C# String IndexOf()

The C# IndexOf() is used to get index of the specified character present in the string. It returns index as an integer value.

Signature

public int IndexOf(Char ch)
public int IndexOf(Char, Int32)
public int IndexOf(Char, Int32, Int32)
public int IndexOf(String)
public int IndexOf(String, Int32)
public int IndexOf(String, Int32, Int32)
public int IndexOf(String, Int32, Int32, StringComparision)
public int IndexOf(String, Int32, StringComparision)
public int IndexOf(String, StringComparision)

Parameters

ch: it is a character type parameter.

Return

It returns an integer value.

C# String IndexOf() Method Example

    using System;  
    public class StringExample  
    {  
        public static void Main(string[] args)  
        {  
          string s1 = "Hello C#";
          int index = s1.IndexOf('e');
          Console.WriteLine(index);
        }  
    }  

Output:

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