>>>When would you use
>>>
>>>

>>>var NewCust = new { CustomerId = 1, Name = "Mike Hanley" };
>>>

>>>
>>>as opposed to
>>>

>>>Customer NewCust = new Customer() { CustomerId = 1, Name = "Mike Hanley" };
>>>

>>>
>>>or
>>>

>>>var NewCust = new Customer() { CustomerId = 2, Name = "Kevin Hanley" };
>>>

>>>
>>>The Anonymous type seems confusing.
>>Example from:http://msdn.microsoft.com/en-us/library/bb383973.aspx

var custQuery = from cust in customers
>>                where cust.City == "Phoenix"
>>                select new { cust.Name, cust.Phone };
>>foreach (var item in custQuery)
>>{
>>    Console.WriteLine("Name={0}, Phone={1}", item.Name, item.Phone);
>>}

If the Customer class has loads of other properties (obviously not required in this instance) then creating the light-weight anonymous type makes sense.....
>
>
>But how does C# know that
>
>

>var NewCust = new { CustomerId = 1, Name = "Mike Hanley" };
>

>
>is a Customer class?


Its not a customer class, its an anonymous class with 2 properties.