have created a new AppDomain with a unique name. But i do not want to store that name during the whole application runtime.So i ask you guys if it is possible to get that created AppDomain by name back.
Sub Main()
AppDomain.CreateDomain("TestDomain")
End Sub
so How do i get the AppDomain with the name "TestDomain" back so i can unload it later without storing that AppDomain globally?
What is AppDomain.CreateDomain
View 2 RepliesI have an ApDomain that is running a Main Routine, for example:
Public Sub Main() Implements Interfaces.IScript.Main
For a as Integer=1 to 99999
[Code]...
Can you have more than one AppDomain in a process Or more than one process in a AppDomain? What about threads? I was always told there were many threads in one process and one processor has many processes. How does App Domains fit into this picture?To me, it seems like its the same concept with a different name??
View 1 Repliesthe forum,this is my first message, and I hope that my English is understandable (I'm Italian)....I've developed a WIndows Service using VB.net 2.0; this service executes a routine every 4 hours... I would like load a dll (without entry point) at run time and when the operation is terminated, I would like unload that. I think that I've to create a new AppDomain and to load my DLL into this, but I don't know the good way to do it.
View 9 RepliesFirst, I changed my ILS function to be simply: Public Overrides Function InitializeLifetimeService() As Object Return Nothing End Function
Then I included this in my Program as well as A. As Timiz0r pointed out, Form inherits MarshalByRefObject, so I didn't have to include a Inherits statement on my main class (which already inherited Form). This was the big thing, because I didn't include it originally. Next, I changed my AppDomain setup to be:
Dim _ADomain As AppDomain = AppDomain.CreateDomain(Name)
Dim item As New A
item = CType(_ADomain.CreateInstanceAndUnwrap(GetType(A).Assembly.FullName, GetType(A).FullName), A)
With these changes I can now use separate instances of the DLL COM object as desired.
Original Question I am writing an application that creates a list of objects, each referring to a DLL, and each object placed in its own AppDomain to keep the instances of the DLL from interfering with each other. Taken another way:Program maintains a List(Of A)A is created as an instance of AppDomain using CreateInstanceAndUnwrap Each A refers to mirror.dll, which is including in the application's references
[Code]...
I keep getting a "System.Runtime.Serialization.SerializationException" in my application while loading a not-defined assembly (AKA: Plug-in loading.)Even if I turn Serialization on for that plug-in, then it will fail once again. I've been looking around and couldn't find a good tutorial about it..
So all together: How to load an assembly using AppDomain?
I have done a lot of research on the memory leaks present in the WebBrowser control, and the following thread (http:url]...) told me that the only real way to reclaim the memory eaten up by WebBrowser is to load the control in a separate appdomain.I went ahead and did this, but when I unload the AppDomain that the WebbBrowser is created in (using AppDomain.Unload()), the memory is still not freed. I am looking at the Private Bytes of the process in Task Manager (which is accurate and what I'm interested in) to confirm this. The memory usage stays at 50MB+ instead of its default 5MB.Here is my code:
Form1.vb
Imports System.Reflection
Public Class Form1
Private ad_WBInst As AppDomain[code].....
I'm kinda new here, and I didn't know what forum to put this in, so I just put it here. I wanted to load an assembly to an Application Domain, use it, then unload it when I'm done with it. The assembly uses too much memory. The problem is: After I unloaded the assembly, the memory used is not getting freed. I was watching the performance all the time. The available memory increases only after I close the whole application. And that assembly is the only thing that uses a lot of memory in my application. Here's the code I used to load and unload the assembly: How can I free up the memory without closing my application. The memory was suppose to get freed up by simply unloading the assembly that uses it much.
View 2 RepliesI have an Addin for MS Excel which needs a singleton to share data amongst modules.Depending on the version of Excel (2003, 2007, 2010), and how Excel was started, it calls my addin from different, unpredictable AppDomains, which prevents the classic singleton approach.Creating a custom AppDomainManager won't work because Excel has already created the AppDomains before the addin is called.
Linking to mscoree to enumerate domains breaks the addin registration process (and I really don't want that anyway); there doesn't seem to be any other way of enumerating, so that isn't an option either.The only solution that I've found is to use remoting. Here's my test rig:
Imports System.Runtime.Remoting
Imports System.Runtime.Remoting.Channels
' Remeber to add reference to System.Runtime.Remoting DLL[code].....
Once everything is running, access to the singleton takes ~100µS, which is perfect. I can live with the ~400mS the first time each AppDomain is initialised. The problem is at startup, where the remoting invocation takes ~2.5 seconds.
