I am working on a conversion project from VB6 -> .Net. The first pass is to just convert over w/o restructuring any of the classes. For testing of the business object classes, I am writing a .Net utlility to instantiate the VB6 objects, use reflection on them to get their property values. I will...more >>

Hi, I'm trying to create a C# dll that will return an array of objects. SomeObj[] Func(){...} The object in question is exposed to COM and I can create it in VB6 with no problem. When i look at the type library it shows me that the return type is an array of the object in question bu...more >>

Hi, I am having to write a COM wrapper dll to enable the use of a c++ library in a c# .net app, and have a few questions regarding what types to use in the interface. I used to program quite a bit of COM, but a couple of years of c# .net has made me stupid. Anyway, I need to pass (from c# t...more >>

Hello All! In the project I need to use Browser Helper Object (BHO) technology to customize the ContextMenu events in the IE. I have successfully written all the necessary logic to implement IObjectWithSite and other required interfaces. How to attach to Browser Helper Object (BHO) with...more >>

I have cross-posted this question to 3 newsgroups since I am not sure exactly where it belongs (and some NG's have very less activity). Apologies in advance for this. I have set the followup to the dotnet.framework.interop NG but feel free to chage it as appopriate. I have a question regard...more >>

Does anyone know of a tool or procedure that will register an assembly for COM Interop, just like regasm, except that it puts the generated registry keys under HKEY_CURRENT_USER\Software\Classes? In other words, I want to register an assembly for COM so that the registration does not requir...more >>

Dear all, We try to access a third party Matlab dll (which was created using Matlab COM Builder) from C#. It works fine when using strings and one-dimensional arrays but fails with two-dimensional arrays. We give our example of the code below: static void TestBasicStat() { ...more >>

Hello, Does anyone know what conditions might make a COM component written in C# to not load with a "Catastrophic Failure" error message? The odd thing is that everything works fine as a command-line application, but when run under ISAPI in IIS the error occurs, even when the user IIS i...more >>

I'm using Marshal::StructureToPtr to well...marshal a struct over to unmanaged memory and get its pointer. Which method should I use to destroy the memory the pointer represents? Marshal.DestroyStructure or Marshal.FreehGlobal? Does it matter? Thanks, John...more >>

I am trying to redirect stdin, stdout, stderr of a process I started with the win32 call CreateProcessAsUser, since I couldn't find a way to start a process with .net that used a user name and password and didn't show any kind of window. The only way I can see to do redirect the input and outpu...more >>

Hi everyone, I am using Visual Basic 2005. My project is in vb.net. After executing a request on an Access Table, I would like to copy my recordset into an array as such: Dim ConnectionString As String = "Provider=Microsoft.Jet.OLEDB. 4.0; Data Source=c:\myDataBase.mdb" Di...more >>

Hi, i have the following function in my C library: ham_status_t ham_cursor_move(ham_cursor_t *cursor, ham_key_t *key, ham_record_t *record, ham_u32_t flags); it's possible to call the function in 4 several ways: ham_key_t key; ham_record_t rec; ham_cursor_move(cursor, NULL,...more >>

Hi, I need to write a COM component in C# (VS 2005) I created the C# class library project, marked it "Make Assemble COM visible" I set the assembly to be signed with a key file. The class contains a single method, as below: namespace MyPlugin { public class MyClass { p...more >>

Hi I created a setup file of my app and remotely installed it on a clients machine. The app bombs at start-up with the error; Error while initializing application: Retrieving the COM class factory for component with CLSID {0006F03A-0000-0000-C000-000000000046} failed due to the following...more >>

Hopefully I can explain this well enough, and apologize if this is a trivial matter. I've searched and couldn't find anything. I needed to make some changes to a dot net application (framework 2.0). The project has references set to some DLLs that reside in a subfolder (obj) of the project....more >>

Hi guys, I am trying to write small utility that will be able to show you if specified file is COM or not (if it needs registration) or if there are any COM files in specified directory (this is extremely useful for deployment of applications). Currently I am trying to achieve that by calli...more >>

Hello There, I have an unmanaged ActiveX control written in MFC. And using CWinFormsControl<> template I am using a managed WinForms User Control contained in this ActiveX control. Now I want to marshal interface of this outer ActiveX control into the WinForms User Control and want to be ab...more >>

Hello, I installed Microsoft Office 2007 Primary Interop Assemblies to my WinXP and after that I launched Visual Studio 2005. I created a project but when I tried to add references to these assemblies I didn't find them. Where PIA package actually installs PIA assemblies and how can I g...more >>

Hello NG, I have a problem displaying a C# Dialog modally. I have 2 VB6 Forms visible (Form A and Form B). One is opening a C# dialog modally (Form A). This C# Dialog is not behaving like a modal Dialog, because I can bring the second VB6 Dialog to Front (Form B). I Don't know what I'm doin...more >>

Hi, We are moving a VB6 app to .NET form by form. In the past for our VB6 app we installed the necessary ocx's, dll's etc on the client PC but kept the main exe on a network folder. To release a new version of the application we could just replace the exe file on the network instead of doi...more >>

I have to port some VBA Code to VB DotNet The following code block defines several types in VBA. Public Type ProbParamKind Na As Long Nc As Long Nstep As Long MaxCycles As Long AxialPts As Long End Type Public Type RunOptKind KeyProdID As Long...more >>

Hi, I have written a C# COM component which I am using via a VB6 application. Everything seems to work just fine on my local machine but when I try to use the component and VB app on another machine I can't seem to make it work. The process I used to create the component is : 1. Create...more >>

Hi I need to develop for Outlook 2003 and upwards in my app. 1. If I develop for OL2003 would it be compatible (as far as email sending) with later OL versions? 2. I am familiar with OL programming in VB6/VBA but unfamiliar with how to use OL2003 Interop Assemblies. Is there a link that...more >>

I'm calling Marshal.ReleaseComObject but com objects are still leaking. How to properly release MODI.Document?? private void Form1_Load(object sender, EventArgs e) { for (int i = 0; i < 1000000; i++) { MODI.Document miDoc = new MODI.Do...more >>

Hi I am aware that there are no Primary Interop Assemblies for Outlook 2000 but I would like to aim for the lowest common denominator for maximum compatibility. I can not use late binding as I am using With Events. I am also slightly tied from creating outlook 2000 assemblies myself as I am...more >>

The following code works fine under Windows XP 32-bit. Under Windows Vista 64-bit I am informed that something attempted to load an incorrectly formatted program. I would guess that, when translated from the Microsoft, means an exception was raised when the transition from managed to unmanag...more >>

I'm using C# to automate a Word session. Atthe start of the session I build a custome set of menu items under the "Tools" CommandBar. 2 Questions: 1) How do I add a menu Separator into my custom menus 2) How Do I add a new Item to the top menu Command Bar. (When I try wordApp.CommandB...more >>

Hi All, I want to use functions in a c++ dll file in my c# application which i am developing for Windows Mobile 5.0. I used runtime.interopservices and dllimport for this purpose. When i run the application i get a Missingmethod exception saying that cant find an entry ...more >>