Referencing assemblies after loading

[Codeless]

I have a program that loads an assembly into an AppDomain. The part I don't get (yet) is how do I reference any of the classes inside the assembly that was loaded at run-time? Inside this dll is a form that I want to open. Anytime I try to call it from my program I can't because it is not declared. Should I declare it somewhere? Whats the best way to handle this?

[mutant]

If you know the name of the object you can create an instance of it using Reflection:

'Get the DLL
Dim dll As Reflection.Assembly = Reflection.Assembly.LoadFrom("dll path")
'Create an instance of the specified object
Dim yourobject As Object = dll.CreateInstance("type name")

[Drstein99]

I do this exact process, and under "yourobject" which is where createinstance is run, it always waches to "NOTHING".

 

 

Any ideas?

[PlausiblyDamp]

Could you show us some code and give some details about class names / dll names and locations?

[Drstein99]

In the test.dll I have:

 

namespace: Test

Class testInterface

 

I want to load the .dll and access the testInterface class:

 

Dim dll As Reflection.Assembly = Reflection.Assembly.LoadFrom("c:\Test.dll")

Dim yourobject As Object = dll.CreateInstance("testInterface")

[Drstein99]

oh i think i figured something out just now. I have to use "test.testinterface" instead of just "testinterface" where the createinstance command runs:

 

Dim yourobject As Object = dll.CreateInstance("test.testInterface")

[Drstein99]

ok how do i now setup a function to recieve events from this class?

 

I have a sub called "receiveCall", and inside the dll I have:

 

PUBLIC EVENT callReceive (byval pString as string)

 

in my form I have the following:

AddHandler myobject.callreceive, AddressOf ReceiveCall

 

which seems to error out please advise.