Is it possible in C# to create a type at runtime that inherits from a generic class where the template parameter for the base class is the current class being constructed? This will compile fine:
// I have this class:
public class OtherClass<T>
where T : OtherClass<T>
{ }
// I want to create this at runtime:
public class MyClass : OtherClass<MyClass>
{ }
but I'm not sure how to create the MyClass
using System.Reflection.Emit.ModuleBuilder.TypeBuilder
:
AssemblyName asn = new AssemblyName("test.dll");
AssemblyBuilder asb = AppDomain.CurrentDomain.DefineDynamicAssembly(
asn, AssemblyBuilderAccess.RunAndSave, @"D:est_assemblies");
ModuleBuilder = modb = asb.DefineDynamicModule("test", "test.dll");
TypeBuilder tb = modb.DefineType(
"test",
TypeAttributes.Public | TypeAttributes.Class,
typeof(MyClass)); // How to specify inheritance?
// populate properties, fields, methods, etc., emit...
tb.CreateType();
Is this possible?
Edit - Based on replies so far, I've tried this:
public class OtherClass<T>
where T : OtherClass<T>
{ }
public static void CreateSimple()
{
AssemblyName asn = new AssemblyName("test");
AssemblyBuilder asb = AppDomain.CurrentDomain.DefineDynamicAssembly(
asn, AssemblyBuilderAccess.RunAndSave, @"D:est_asms");
ModuleBuilder modb = asb.DefineDynamicModule("test", "test.dll");
try
{
TypeBuilder tb = modb.DefineType(
"MyClass",
TypeAttributes.Public | TypeAttributes.Class);
Type my = tb.CreateType();
tb.SetParent(typeof(OtherClass<>).MakeGenericType(my));
my = tb.CreateType();
}
catch (Exception e)
{
throw;
}
}
but get this exception:
GenericArguments[0], 'MyClass', on 'MyProject.Factory+OtherClass`1[T]'
violates the constraint of type 'T'.
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