Want to win a PS4? Go Premium and enter to win our High-Tech Treats giveaway. Enter to Win

x
?
Solved

Reflection with unknown assembly?

Posted on 2004-10-04
5
Medium Priority
?
535 Views
Last Modified: 2012-06-21
Hi there!
I'm working with System.Reflection. So far it works nicely for dll's, like to invoke a static method:
                        
Assembly assembly = Assembly.LoadFrom(dllName);
System.Type type = assembly.getType(className);
MethodInfo method = type.GetMethod(mName,types);  // types are the types of parameters I'm using
Object myObj = method.Invoke(null,myParams);
...

What do I do though, if I want to call a method of a class not in that dll, but say, for example, in System.IO? That is, I'm calling this reflection method from a different program, and I can specify that I want to use method "getFiles()" in class "Directory" or even class "System.IO.Directory". But of course I don't specify the assembly to use.
Is there a way to do that? Hope my question is clear, if not, please ask...
Thanks!
epaga
0
Comment
Question by:epaga
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 3
  • 2
5 Comments
 
LVL 10

Expert Comment

by:ptmcomp
ID: 12217918
It is definitely possible since there is a program called ".net Reflector" from Lutz Roeder which is doing it. But you must know where your class is located / what assemblies you need to load to create the class. You could of course load a set of assemblies by default but if the class is defined in a different assembly that particular assembly and its dependencies must be loaded.
0
 

Author Comment

by:epaga
ID: 12224146
so say I do know I need "System.IO"...how do I load that dynamically?

epaga
0
 
LVL 10

Accepted Solution

by:
ptmcomp earned 500 total points
ID: 12224594
If you want to use a class that is defined in the System.IO assembly (e.g. FileStream) then you need to load it. You can use Type.GetType(string, bool); to load a type dynamically from an assembly.

Type fileStreamType = Type.GetType("System.IO.FileStream, System.IO");   // classname, assembly name (without .dll)
0
 
LVL 10

Expert Comment

by:ptmcomp
ID: 12224601
You can also load an assemlby and enumerate all the types that it defines.
0
 

Author Comment

by:epaga
ID: 12225089
That's exactly what I wanted to know!
Thanks ptmcomp...
0

Featured Post

Free Tool: Subnet Calculator

The subnet calculator helps you design networks by taking an IP address and network mask and returning information such as network, broadcast address, and host range.

One of a set of tools we're offering as a way of saying thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Article by: Najam
Having new technologies does not mean they will completely replace old components.  Recently I had to create WCF that will be called by VB6 component.  Here I will describe what steps one should follow while doing so, please feel free to post any qu…
This article introduced a TextBox that supports transparent background.   Introduction TextBox is the most widely used control component in GUI design. Most GUI controls do not support transparent background and more or less do not have the…
Video by: ITPro.TV
In this episode Don builds upon the troubleshooting techniques by demonstrating how to properly monitor a vSphere deployment to detect problems before they occur. He begins the show using tools found within the vSphere suite as ends the show demonst…
We’ve all felt that sense of false security before—locking down external access to a database or component and feeling like we’ve done all we need to do to secure company data. But that feeling is fleeting. Attacks these days can happen in many w…

604 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question