I need to get the information of all the appdomain created in given process?
View 4 RepliesI have a service application that randomly stops without any errors in my log or in the event application log. I believe that there could be an unhandled exception somewhere in the code so I set up the AppDomain.Unhandled event to catch any exceptions. While trying to induce unhandled exceptions I have found that this event is not always fired. I added the following code to my service's Shared Sub Main method (but I orginally had it in the OnStart method and was seeing mostly the same thing)
Dim currentDomain as AppDomain = AppDomain.CurrentDomain
Add Handler currentDomain.UnhandledException, Address of MyHandler
Is it possible to handle exceptions on the AppDomain.CurrentDomain.UnhandledException callback? I want to do the following:Show my own "an exception hasoccured" dialog, with a "Send Report"button After the user dismissed thebox, I want to close my app, but I donot want to Windows default crash dialog "Theapplication needs to close" box toshow up.
View 2 RepliesI have created an application domain, using which i am executing an .exe file.So the command window does open which has the title as file name. I want to hide the command window.
Dim newAppDomain As AppDomain = AppDomain.CreateDomain("", AppDomain.CurrentDomain.Evidence, AppDomain.CurrentDomain.SetupInformation)
newAppDomain.ExecuteAssembly(IO.Path.Combine(Offic eAddInConfig.Instance.BinPath & "Core", "file1.exe"))
Here a command prompt will be opened which need to hide.
how to create a stable plugin architecture. Stable because I plan on opening up plugin creation to the public but I dont want a sloppy coded plugin to take down my whole application.
So I thought of using an AppDomain per plugin and I did a little seaching. But it seems that even using a temp AppDomain to load plugins and then unloading it once all assemblies have been inspected raises complexity allot and I was planing on using an AppDomain per plugin.
I feel the gained stability (if there is any at all) may be raising the complexity so much the app will never be done..
Is there another way to both create a stable application and at the same time making it extensible?
I cases where the host calls a defined function via say IPluginInterface I guess I can pack a whole lot of try catch blocks around that call but what if a plugin insisted of a timed routine that would run continously without being invoked from the host other that a starting call to StartPluginService or something like that?
If I include a plugin like that in the default AppDomain and it blows up I sure will blow my own foot off right?
I'm in the process of trying to create a new appdomain to load plugin dll's, then unload the new appdomain so I can update the plugin dll's without having to exit the main application. There are many, many examples out there and it looks like it should be fairly straightforward, however I'm having a problem where the main application is loading the plugin dll's along with the new appdomain. Of course this is a problem because I cannot overwrite the plugin dll's if they live in the main appdomain. Based on the examples I've seen the code below should only load the plugin dll into the new appdomain, however for some reason it also loads into the main appdomain.
Dim oDomain As AppDomain = Nothing
Dim oSetup As New System.AppDomainSetup()
With oSetup
[code]....
The IDPAPlugin interface is in a seperate project that both the plugin dll and the main application reference.
Is it possible to read the GUID from the Assembly without actually loading it in the current App Domain.
Normally Assembly.Load loads the DLL into the app domain. I just want to read the value. The description of the GUID is
'The following GUID is for the ID of the typelib
' if this project is exposed to COM
<Assembly: Guid("DEDDE61CD-928E-4ACD-8C25-3B8577284819")>
The main thing is I don't want to lock the file so that there are no errors 'Another process is accessing the file' error.
I published my VB 2008 Express application and installed it on a test computer. The test computer has .NET 3.5 on it, but does not have any Visual Studio development programs on it (I think this is the best way to really test it before sending it to other users. It works fine.The application reads some data from a text file. Every few days, I need to update this text file and send it to the user. (I do not want to republish everything, and I do not want to run a web server.) I naively (??) designed things so that this would be done by attaching the new text file to an email and sending it to the user. The user would simply (?) save this attachment to the same directory as the .exe was in (the application directory). In the old days, there would have been an .exe file in some folder like c:Program FilesDavewareMyprog.exe. And my .txt file would be right beside it.In the code, I have used
System.AppDomain.CurrentDomain.BaseDirectory() & "MyDataFile.txt"
in various places where I use a Streamreader and Streamwriter to access it. But I've now sent an 'update' email with the .txt file to the test computer, and proceeded to save the attachment, and then realized I'm stuck. I can't find any directory that looks like it might be a good old application folder. In fact, there are references to my application all over the place, in very ugly looking paths.Now I think I'm in trouble as I read the MSDN on BaseDirectory, which starts out:"Gets the base directory that the assembly resolver uses to probe for assemblies".Is there any way I can do things as I designed it? I can think of some work arounds, like try to hard code some folder off c: that has nothing to do with where the .exe is etc, but putting it in the 'application folder' seems so much easier and wouldn't require knowledge of which drive the .exe ended up on etc. on the user's computer.
