C# String Contains()

The C# Contains() method is used to return a value indicating whether the specified substring occurs within this string or not. If the specified substring is found in this string, it returns true otherwise false.

Signature

Parameters

str: it is a string object which is used to check occurrence in the calling string.

Return

It returns boolean value either true or false.

C# String Contains() method Example

using System;  
    public class StringExample  
    {  
        public static void Main(string[] args)  
        {  
             string s1 = "Hello ";  
             string s2 = "He";
          	 string s3 = "Hi";
             Console.WriteLine(s1.Contains(s2));
             Console.WriteLine(s1.Contains(s3));
             
        }  
    }  

Output: