CODEWITHSUNDEEP
c#.netreflectiondynamic
user686661
user686661

Reputation: 29

Dynamic casting and message type

I have this object that I'm serializing and sending to a server over TCP/IP and I need to deserialize it and fire it off in a message of the right type. I'm using .net 4.

The problem is that the object could be of several different types and the messenger needs to know the type of what it's sending. What I want to do is to send a string or Type object along that will specify what the main object's type is. Right now I'm doing this, but it only works for one type:

public void generic_Obj(Object obj)
{
     //Entity is a class that I define elsewhere
     //I'm using the Galasoft MVVM Light messenger
     Messenger.Default.Send<Entity>((Entity)obj, "token");
}

I want to do something like this using reflection:

public void gen_Obj(Object obj, Type genType, string token)
{
     //this doesn't work btw
     Messenger.Default.Send<genType>((genType)obj, token);
}

I've tried all different methods of dynamic casting and such using reflection, some of them worked, but my real problem is finding something to put in between those <> brackets in the messenger call.

Upvotes: 2

Views: 384

Answers (2)

jbtule
jbtule

Reputation: 31799

You can also do this in .net 4 using the dlr instead of reflection. The opensource framework Impromptu-interface has a helper method that makes it easy.

public void gen_Obj(Object obj, Type genType, string token)
{
     Impromptu.InvokeMemberAction(Messenger.Default,"Send".WithGenericArgs(genType),obj,token)
}

Upvotes: 0

Reed Copsey
Reed Copsey

Reputation: 564323

If you generate a MethodInfo for the Send method using reflection, you can use MethodInfo.MakeGenericMethod to create the method with the specific type defined by genType.

Once you've done that, MethodBase.Invoke can be used to call the method with your arguments.

Upvotes: 1

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