Difference between == and .Equals method in c#

The Equality Operator ( ==) is the comparison operator and the Equals() method in C# is used to compare the content of a string.

The Equals() method compares only content.

Example

 Live Demo

using System;
namespace ComparisionExample {
   class Program {
      static void Main(string[] args) {
         string str = "hello";
         string str2 = str;
         Console.WriteLine("Using Equality operator: {0}", str == str2);
         Console.WriteLine("Using equals() method: {0}", str.Equals(str2));
         Console.ReadKey();
      }
   }
}

Output

Using Equality operator: True
Using equals() method: True

The Equality operator is used to compare the reference identity.

Let us see another example.

Example

 Live Demo

using System;
namespace Demo {
   class Program {
      static void Main(string[] args) {
         object str = "hello";
         char[] values = {'h','e','l','l','o'};
         object str2 = new string(values);
         Console.WriteLine("Using Equality operator: {0}", str == str2);
         Console.WriteLine("Using equals() method: {0}", str.Equals(str2));
         Console.ReadKey();
      }
   }
}

Output

Using Equality operator: False
Using equals() method: True