Specifying generic collection type param at runtime

c# generics casting runtime
tim picture tim · Feb 5, 2009 · Viewed 20.3k times · Source

I have:

class Car {..}
class Other{
  List<T> GetAll(){..}
}

I want to do:

Type t = typeof(Car);
List<t> Cars = GetAll<t>();

How can I do this?

I want to return a generic collection from the database of a type that I discover at runtime using reflection.

Answer

Tron picture Tron · Feb 5, 2009 
Type generic = typeof(List<>);    
Type specific = generic.MakeGenericType(typeof(int));    
ConstructorInfo ci = specific.GetConstructor(Type.EmptyTypes);    
object o = ci.Invoke(new object[] { });

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