Unload a Assembly ( dll )

[ths]

Hi,

How can i do to unload a assembly (.dll) ?!?!
I am trying to use AppDomain but i have no progress,
because the main appDomain load the assembly too when the appDomain loads the assembly

 

[Derek Stone]

http://www.visualbasicforum.com/showthread.php?s=&threadid=37362

 

[ths]

I see that . ..

Hi,

I see that post

But he dont help me much

The problem is that when a appDomain, part off main AppDomain, loads a dll the main AppDomain loads the dll too

Look this

------------------------------ cut here ----------------------------------

Public Sub Load(ByVal libraryName As String)
Try
Dim cont As Long
Dim controleDomainApp As AppDomain
If Dir(System.Environment.CurrentDirectory & "\" & libraryName) <> "" Then
For cont = 1 To colecaoNomesDLL.Count
If colecaoNomesDLL(cont) = libraryName Then
Exit Sub
End If
Next
colecaoNomesDLL.Add(libraryName)
Dim setup As AppDomainSetup = New AppDomainSetup()
setup.ApplicationBase = System.Environment.CurrentDirectory
setup.PrivateBinPath = AppDomain.CurrentDomain.BaseDirectory
setup.ShadowCopyFiles = "false"
setup.ShadowCopyDirectories = libraryName
controleDomainApp = AppDomain.CreateDomain(libraryName, Nothing, setup)
controleDomainApp.Load(System.Reflection.AssemblyName.GetAssemblyName(libraryName))
colecaoAppDomain.Add(controleDomainApp)
End If
Catch err As Exception
tratadorErro.trataErro(err)
End Try
End Sub


------------------------------ cut here ----------------------------------


When the appDomain created loads the dll the main appDomain loads the dll too. I dont need this. I like that main appDomain uses the dll loaded by the appDomain created

Any sugestion ?!?!?

 

[Thinker]

What does this line do?
colecaoNomesDLL.Add(libraryName)
I cant see what colecaoNomesDLL is declared as.

Is it just a collection object?

 

[ths]

Unload a dll

Hi

yes

Its a collection object

colecaoNomesDll is a private object, that contains the names of all dlls that are loaded by the class

So when I need to unload the dll i know if it is loaded or not, and i can know its identifier in the collection

I am trying to create a class that loads and unloads dll

Can you helpme ?!??!?!?

please

 

[Thinker]

I dont know if this is what is happening to you, but here is what
MSDN says...

If an assembly is used by multiple domains in a process, the assemblys code (but not its data) can be shared by all domains referencing the assembly. This reduces the amount of memory used at run time. ... An assembly is said to be domain-neutral when its code can be shared by all domains in the process. The runtime host decides whether to load assemblies as domain-neutral when it loads the runtime into a process.

You might be able to force this by setting the LoaderOptimization
member of the AppDomainSetup to a LoaderOptimizationAttribute
object with the value of SingleDomain. Maybe...
setup.LoaderOptimization = SingleDomain
The only reason I can see for loading dll assemblies into other
domains is so that they can be unloaded by unloading the domain.
Are you unloading the domain somewhere else?

 

[ths]

Hi

What I have to do this that you say . . .

"The only reason I can see for loading dll assemblies into other
domains is so that they can be unloaded by unloading the domain."

. . . I want to unload a assembly unloading a domain

I Really need to do this.

I can load and unload a assembly in a domain
But, when I load the assembly in the appDomain created only to load the assembly my main domain loads the assembly too . . .
In other words . . .
I load the assembly two times
One in the domain created
And another in the main domain

What can i do to load the assembly one time and share this assembly to all domains that needs this assembly ?

I want this . ..

"An assembly is said to be domain-neutral when its code can be shared by all domains in the process. "

I try to use the LoaderOptimization = SingleDomain
But i have no success . . .

So

Any sugestion ?!?!