System; class Sample {     public static void Main() {     string str = "this is a test.";     int start;     int at;     string target = "is";     char[] anyOf = target.ToCharArray();     start = str.Length-1;     at = str.LastIndexOfAny(anyOf);     if (at > -1)          Console.Write(at);     else         Console.Write("(not found)");         Console.Write("{0}{0}{0}", Environment.NewLine);     } }