Dynamically create a c# generic type with self referenced constraints

Question

I have a generic type that look like this

public class Entity<T> where T : Entity<T>{ ... }

and I need to dynamically construct the type T. So that it looks like this:

public class MyClass : Entity<MyClass>{ ... }

Can this be done ?

Answer 1

AssemblyName assemblyName = new AssemblyName("TestAssembly");
AssemblyBuilder assemblyBuilder = AppDomain.CurrentDomain.DefineDynamicAssembly(assemblyName, AssemblyBuilderAccess.Run);

ModuleBuilder moduleBuilder = assemblyBuilder.DefineDynamicModule(assemblyName.Name);

TypeBuilder typeBuilder = moduleBuilder.DefineType("MyClass", TypeAttributes.Public);

Type entityType = typeof(Entity<>).MakeGenericType(typeBuilder);

typeBuilder.SetParent(entityType);


Type t = typeBuilder.CreateType();