C# String IndexOf(Char, Int32)

Description

String IndexOf(Char, Int32) reports the zero-based index of the first occurrence of the specified Unicode character in this string. The search starts at a specified character position.

Syntax

String.IndexOf(Char, Int32) has the following syntax.

public int IndexOf(
  char value,
  int startIndex
)

Parameters

String.IndexOf(Char, Int32) has the following parameters.

• value - A Unicode character to seek.
• startIndex - The search starting position.

Returns

String.IndexOf(Char, Int32) method returns The zero-based index position of value if that character is found, or -1 if it is not.

Example

The following example demonstrates the IndexOf method.

//from  www. j  av  a 2  s.co m
using System;

class Sample {
    public static void Main() {

        string str = "This is a test from java2s.com.";
        int start = 0; 
        int at = 0;
        while((start < str.Length) && (at > -1)){
            at = str.IndexOf('t', start);
            if (at == -1) break;
            Console.Write("{0} ", at);
            start = at+1;
        }

    }
}

The code above generates the following result.