C# String LastIndexOfAny()

The C# LastIndexOfAny() method is used to find index position of the last occurrence of one or more characters specified in this string.

Signature

public int LastIndexOfAny(Char[] ch)
public int LastIndexOfAny(Char[], Int32)
public int LastIndexOfAny(Char[], Int32, Int32)

Parameter

ch: it is a character type array.

Return

It returns integer value.

C# String LastIndexOfAny() Method Example

    using System; 
    public class StringExample  
    {  
        public static void Main(string[] args)  
        {  
           string s1 = "abracadabra";
           char[] ch = {'r','b'};
           int index = s1.LastIndexOfAny(ch);//Finds 'r' at the last
           Console.WriteLine(index);
        }  
    }  

Output:

C# String LastIndexOfAny() Method Example 2

    using System; 
    public class StringExample  
    {  
        public static void Main(string[] args)  
        {  
           string s1 = "abracadabra";
           char[] ch = {'t','b'};
           int index = s1.LastIndexOfAny(ch);//Finds 'b' at the last
           Console.WriteLine(index);
        }  
    }  

Output:

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