Hi, I have a little problem with supplying a mixed set of byVal and byRef parameters to a dynamically created PInvoke method. I have the following message signature which works perfectly when created via DllImport: int CT_data(ushort tn, ref byte sad, ref byte dad, ushort cl, byte[] c, ref u...more >>

I am trying to implement an asynchronous COM interface in managed C++. I am having trouble with the implementation ICallFactory. When ICallFactory::CreateCall is invoked I am passed the object reference which should be the controlling unknown of my call object. In the unmanaged world I woul...more >>

Is it possible to implement true COM aggregation using COM Interop in VB.NET - I'm working with a product that allows for customizations through COM aggregation and was wondering if this was possible using VB.NET. More specifically, the product has core COM components that can be aggregate...more >>

all, i am trying to implement an interface that has a vb collection as the input argument. the interface is defined in a object library written in IDL, so the actual parameter is declared as a variant. the VB class that implements this interface is casting a collection to the variant. if ...more >>

Hi. Is it possible to create ActiveX in .NET? The steps I took: 1.Created project of type "class library" 2.Compiled it with "Register with COM interop" 3.Use "Regasm" to create .tlb and to register it Then I tried to put this "contol" on a VB form / Access form, but It is impossible. My...more >>

Hi, To display the progress of a copy operation I have written the following code (C#) static void Main(string[] args) { bool cancel = false; int var = 0; CopyFileEx( args[0], args[1], new CopyProgressRoutine( CopyProgress ), var, ref cancel, 1 ); GC.KeepAliv...more >>

Hi, I have found an exception "Object does not match target type." in the following circumstances: - Using Microsoft Word 2003. It does not happen with Microsoft Word 2002. - Using Reflection to manipulate Word instead of late binding (Option Strict Off) in VB.Net The code to reproduce t...more >>

Hi, I have some trouble with MS Project COM object. The following C# code segment has given me an "An unexpected error occurred with the method" exception during accessing timeScaleValue.Value after 10 looping in the foreach. However, there is not problem accessing other properties such as...more >>

I would like to write a function in c# that returns an array of objects to a client written in VB. The Classbrowser in VB correctly shows the function as returning an array of CollectionItem objects, but I cannot call the function in VB. this is my VB code: Dim srv As New WSClientVB.Login...more >>

I have a VB6 class, which when made to a DLL is about 60KB and I am referencing that in my C#.net Project. Now I have two questions. 1. The name of the dll when compiled in vb6 is say myclass.dll, I see that .net has mase a dll as Interop.myclass.dll. Is this norma? 2. The size of Interop.myclass....more >>

Dear people, I have question regarding accessing Excel with C# in VS.NET 2003. Adding the Excel COM reference goes okay and I can create an Excel.ApplicationClass object without problems. However when Excel.ApplicationClass gets created the XLA addins allready set in Excel do not load. Cou...more >>

Hi My vb.net opens a word document from a word template. I am trying to find when the document is saved by the user so I can make a history in my vb.net app. Here is how I think it may work; Open a word doc from vb.net app, pass ref of a vb.net event handler to the word doc, in word, use Fi...more >>

Hi I am trying to automate word from my vb.net app. The problem I have is how to display the envelopes and labels option dialogs in Word 2000. Anyone knows how to do it from vb.net? Thanks Regards ...more >>

I am having a problem with issuing commands to my smartcard, I converted the call to SCardTransmit as follows: [C#] [DllImport("WinSCard.dll", EntryPoint="SCardTransmit", CharSet=CharSet.Unicode, CallingConvention=CallingConvention.StdCall)] public static extern uint SCardTransmit( [In] ui...more >>

I'm trying to read in a ref parameter from a native dll, its working in vb if i use the kernel32 functions below transforming the ref param to a vb string: Now, i want to skip this vb dll and use the native dll directly from c# [DllImport("pafutw32.dll")] // CharSet = CharSet.Auto, CallingCo...more >>

I am having problems debugging an application that is supposed to use a COM server created in C#. In order to limit the possibly problems, I have given up working on my own code, and turned to a sample to diagnose what might be going wrong. I have build (not using the VS.NET IDE) the first...more >>

Hi all, i tried to dynamically invoke an APi-function via Reflection.Emit. Everything works fine with calling the function but I seem to be unabled to get the functions return value. The call opens a MessageBox in Abort-Retry-Ignore mode just as expected. But whatever button I click on the retu...more >>

Is there a way to test an Excel application object to see if it is "valid"? Same question for a workbook. Testing for "Nothing" doesn't work, because even after a workbook has been closed or the application quit (by the user) the reference variables still point to "something". However, any ...more >>

