CRM 2011 CS: Use the Early Bound Entity Classes for Create, Update, and Delete

// This is how to Use the Early Bound Entity Classes for Create, Update, and Delete in CRM 2011

Create a New Entity Record Using the Early-bound Entity Classes and the Organization Service Context
OrganizationServiceContext orgContext =new OrganizationServiceContext(_serviceProxy);
Contact contact = new Contact()
{
   FirstName = "xyz",
   LastName = "abc",
   Address1_Line1 = "1337",
   Address1_City = "London",
   Address1_StateOrProvince = " South Wales ",
   Address1_PostalCode = "000000",
   Telephone1 = "44-123-4567"
};
orgContext.AddObject(contact);
orgContext.SaveChanges();


Update a New Entity Record Using the Early-bound Entity Classes and the Organization Service Context
var contact =  orgContext .CreateQuery<Contact>().First(c => c.FirstName == "xyz");
contact.JobTitle = "xCRM Hack";
orgContext .UpdateObject(contact);
orgContext .SaveChanges();


Delete a New Entity Record Using the Early-bound Entity Classes and the Organization Service Context
var contact =  orgContext .CreateQuery<Contact>().First(c => c.FirstName == "xyz");
orgContext .DeleteObject(contact);
orgContext .SaveChanges();



Create a New Entity Record Using the Early-Bound Entity Classes and without a Context Object
Contact contact = new Contact()
{
   FirstName = "xyz",
   LastName = "abc",
   Address1_Line1 = "1337",
   Address1_City = "London",
   Address1_StateOrProvince = " South Wales ",
   Address1_PostalCode = "000000",
   Telephone1 = "44-123-4567"
};
_contactId = _serviceProxy.Create(contact);