Hi, I was wondering if I can use static methods in a class that derives from the ServicedComponent. The expected callers of my class will be only other .NET clients and the static methods require COM+ services such as support for automatic transactions. What are the restrictions or recomme...more >>

Hi! I want to use a serviced Component using JITA and Object Pooling as a server activated remoting component, as ServicedComponent inherits MarshalByRefObject. As the Component uses JITA and Object Pooling, it's stateless. I'm wondering, wheter I should export it as a "Single Call" or a ...more >>

Hi, I have a certain problem & looking for some suggestion please: 1. I created DLL (Class Libraries Managed code)using VB.NET which are deployed onto the client. 2. If the client encounters a problem, in order for them to realize if it was a problem with the DLL or their coding they ask for t...more >>

We have a situation where object pooling may be used or not and it will be decided by the machine on which our serviced component is installed. The documentation for ObjectPoolingAttribute indicates that if a serviced component is stamped with this attribute, it should not be unchecked in COM+ ...more >>

What is the difference between AutoComplete attribute and ContextUtil.DeactivateOnReturn method? I would like to use AutoComplete. However I want to find out if stamping a method with AutoComplete is less efficient than calling DeactivateOnReturn method when using non-transactional serviced comp...more >>

Hi, I'm a bit confused over how transactions work with managed code components and .Net COM+ components. All papers and postings I've found say that if a .Net Serviced Component calls a non-serviced component any transactions will be ignored started from the serviced component. However, t...more >>

I'm a dotnet newbie and have been developing some web applications in asp.net. I have a requirement to load files from a remote file cache server (many of them actually) to a web image viewer. The files can be sensitive and because of that I can not use a virtual directory to access them. A c...more >>

Short Question: Is there any way to shut off the "DCOM optimization" that is used when making a remote call from a .NET client to an ServicedComponent? Longer Version: From the recent MSDN article (http://msdn.microsoft.com/msdnmag/issues/04/03/ExceptionsinCOM/default.aspx ) and from a blo...more >>

Is it possible to throw a custom exception from the constructor of a com component? I always get an Invalid Pointer exception when I throw from the constructor. Anywhere else, my custom exception comes through fine. -- Chris ...more >>

Does anyone know how to programmatically configure the Application Root Directory for a COM+ 1.5 Server Application in .NET (VB or C#)?? I came across a great blog explaining how to use a config file by specifing the the application root directory and then just ensuring that a manifest file an...more >>

First I am a COM+ newbie. 1. How can I access COM+ applications from ASP.NET? 2. Why use COM+ instead of a web service, transactional support? Thank In Advance. ...more >>

Hi, how I can assign a config file to my COM+ assembly. The problem is that COM+ assemblies are DLLs and *.config files are asignable only to EXE files. I'd like to use the config file for trace listeners and <appSettings>. Best regards, Torsten ...more >>

I am doing some database work, nothing fancy, just creating som new rows and stuff. When I get this error. Distributed transaction completed. Either enlist this session in a new transaction or the NULL transaction Exception Details: System.Data.SqlClient.SqlException: Distributed transacti...more >>

Hi. I asked this one before without any response, but I'll give it ago. In Commerce Server they have a pipeline editor which runs a series of components, the main drawback is that it doesnt support strong names or any web-interface programming, so changes need to be made from the admin uti...more >>

Hi, Can anyone tell what the different between Diabled and Supported is ? Both start no transaction but can use the caller's transaction - But I don't see any differences ... Thanks and Best Regards, Manfred ...more >>

How do I use a combobox in a propertygrid without using enum ? Any suggestions? ...more >>

Is it possible to get a DataReader object from a DataSet ? If so would it be disconnected ? in other words could I return a populated DataReader object from a class that contains a DataSet ? ...more >>

I have developed a simple COM+ Component that I´ve enabled Object Pooling on. It works just fine except that it doesn´t execute Dispose or Finalize when the COM+ Application is being shut down. What do i have to do ? The class inherits ServicedComponent by the way. Niklas Manacore Softwise ...more >>

Is it possible for classes to have a config file like app.config ? I require something like this to store a value that is used in many of my classes but that value changes from development to live. Obviously when deploying to live i do not want to go through all my classes changing this value ...more >>

Does anyone have the vb code to use this function I have found the API import for this but not the layout of the structures that need to be passed to the routine. I'm also looking for vb versions of - CreateWindowStation - SetProcessWindowStation - CreateDesktop - SetThreadDesktop - GetGUIT...more >>

What is the best way to bubble errors up from a component/class to the client application ? I cannot seem to find a 'raise' event as in VB. I am looking for something like the following: try { // Do Database Connectivity Here } catch (SqlException ex) { // Raise the error numbe...more >>

I'm trying to write a COM component in C# that is then accessed by VBScript. Furthermore, I would like a method of this COM object to return an array of Int32s. I've gotten everything working, except that the items in the array are unusable. If I call IsArray on the return value, it returns T...more >>