Hi, ENV: Windows 2003, Visual Studio 2003. I'm in the process of strong naming all our assemblies, however, those that use COM Interop wrappers (such as the ActiveDS type library) that have been generated by Visual Studio will not build because the interop is not "Strong named". Fair enoug...more >>

Hi, I am using the custtask.dll interop in a C# application. This DLL comes from Microsft SQL Server in order to write applications creating and/or managing DTS packages. This DLL is usually used with the dtspkg.dll. Everything is working fine except for two types of DTS tasks: MessageQu...more >>

Hi, Since I use Framework 1.1, I have an error when I use Word Interop, error which I did not have with Framework 1.0. When I do this : Word.Application wrdApp = new Word.Application(); I have the error message : System.Runtime.InteropServices.COMException (0x8001010A): Le filtre de ...more >>

I've been developing in Windows XP with Office 2002. I have written a set of addins in C#. They work fine in Windows XP machines with Office 2002, but I believe that they are not working when I install the software in Windows 2000 with Office 2000. I downloaded and believe I am using the Offi...more >>

hi, everybody, When I declare follows in C unsigned char *s; unsigned char **s; How can I declare them in C# ? thanks...more >>

Help! I have a VB .Net program that reads data from a piece of hardware every so often (from 250ms to a few minutes) and then writes the data to an Excel file. It generally works, except sometimes Excel gets completely hung up, if you invoke Excel separately outside the application. We nee...more >>

I created a library in .net and I need it to be com compatible. I've been testing out my com interop using vbs here's a snippet of the code that gives me a problem Set comObj = CreateObject("iCode.Interop.ComInterop") Set item = comObj.ItemFromItemCode("KV35S42") Set info = item.AdditionalInf...more >>

Here's my situation: I have a .NET (C#) dll (COM 1) which contains a reference to another COM library (COM 2). I also have a C++ program which accesses COM 1 via Interop. I want to include a routine in the interface to COM 1 which accesses an interface defined in COM 2. How do I do this?? I have...more >>

hi, I have a program which waits for batches documents to be dropped into a folder, once this happens, a class which activates the word object is instaniated per batchg of docs & a number of things such as spellchecking grammer checking etc are done. When one batch(containing one or more docs...more >>

I know this has been ask many many times... I have one C++ managed dll that consumes another non managed c++ dll. My NON managed dll exports for instance the following: __declspec(dllexport) string GetDataFromImgFile(const string &strFileAndPath, bool bUseStrictValidation ...more >>

I am resubmitting this post in the hope that a MSFT employee will repsond. I understand that as an MSDN member I am garanteed a response within 72 hours. My original question is as follows: I'm porting a set of VB6 COM+ business objects to Visual Basic .NET and I wanted to take advantage o...more >>

I was searching for an answer to this exact question when I ran accross a post in this forum from back in Feb., but was never answered. I am reposting in hopes that someone can now help. The only thing I can add to the original posters comments is that it works fine if I use an AutoDual Cl...more >>

I am trying to consume a .NET project from VB6. And I am at my wits end. I've tried making the thing a global assembly cache object. I've tried just trying to run it locally. I am really not having any luck. The .NET application is a signed assembly. My latest tactic is to set the ClassInter...more >>

I have a .NET remote server and a C# console client. I want the .NET remote server to wrap COM callback function, so my C# client can use those functions remotely. After I got metadata from COM DLL, I am so confused. (My original COM class is called DumpEx.) There are DumpEx, DumpExClass, IDumpE...more >>

Hello everybody, currently I need to implement some kind of messaging framework for processes running on one computer. I guess, I actually have two options, COM+ and .Net Remoting. I successfully ran a test using COM+ (taken from an MS article "Loosely-coupled events" or s.th. like that). F...more >>

Hi all I'm having a bit of trouble with the Microsoft ActiveX web browser control. I'm trying to create a new instance of my web browser app every time the NewWindow2Event is fired. private void htmlControl_NewWindow2(object sender, AxSHDocVw.DWebBrowserEvents2_NewWindow2Event e) {...more >>

Hello, This seems like a trivial problem, but I can't seem to resolve the issue... - A Managed Type DotNetCustomAssembly written in C# will implement a COM Interface (specified through a typelibrary and using COM Interop). eg. class DotNetCustomAssembly : IDataEvent { String Process (...more >>

Hi, I have unmananged C++ classes that I would like to access .NET objects from. Can anyone help, point me in the right direction to find out how to mage this access possible. Thanks GKlein ...more >>

Ok.. here is a better explanation.. What I have done so far is execute cmd.exe and have the stdout printed to the textbox2 on my form. But I need to know how to keep the cmd.exe open, and send more commands to it via TextBox1 and receive output from it back into my TextBox2? I have seen an exa...more >>