How to detect if a Type is a generated DynamicProxy without referencing Castle DynamicProxy?

Question

I am using castle DynamicProxy and was wondering if there is a way of detecting if a Type is a proxy without referencing Castle DynamicProxy?

So while I am using Castle DynamicProxy as an example I would like code that would work for any in memory generated type.

var generator = new ProxyGenerator();

var classProxy = generator.CreateClassProxy<Hashtable>();
Debug.WriteLine(classProxy.GetType().Is....);

var interfaceProxy = generator.CreateInterfaceProxyWithoutTarget<ICollection>();
Debug.WriteLine(interfaceProxy.GetType().Is....);

Thanks

Answer 1

so far i have this fugly code

    private static bool IsDynamic(Type type)
    {
        try
        {
            var location = type.Assembly.Location;
            return false;
        }
        catch (NotSupportedException)
        {
            return true;
        }
    }

Answer 2

type.Assembly.FullName.StartsWith("DynamicProxyGenAssembly2")

Answer 3

You could make your dynamic type implements a specific interface:

public interface IDynamicProxy { }

...

ProxyGenerator generator = new ProxyGenerator();

var classProxy = generator.CreateClassProxy(typeof(Hashtable), new[] {typeof(IDynamicProxy)});
Debug.WriteLine(classProxy is IDynamicProxy);


var interfaceProxy = generator.CreateInterfaceProxyWithoutTarget(typeof(ICollection), new[] { typeof(IDynamicProxy) });
Debug.WriteLine(interfaceProxy is IDynamicProxy);

Answer 4

This seems to be working for Castle:

private static bool IsDynamic(Type type)
{
    return type.Namespace == null;
}