Hello, We have a question about the transactionshandler in COM+ We have transaction-objects like [TransactionAttribute(TransactionOption.Required), JustInTimeActivation()] public class BookTransaction : ServicedComponent [TransactionAttribute(TransactionOption.NotSupported), JustInTimeAc...more >>

Hi all, I have a application developed in C# .net. The problem I face is I am unable to shutdown my machine when the exe is running. Windows is unable to close this exe an shut down. Can anyone help. Regards, Kuldeep Pawar Programmer, Maximize Learning, Pune. www.maximizelearning.com ...more >>

I want to use a dotnet dll in VB6 . This gives error.Page fault in VBA6.dll, and says that the it has performed an illegal operation. How can I fix this?? ...more >>

I'm trying to pass a class as a parameter to a method on a transactional component and I keep getting this error: An unhandled exception of type 'System.Runtime.Serialization.SerializationException' occurred in system.enterpriseservices.dll Additional information: Cannot find the as...more >>

Hi all! I've been playing a bit with Component Designer in Visual Studio.NET. Seems to me like a great way to build simple data access components using "point and click". However I can't figure out how to make a component made this way into a component with transactional support which can be p...more >>

Given two transactional .NET Classes inherited from ServicedComponent: Class A Function_A1 connects to database A delete table A11 update table A12 Function_A2 ...... Class B Function_B1 connects...more >>

Hello i have a COM that is called inside an ASP page i DON'T SEE nothing in the Component Services console under "View Status": there are not statistic values my COM just make a connection and then a recordset, there is no transaction in the COM, its simple... should i see in the ComSvc Cons...more >>

Hi Anyone know a good source for 3rd party .net components. Specifically I'm looking for a library that converts word documents to PDF. Thanks for your help Good luck ...more >>

Hello I'm running Win Xp Pro SP1, IIS 5.1 Every asp or aspx page returns "Server Application Error". and I can't open Component services from administrative tools. The error message is "DTC was installed by the SQL server. Please Reinstall!" I had SQL server 6.5 installed on my computer. ...more >>

Hi, How could i sort a datatable in web service side. I tried following but didn't work. dataset1.datatable1.defaultView.Sort()="column_name" ...more >>

this happens when serviced component A calls into serviced component B if 1) both A & B are set to transactin required 2) A & B reside in two different machines I logged that the call to constructor A takes place and to constructor B takeplace as well .. and activate take place as well .. but...more >>

hi all SORRY FOR CROSSPOSTING: i did not know which group deals with this question! Question: i am looking to call the following function, ASYNCHRONOUSLY: Packet p = (Packet)this._BinaryFormatter.Deserialize(this._Stream); Can it be done? assaf ...more >>

Hi. When I run regsvcs to register my component it generates a tlb file. What is the purpose of this file? Can it be deleted? TIA, Erik Cruz ...more >>

hi, if dotnet exe applications A, B and C are running as separate process each (separate exe process in windows), i want to reference/use an object from application A's appdomin in application B and C. can anyone help in the above scenario? is it possible in dotnet? TIA qpro ...more >>

When I call a transactional ServicedComponent (Transaction: required) - let´s call it CompA - from a non transactional ServicedComponent (Transaction: Not Supported) - let´s call it CompB -, the tx. component does everything, and it seems as if it had just finished (the counters on the COM conso...more >>

Let's say I'm using the following pattern for my ServicedComponents No object pooling and JITA turned on If I use the following patterns do I need to call Dispose? Transactional components always calls SetComplete or SetAbort Non-transactional components Always calls DeactiveOnRe...more >>

Should ya or shouldn't ya???? ...more >>

Hi. I think I have a very basic question. I tried the COM+ help but could not find information about the meaning of the different icons COM+ applications can have. Where can I find something about it? Thanks, Robert Scheer...more >>

Hi, I have created a simple COM+ application on XP box and compiled the component with a strong name and with"Register for COM interop" enabled. The component is then registered on COM+ and I have created an .msi file by doing an export in COM+ with the following properties: 1. Server applica...more >>

Hi all I require a calendar control in .NET in Japanese. But how do I convert this into the year convention followed in Japan, as I understand that it is different from ours?? Please help me here. Thanks a lot!! ...more >>

hi, I have ClassA:ServicedComponent. How do i read the maxpoolsize, minpoolsize parameters from a config file? All across the web , I get articles which say that this can be achieved by 'hard-coding' them into the 'ObjectPoolingAttribute' at the beginning of the class.. THanks sriram...more >>

Hello all, I've written a c# wrapper (Com+ class library) over a old legacy c++ dll. the Dll is a thread unsafe dll (it is using global variables) and was supplied to me by a third party company(the code is not available to me). Is there a way to adjust com+ so every instance will be in a dif...more >>