Ravi
Thx for the response: I could not see the file you mentioned to unzip from,
so I cannot compare my solution and yours, but I have also played around
over the weekend, and here is my solution: (In my limited test environment,
it seemed to work 100%)
I create a factory type class with the ability to create instances of all
the classes I want to work with from my existing apps. The factory class
has a shared function Init on it which will create a new appdomain, and all
classes created afterwards by the factory class is created inside this
appdomain. A precondition is that the created class (and all the classes
exposed as properties of this class) has to be serializable.
(Note: I got the basic idea from an earlier mail stream to this mail group)
I include the factory class and the calling code
---------- Factory ----------
Imports System.Reflection
Public Class clsFactory
Inherits MarshalByRefObject
Private Shared mobjFactory As clsFactory = Nothing
Private mobjSys As XUserCO.clsSystem 'the root class of my external app:
The one with the public variables
Public Shared Function GetInstance(ByVal pobjdomain As AppDomain) As
clsFactory
Dim lobjFactory As clsFactory = Nothing
If (System.Object.ReferenceEquals(AppDomain.CurrentDomain, pobjdomain))
Then
lobjFactory = GetInstance()
Else
Dim lobjInner As New clsInnerFactory()
lobjInner =
pobjdomain.CreateInstanceAndUnwrap(Reflection.Assembly.GetExecutingAssembly(
).FullName, lobjInner.GetType.FullName)
lobjFactory = lobjInner.GetInstance()
End If
Return lobjFactory
End Function
Private Shared Function getInstance() As clsFactory
mobjFactory = New clsFactory()
Return mobjFactory
End Function
Private Class clsInnerFactory
Inherits MarshalByRefObject
Public Function GetInstance() As clsFactory
Return clsFactory.GetInstance()
End Function
End Class
Public Shared Function Init(ByVal pstrName As String) As AppDomain
Return AppDomain.CreateDomain(pstrName)
End Function
Public Property Sys() As XUserCO.clsSystem' Exposing the root object which
uses public variables
Get
If mobjSys Is Nothing Then mobjSys = XUserCO.clsSystem.GetInstance
Return mobjSys
End Get
Set(ByVal Value As XUserCO.clsSystem)
mobjSys = Value
End Set
End Property
End Class
-------------- Calling the factory
Dim host1 As AppDomain = clsFactory.Init("Test 1")
Dim s1 As clsFactory = clsFactory.GetInstance(host1)
Dim host2 As AppDomain = clsFactory.Init("Second one")
Dim s2 As clsFactory = clsFactory.GetInstance(host2)
s1.UserID = 1
s2.UserID = 2
'If running in the same appdomain, S1.userid will always be equal to
S2.userid: now it aint
lint = s1.UserID
lint = s2.UserID
-------------------
Comments appreciated
JC Oberholzer
|-----Original Message-----
|From: Ravi Pazhani [mailto:[EMAIL PROTECTED]
|Sent: 16 June 2003 03:07 PM
|To: [EMAIL PROTECTED]
|
|quick & dirty one!
|
|create a directory customcontextclient under \inetpub\wwwroot
|extract the files.
|set up a site under defaultwebsite named "customcontextclient" and point to
|\inetpub\wwwroot\customcontextclient folder.
|
|
|open the sln file and run. due to lack of time i am not able create a
|detailed documentation.
|web config file contains necessary entries to add the
|"MyCustomContextModule".
|
|
|for simplicity i have show only one module with all the .net classes in it.
|mutiple httpmodules can be used to create different services and add it to
|"MyCustomContext".
|in that case "MyCustomContextModule" becomes the primary module and should
|appear as first item in web config <httpmodules> section.
|
|
|HTH
|Ravi
|
|
|>From: Edmund Maher <[EMAIL PROTECTED]>
|>Reply-To: "Moderated discussion of advanced .NET topics."
|><[EMAIL PROTECTED]>
|>To: [EMAIL PROTECTED]
|>Subject: Re: [ADVANCED-DOTNET] Process Isolation in ASP.NET
|>Date: Fri, 13 Jun 2003 13:59:02 -0400
|>
|>Ravi-
|> This sounds interesting, could you give an example? I'm trying
|>to develop a logging mechanism and your idea sounds like it would be an
|>approach I could take...
|>
|>Tks-
|>ed
|>
|>-----Original Message-----
|>From: Moderated discussion of advanced .NET topics.
|>[mailto:[EMAIL PROTECTED] On Behalf Of Ravi Pazhani
|>Sent: Friday, June 13, 2003 12:55 PM
|>To: [EMAIL PROTECTED]
|>Subject: Re: [ADVANCED-DOTNET] Process Isolation in ASP.NET
|>
|>
|>One common approach is to create custom HttpModule and inject a custom
|>context to the application. This custom context can host all the
|>services you want to provide to the application. All the services that
|>are embedded inyour context are available to all the classes of your asp
|>.net app. This approach not only provides enough isoloation from the
|>application code but also easily configurable.
|>
|>HTH
|>
|>Ravi
|>
|>
|>
|>
|> >From: JC Oberholzer <[EMAIL PROTECTED]>
|> >Reply-To: "Moderated discussion of advanced .NET topics."
|> ><[EMAIL PROTECTED]>
|> >To: [EMAIL PROTECTED]
|> >Subject: [ADVANCED-DOTNET] Process Isolation in ASP.NET
|> >Date: Fri, 13 Jun 2003 10:10:13 -0400
|> >
|> >I need some help on the following: My class library (dll) uses a
|> >variable declared as public in order to share central information to
|> >all classes in the application (such as connectionstring etc). This
|> >works fine with WinForm apps using the class library, as one instance
|> >of the public variable exists per appdomain.
|> >
|> >I need to use the same class library for an ASP app as well, and this
|> >is where I need some help : How to get the ASP app to instantiate one
|> >instance of my public variable per user session:
|> >
|> >I have played around a lot with createing serializable classes and
|> >creating my own appdomains, but my solutions are not very ellegant, adn
|>
|> >I reckon I can surely not be the only guy to have run into this issue.
|>
|> >? Is there any way to just "configure" my way out of this? (would be
|> >the first prize), or any other relatively easy way to get around this
|> >issue?
|> >
|> >Thx
|> >
|> >JC Oberholzer
|> >
|> >-- Technical info: Each of my class libraries always has a class
|> >clsSystem, with private constructure and a shared function GetInstance
|> >which is used to ensure I have only one onstance of my public variable
|> >in the app
|> >
|> >public class clsSystem
|> >..
|> > Public Shared Function GetInstance () as clsSystem
|>
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