Hi, I can't get the interop for Excel to work: I've installed the PIAs and reinstalled, removed office 2K and reinstalled, but to no avail. Every time I add a reference to Excel in my project, the path shows that the gac version isn't being used. Any ideas on where I go from here? Richar...more >>

I have local printer connected to PC_1 (lpt/usb). It’s shared (no pwd, ACL for printing is set to Everyone). I want to print data from PC_2, via \\PC_1\<printerName>. OpenPrinter and StartDocPrinter fail with GetLastError == 997 (ERROR_IO_PENDING - Overlapped I/O operation is in progres...more >>

Hello, I was just wondering if someone could chime in on a design issue. If I write a class and make the class COM visible by using the ClassInterfaceAttribute and giving it a Guid and checking the Register for COM interop option in the project property pages, can I also use this class in .NET w...more >>

When a managed DLL makes a call to an unmanaged DLL what controls the lifetime of the unmanaged DLL? I am assuming when I make the first call to an unmanaged DLL, the unmanaged DLL is loaded into memory and stays in memory (meaning global variables are maintained). How does to unmanaged DLL ...more >>

How do I call a dotnet component from a VB com component....more >>

Hi everybody, I mentioned some time ago that an application getting data from an Excel spreadsheet, stopped reading the spreadsheet after the client upgraded from Office XP to Office 2003. Well, I thought it still would do, but although confirmed in this forum that apparently remained unkno...more >>

Hi all, We use a Microsoft Business Solutions Application - Great Plains. This has a proprietary language for development - Dexterity/Sanscript. From Sanscript we can register a call back as an object on the ROT. From C# I can get access to the running object (Marshal.GetActiveObject) but...more >>

I have an interface in Managed C++ where one of the methods is this one: Object *Foo(Boolean *b) When I use tlbexp to check the IDL the line above is converted to: HRESULT Foo([in, out] VARIANT_BOOL *b, [out, retval] VARIANT *ptr) However I need: HRESULT Foo([in] VARIANT_BOOL b, [out,...more >>

You must initialize Component Object Model (COM) with CoInitialize or OleInitialize prior to calling SHGetFileInfo This statement appears in the Help at location Window Shell and Control. Does it apply for DotNet VB? I'm using SHGetFileInfo without initialize and it appears to be wo...more >>

Hi NG! I have a class that derives of an interface (IASysCls) which implements a function with this argument list (the function is then later be called by a caller): public void GetSObjDesc(int Start, int Size, out int Length, out Lib.SOD ODs) In the IDL file I found this: HRESULT ...more >>

Hi, I am trying to use my .Net component from COM application. I have some static members in my .Net component. I tried to use reflection to invoke static members. Any body has example of invoking static members? Thanks Mohammad namespace Mcc.TestAutomation.Utilities { public class...more >>

Hi, Is reflection (e.g. GetField) is possible on a __ComObject ? 10x, Alex. ...more >>

I have an ActiveX DLL written in VB6. This library has a class with two public structures like these Public Type MyInnerPublicType ... End Type Public Type MyPublicType ... aField(7) as MyInnerPublicType ... End Type The same public class as a method like this P...more >>

on window 2000, I'm automating Excel (server side). If I set the impersonation in the webConfig file as: <authentication mode="Windows" /> <identity impersonate="true" userName="myDomain\myUserID" password="myPassword" /> and run this code : Dim xl As Object xl =...more >>

Hi all I have a COM DLL written in VB6 that exposes a public class with a method that can be summarized as follow public function MyPublicMethod(...) as Variant ... MyPublicMethod = AnotherMethod(...) ... end function AnotherMethod is a function that returns a user defined...more >>

H all... I created a com+ server component but I have a strange problem when calling it from the client machines on the local network (clients machines can be a member different domain or has no domain ) when calling com+ object from some clients it works well but some clients give me an erro...more >>

Hi, I know this subject has been brought up before, but I noticed that several solutions were suggested, so I ask: [1] Is it really true that Utilities.ByteArrayToBinaryString does not correctly handle the convertion of byte arrays with an odd number of bytes ? I do have a problem valid...more >>

Hello I have an OCX control Xyz.ocx. This is a non UI control. My aim is to create one of the objects from this control dynamically. 1. I used AxImp on this control and created XYZLib.dll. 2. I then attempted to create the object dynamically in this fashion and then use one of its expos...more >>

