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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
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
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
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