Anonymous types are great feature. You can code stuff like this:
static void Main(string[] args)
{
var student = new { Name = "Svetlozar", LastName = "Angelov" };
Console.WriteLine("Student - Name: {0}, Lastname: {1}",student.Name, student.LastName);
}
I believe most C# programmers love the way you can LINQ with anonymous types. Let’s see another example.
string[] Names = new string[] { "Svetlozar", "George", "Ivan" };
string[] LastNames = new string[] {"Angelov", "Dimitrov", "Ivanov" };
var students =
from name in Names
from lastname in LastNames
select new
{
Name = name
, Lastname = lastname
};
foreach(var student in students)
Console.WriteLine("{0} {1}",student.Name,student.Lastname);
Here comes the problem if we want to move the LINQ into a method.
public static IEnumerable<WHAT> GetNamesCombinations(string[] names, string[] lastnames)
{
var students =
from name in names
from lastname in lastnames
select new
{
Name = name
, Lastname = lastname
};
return students;
}
Here you have to create a type (Student for example) and to do it this way -
public static IEnumerable<Student> GetNamesCombinations(string[] names, string[] lastnames)
{
var students =
from name in names
from lastname in lastnames
select new Student
{
Name = name
, Lastname = lastname
};
return students;
}
but it is really annoying to create the Student class by hand. Visual Studio 2010 has a nice feature
and
Finally you end up with
class Student
{
public string Name { get; set; }
public string Lastname { get; set; }
}
Subscribe