Question

I understood,normally generics is for compile time safe and allow us to keep strongly typed collection.Then how do generic allow us to store anonymous types like

List<object> TestList = new List<object>();
TestList.Add(new { id = 7, Name = "JonSkeet" });
TestList.Add(new { id = 11, Name = "Marc Gravell" });
TestList.Add(new { id = 31, Name = "Jason" });

Answer 1

This works because object is the root type of all instances in .Net. Hence anything expression can be used for a location expecting an object because they all meet the basic contract of System.object.

For example the following is completely legal.

List<object> TestList = new List<object>();
TestList.Add(new { id = 7, Name = "JonSkeet" });
TestList.Add("Foo");
TestList.Add(42);