reference to classes in another namespace

Hi,

I am new to c# so far so good. But I got stuck. I am creating a class library. Some of the methods in a class need a reference to an instance of a class in another namespace. I cannot simply add a reference to this namespace in the project because at runtime this namespace will be dynamically created. I do, however, know what the classes in this namespace look like.

I tried something like this:
[code]

Code:

---

public Type uClass;
...

Assembly *** = Assembly.GetExecutingAssembly();
foreach (Type type in ***.GetTypes())
 {
        if (type1.IsClass){
              if (type1.Name == "myclass"){
                    uClass =  type1;
              }
        }
 }

---

But then, when I use uClass I get the error message:

" uClass is a 'field' but is used like a 'type' "

What goes wrong here? Or is there a much better way to do what I am trying to do? I mean, the next step is getting access to all the properties in this class. How would I do that?

Hope someone can get me back on track,

Thanks!

Obviously the part

Assembly *** = Assembly.GetExecutingAssembly();

should reference the other assembly!

If you need create an instance, use Activator.CreateInstance(uClass). But to call methods or access properties on the instance, you have to use reflection. To avoid it, make the classes in the assembly to derive from a common base class, or better implement an interface, and cast the result if Activator.CreateInstance() to that type.

Thanks Boudino, I am not really that much familiar with what you are saying. But I do not want to create an instance of the class in the other namespace. I want to reference instances of that class and get access to their properties and methods.

I belief I have to follow the reflector route. I did search and found out about reflector. Hence the code I posted but I didn't find any clear examples of the correct syntax for what I am trying to do neither did I find info telling more about the error message I am getting,

" uClass is a 'field' but is used like a 'type' "

The classes that I want to include in the class library are now part of the other namescape and all works fine but I want to seperate them. A very simple example of what I need to be able to do is this

Code:

---

void UpdateSettings(uClass inst){
    Console.WriteLine( inst.totalRate );
}

---

uClass is no longer part of the same namespace so obviously it is not recogniozed. How do I get this to work when I cannot put a reference to this namespace in the project but I do have access to the corresponding assembly at runtime?

Is this possible at all?

All info I found so far about reflection is creating a new instance of a class using reflection.

if I do

Code:

---

    Type uMyClass;

    foreach (Type type1 in asm.GetTypes())
    {
        if (type1.IsClass){
        if(type1.Name == "MyClass"){
                uMyClass = typeof(type1);
        }
        }
    }

---

I get the error:

The type or namespace name `type1' could not be found. Are you missing a using directive or an assembly reference?

What problem are you trying to solve by dynamically creating namespaces at runtime?

That is not what I want to do but that is how the software works I want to use this class library in. My "public" c# scripts with the classes I need access to are part of that namespace.

Quote:

---

Originally Posted by safra

That is not what I want to do but that is how the software works I want to use this class library in. My "public" c# scripts with the classes I need access to are part of that namespace.

---

What problem are you trying to solve by dynamically creating namespaces at runtime?

My classes in the dynamically created namespace have to be part of that namespace otherwise they cannot be used in this 3rd party software. Not sure though if that is what you meant by repeating your question?

Quote:

---

Originally Posted by safra

My classes in the dynamically created namespace have to be part of that namespace otherwise they cannot be used in this 3rd party software. Not sure though if that is what you meant by repeating your question?

---

I repeated my question because it didn't look like I was getting a response.

Honestly it still isn't really clear why you need to dynamically create a namespace. If the namespace needs to match the 3rd party dll, don't you already know what the namespace needs to be?

Quote:

---

Originally Posted by Arjay

Honestly it still isn't really clear why you need to dynamically create a namespace. If the namespace needs to match the 3rd party dll, don't you already know what the namespace needs to be?

---

I never have heard about a possibility to dynamically add a reference to a namespace.
because if you dont know the namespace a then you also would not know the classes names and properties, so what would you want to do with that classes? Its useless to set any unknown Property without knowing its purpose. So your whole request is a bit of unclear. What do you want to do with all that.? Whats the purpose of the whole application? And which problem are you trying to solve that way?

