C# String LastIndexOfAny(Char[])

Description

String LastIndexOfAny(Char[]) reports the zero-based index position of the last occurrence in this instance of one or more characters specified in a Unicode array.

Syntax

String.LastIndexOfAny(Char[]) has the following syntax.

public int LastIndexOfAny(
  char[] anyOf
)

Parameters

String.LastIndexOfAny(Char[]) has the following parameters.

• anyOf - A Unicode character array containing one or more characters to seek.

Returns

String.LastIndexOfAny(Char[]) method returns The index position of the last occurrence in this instance where any character in anyOf was found; -1 if no character in anyOf was found.

Example

Sample for String.LastIndexOfAny(Char[])

/*  w  w w.j a v  a  2s. co  m*/
using System;

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

The code above generates the following result.