/*
* 1. Equals and == both will work same for value types, but it can be different for reference types.
* 2. If Reference equality is true then, value equality must be true,
* but value equality does not gaurantee the reference equality.
*
* 3. == operator will give us value equality of value types where as equals will give us reference equality.
*/
static void Main(string[] args)
{
Direction dir1 = Direction.East;
Direction dir2 = Direction.East;
Console.WriteLine("Comaparision using == operator is :: {0}", dir1 == dir2);
Console.WriteLine("Comaparision using Equals operator is :: {0}", dir1.Equals(dir2));
#region 2. Comparision of reference types
Console.WriteLine("\nComparision of reference types ::");
Customer c1 = new Customer();
c1.FirstName = "Anand Dev";
c1.LastName = "Singh";
Customer c2 = c1;
Console.WriteLine(c1 == c2);
Console.WriteLine(c1.Equals(c2));
Console.WriteLine("\nIf Reference equality is true then, value equality must be true, but value equality does not gaurantee the reference equality.");
Customer c3 = new Customer();
c3.FirstName = "Simon";
c3.LastName = "Tan";
Customer c4 = new Customer();
c4.FirstName = "Simon";
c4.LastName = "Tan";
Console.WriteLine(c3 == c4);
Console.WriteLine(c3.Equals(c4));
#endregion
#region 3. After overriding the equals method.
Console.WriteLine("\nAfter overriding the equals method.");
CustomerOverriddenEquals c5 = new CustomerOverriddenEquals();
c5.FirstName = "Nanhi";
c5.LastName = "Malhotra";
CustomerOverriddenEquals c6 = new CustomerOverriddenEquals();
c6.FirstName = "Nanhi";
c6.LastName = "Malhotra";
Console.WriteLine(c5 == c6);
Console.WriteLine(c5.Equals(c6));
#endregion
Console.ReadKey();;
}
/*
* 1. Equals and == both will work same for value types, but it can be different for reference types.
* 2. If Reference equality is true then, value equality must be true,
* but value equality does not gaurantee the reference equality.
*
* 3. == operator will give us value equality of value types where as equals will give us reference equality.
*/
static void Main(string[] args)
{
Direction dir1 = Direction.East;
Direction dir2 = Direction.East;
Console.WriteLine("Comaparision using == operator is :: {0}", dir1 == dir2);
Console.WriteLine("Comaparision using Equals operator is :: {0}", dir1.Equals(dir2));
#region 2. Comparision of reference types
Console.WriteLine("\nComparision of reference types ::");
Customer c1 = new Customer();
c1.FirstName = "Anand Dev";
c1.LastName = "Singh";
Customer c2 = c1;
Console.WriteLine(c1 == c2);
Console.WriteLine(c1.Equals(c2));
Console.WriteLine("\nIf Reference equality is true then, value equality must be true, but value equality does not gaurantee the reference equality.");
Customer c3 = new Customer();
c3.FirstName = "Simon";
c3.LastName = "Tan";
Customer c4 = new Customer();
c4.FirstName = "Simon";
c4.LastName = "Tan";
Console.WriteLine(c3 == c4);
Console.WriteLine(c3.Equals(c4));
#endregion
#region 3. After overriding the equals method.
Console.WriteLine("\nAfter overriding the equals method.");
CustomerOverriddenEquals c5 = new CustomerOverriddenEquals();
c5.FirstName = "Nanhi";
c5.LastName = "Malhotra";
CustomerOverriddenEquals c6 = new CustomerOverriddenEquals();
c6.FirstName = "Nanhi";
c6.LastName = "Malhotra";
Console.WriteLine(c5 == c6);
Console.WriteLine(c5.Equals(c6));
#endregion
Console.ReadKey(); ;
}
