Find the index of the last occurrence of any character in the string "is" within another string. : String Search « String « C# / CSharp Tutorial

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C# / CSharp Tutorial » String » String Search

5.18.9.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);

    }

}

5.18.String Search
	5.18.1.	Search a character in a string
	5.18.2.	Search a character in a string: lastindex
	5.18.3.	Search a sub string in a string
	5.18.4.	Search a sub string in a string: lastIndexOf
	5.18.5.	Search any characters in a string
	5.18.6.	String starts with and ends with
	5.18.7.	Search a string from the start or from the end
	5.18.8.	Use LastIndexOf(Char) to find the last directory separator character in a string and to extract the file name
	5.18.9.	Find the index of the last occurrence of any character in the string "is" within another string.

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