How to generate List of Anonymous Types in C#

Normally, we can use List<T> when T is a strong type, then we can add Class T to that List. However, we can trick it by creating a method that receive generic type T, and create List of type T as a return.

// Tricky method to return anonymous List
public static CreateList<T>(T ob)
{
     var list = new List();
     return list;
}

// Create anonymous object, and let's generate our list
var person = new { Name = "Hello", Age = 10 };
var list = CreateList(person);
list.Add(person);
list.Add(new { Name="John", Age = 47 });

It is useful in some cases, but be careful that anonymous objects you created are read-only objects, we can't modify their data after we created them.