C# String IndexOfAny(Char[], Int32)

Description

String IndexOfAny(Char[], Int32) reports the zero-based index of the first occurrence in this instance of any character in a specified array of Unicode characters. The search starts at a specified character position.

Syntax

String.IndexOfAny(Char[], Int32) has the following syntax.

public int IndexOfAny(
  char[] anyOf,
  int startIndex
)

Parameters

String.IndexOfAny(Char[], Int32) has the following parameters.

• anyOf - A Unicode character array containing one or more characters to seek.
• startIndex - The search starting position.

Returns

String.IndexOfAny(Char[], Int32) method returns The zero-based index position of the first occurrence in this instance where any character in anyOf was found; -1 if no character in anyOf was found.

Example

Sample for String.IndexOfAny(Char[], Int32)

//from w  w  w . j  ava2  s.c o  m
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/2;
        at = str.IndexOfAny(anyOf, start);
        if (at > -1) 
            Console.Write(at);
        else
            Console.Write("(not found)");

    }
}

The code above generates the following result.