ADO.NET :: Return Type Of Linq To SQL Stored Procedures?

I am using .net framework 3.5 and sql server 2008.

In my project coding, I want to call stored procedures in sql server 2008.

return value is the object list which references the entity.

But I have the questions.

If in the entity named as "order", is it matching the properties or created through entity constructor??

In my case, I have two properties and one constructor which match one property.

public class orders

{
orders ( string orderid)
{
this.orderid=orderid;
}
public string orderid {get;set;}
public string orderno{get;set;}
}