The 2nd dynamically created namespace is created by the third party software and it includes runtime classes of this 3rd party software plus some of my classes that have to be in this dynamically created namespace.

Why are they creating the namespace dynamically? Because the software allows their users to add c# sharp scripts which is what I do. Each time I update a script in the third party software it is compiled and a new namespace is created.

What you're describing sounds like an incredibly insane system. It also makes next to no sense. Take a step back for a sec and forget about namespaces. What it sounds like you're trying to describe is a normal plugin like system where arbitrary third party libraries can be loaded by your program and executed. Is this the case? If so, how does the main application know what to load in the third party library? Is there a specific interface/class which the third party library must implement?

What is it you're trying to do exactly? So we go right back to this question:

Quote:

---

What problem are you trying to solve by dynamically creating namespaces at runtime?

---

But i'd also add in: Why do you even care what namespace something is in? What's the high level task you're trying to accomplish? Is it:

1) Find class X which implements interface Y.
2) Instantiate it.
3) Use it.

Or is it something a lot more complex, or just something completely different?

or just BAD (as in AUP?)

dynamically generated class library by the software itself:

Namespace1

This Namespace includes the software runtime classes and Class1 which is a script added by me.

My class library:
Namespace2 with class2 with method

public void Method1(Namespace1.Class1 instance){
...
}

I want to use instances of a class in the dynamically generated library in my class library.

Quote:

---

What it sounds like you're trying to describe is a normal plugin like system where arbitrary third party libraries can be loaded by your program and executed. Is this the case? If so, how does the main application know what to load in the third party library? Is there a specific interface/class which the third party library must implement?

---

Can you answer those questions? Otherwise my answer is: It's impossible, you may as well give up now.

I must do a terrible job of explaining or I don't get it ;)

Quote:

---

What it sounds like you're trying to describe is a normal plugin like system where arbitrary third party libraries can be loaded by your program and executed. Is this the case? If so, how does the main application know what to load in the third party library? Is there a specific interface/class which the third party library must implement?

---

The main application is the dynamically created namespace which is created after changes in my scripts that will part of the main application. My scripts in the main application obviously can access the classes in the 2nd namespace I am working on as the main application can load other class libraries. So I can pass a reference of the dynamically generated assembly.

The third party software I was referring at in the beginning is the main application.

So the question is can I use instances of a class in my script in the main application from my own class library as per the code example in my previous post?

Quote:

---

I must do a terrible job of explaining or I don't get it

---

Possibly the latter ;)

It's impossible to instantiate an arbitrary class from an arbitrary assembly and do something useful with it. That's true for every programming language and set of libraries. What you are describing just does not make any sense whatsoever.

Code:

---

public class X
{
    void A ();
    int B ();
    bool C ();
    X D ();
    R Q ();
}

---

Tell me what the above class does and then use it to do something useful. Based on your explanation, this is what you're trying to do. As you can imagine, if you can't tell me what the above class does then how could a program figure it out and use it.

So if you can't answer the questions in my last post, it's impossible and you'll have to completely redesign your system.

What 3rd party software are you using? Is there online documentation for us to look at?

Quote:

---

Originally Posted by Mutant_Fruit

Possibly the latter ;)

---

Probably both! ;)

This is about www.unity3d.com. They have a free version. We are about to outsource some work that uses custom editor scripts we made. We don't want to make it too easy to access the source of the scripts so we like to put as much as possible in another class library.

I doubt whether you will find info about all of this in the documentation though! The software allows you to drag scripts (a specific class) on 3d objects to control their behaviour. These are the instances I need access too. Unfortunately it is not possible to attach scripts from another class library to these objects.

Unity is pretty well documented so definitely check there first. If it's not mentioned in their docs, check the unit scripts wiki and finally you could post on their forums. If you can't get the info there then no-one knows the answer ;)

This is probably what you're looking for: http://www.unifycommunity.com/wiki/i...tle=Extensions