I am currently using the code below within a VB.Net application to find specific text in a Word document. The text is surrounded by symbols represented by the character codes in the .Text statement. The code below is working fine. The issue now is that sometimes the desired text within a document has been marked for deletion and appears as tracked change within the document. I would like to find only the desired text that has NOT been marked for deletion. Does anyone know of a way to determine if the found text is a deletion?
[Code]...
I have been trying to find the last filled column row in a sheet using this.
clast = xlapp.ActiveSheet.Cells.Find("*", SearchOrder:=XlSearchOrder.xlByColumns, SearchDirection:=XlSearchDirection.xlPrevious).Column
rlast = xlapp.ActiveSheet.Cells.Find("*", SearchOrder:=XlSearchOrder.xlByColumns, SearchDirection:=XlSearchDirection.xlPrevious).Row
I've got a form - CMCConsole It pops up a dialog form for adding a new case.If the matter number in a textbox on that dialog form matches an existing cases matter number I would like to find it in the binding source of the CMCConsole form
Private Function CheckMatter(ByVal MtrNum As String) As Boolean
Dim cfIndex As Integer = CMCConsole.caseBS.Find("MatterNumber", MtrNum)
Dim cfIndex2 As Integer = CMCConsole.casefileBS.Find("MatterNumber", MtrNum)
[code]....
But it appear the filter for the CASE we were just on that is set on the binding source is keeping the FIND from seeing other cases.
caseBS.Filter = "CaseId=" & e.Node.Tag.ToString
Do I have to clear the filter in order to find a matter number in some other case??
how to search xml file and display the result in list box.then export a xml file to excel in the search result
View 4 Replieshow can you create find & find next (using tooltip menu) create in vb.net for datagridview value.
View 1 RepliesI have a TypedDataTable called CamerasDT which has a composite Primary Key of GroupId and CameraId. I want to use TypedDataTable.Rows.Find(key as object) to return a specific row by GroupId and CameraId. I don't seem to be able to find a way to send primary key to the find function.
View 1 RepliesI have a rich text box with the following text in it:
word word
I am finding the endings of the word, that is, the string "rd". The following code finds the first occurance, but then fails to find the last occurance, and the variable "indexToText " changes to -1.After the first search, the debugger shows the startLocation at character position 4, so it is not past the second occurance but still will not find it.
indexToText = FrmMain.RichTextBoxPrintCtrl1.Find(searchValue, _
startLocation, eof, RichTextBoxFinds.None)
If I change the text to:
word word word
It then finds the first two occurrences and fails to find the last occurrence.No matter how many words I add, it always fails to find the last occurrence.
I am suppose to only Find the total of each column in the last row. Find the grand total in the last cell (the bottom right corner)Ok i have tried to do the grandtotal but i am not getting what she wants done I have also tried to reverse the arrays but that was wrong to. I am only suppose to add two line one line is find the total of each colums in the last row and to find the grandtotal.
Module Module1
Sub Main()
Dim sum(5, 4) As Integer
Dim row, col As Integer
[code]....
Windows Form I have a textbox when I enter DOB in the textbox the Age should appear respectively .[code]...
View 2 RepliesI've been trying to get the IPs (or computer names) of the computers in the same network as the computer running the program.
I got as far as getting all the IPs of the servers in the network wich ended up in a dead end since its all the computers that i need and not the servers only.
My goal is to get acces to files on all the other computers, i guess a shared folder would do the work and just access it as a regular folder, but for that i need the computer name (wich i can get through his IP)
Basicly, I need to find the ips of all computers in the same network wich is not what i get right now...
Dim localIP() As System.Net.IPAddress = System.Net.Dns.GetHostAddresses(System.Net.Dns.GetHostName)
Dim strLocalIP As String = localIP(0).ToString
[Code].....
Yes I Was wounder How Would I use System.Net.Sockets To Find my IP And Then In A Separate code How Would I Make an IP changer What Im I making?: Im Making A Program That Tells You Your IP..and then There Will Be an Option To Change It If anyone no's about Computers I Want to No Y when I made An IP Thing in VB6 (using Winsock) That It Shows Me a Different [URL]..
View 9 RepliesHow to find the value of Pi using VB or C? and i want to calculate the values until a millionth or more than that where in i can use the values of the obtained in another program. fir example in a encryption program.
View 8 Replies