Hi, I've got an app that starts a thread to listen on a tcp port, then starts another thread to accept the socket connection and exchange some data with the client. This second thread creates a COM object for internal use. My problem is that if I test with a console app, the thread that create...more >>

When I run TlbImp.exe on my COM dll, the IDL following has an array of longs: [local] HRESULT SomeMethod ([in] short nNumBlocks, [in, size_is(nNumBlocks)] long *alBlocks, [out, retval] long *plRetVal); The output creates this method, with a ref int where the array should be: int SomeMet...more >>

We create an excel object with Excel/Office Interop Assembly and we want to offer this excel object as download without creating physically the file. The download window appears with "Save As.", "Open", etc Problem: The file we get as download is not the excel object we created. Instea...more >>

Hello everyone, I would like to use my Outlook 2003's address book in my application, so for that i've added a referece to Outlook 11.0 Object Model to my project. Then, my first line of code is: Microsoft.Office.Interop.Outlook.Application App = new Microsoft.Office.Interop.Outlook.Appl...more >>

Hi, I'm working on a VS 2003 solution with multiple projects that provides a facility to automate Excel XP (Sp2). We add a bunch of menus, provide WinForm screens etc. from Excel, and finally invoke Excel macros, if needed. Today, on my colleagues pcs, the code started throwing Missing...more >>

I'm having trouble getting my head around calling .NET components from legacy VC6. I need to implement a logging "thing" (service, object, application, whatever) in C# that will be called by legacy vc6 code. This "thing" will need to: - log messages from client applications to an SQL Serv...more >>

I am trying to use the LsaLogonUser API. I am almost there. 'This is my structure Public Structure MSV1_0_LM20_LOGON Public MessageType As MSV1_0_PROTOCOL_MESSAGE_TYPE Public LogonDomainName As String Public UserName As String Public Workstation As String Public aryPassword As Char() ...more >>

I found a strange problem with the old fashioned MS Script Control and have no clues what this is about. In a VB.NET app, I used this code: Dim sc As New MSScriptControl.ScriptControl sc = CreateObject("ScriptControl") sc.Language = "VBScript" sc.AddObject("myObj", "Hello World!...more >>

I am very new to .Net (about 1 week) and am exploring what is involved in converting my c++ app to .Net. The app is very similar to VS.Net; a container which hosts addins and in-place activates Office docs and MSHTML. If I re-write in C#, what do I need to do to expose my object model to ...more >>

Talking to COM objects from .NET is easy, but how do you pass .NET objects to COM components as arguments? This seems to be a pretty strange thing. This is what I did: In VB6, I created an activeX DLL called "test.interop" with a single class like this: #### Sub getobject(ByVal obj As Ob...more >>

Hello, I posted this question already, but in the wrong newsgroup... so here again: I have a COM interface which has the following method: HRESULT Item( [in] DWORD dwIndex, [in] DWORD dwWhichName, [in] DWORD cchLength, [out,size_is(cchLength)] LPSTR pszName ); When I create a ...more >>

Hello, I have a .NET class that I want to call from an ASP page. I did everything they way it is described in http://www.codeproject.com/dotnet/nettocom.asp?select=1005526&df=100&forumid=14076&msg=1005526 Here's my ASP code: <%@ Language=VBScript %> <% set obj=server.CreateObject("namespa...more >>

I redirect the console's output and error streams in my C# application in order to prepend some basic information for diagnostics (timestamp, thread name, etc.). This works fine for all Console.WriteLine and Console.Error.WriteLine output from my managed code. However, I use PInvoke to cal...more >>

Hello, I'm trying to connect a Delphi COM client with our .NET server. Everything seems to work fine, except that COM-created .NET objects are not properly garbage collected, e.g. the C# destructors won’t get invoked. Especially when marshalling .NET streams to COM IStreams which do not ...more >>

Reading a previous post I was able to find a high level overview of COM without registration: http://www.simple-talk.com/2005/03/09/com-server-registration/ However, I was wondering if anyone one knows of other references that could explain this further. Specifically I need help creating t...more >>

hi, all I developed an .net control, that inherited from Control class using C# language. Now, I want to use it in native VC++ or VB6 or Delphi ect, What should i do? thanks yldelight ...more >>

Hopefully someone can help me out with this; if what I'm asking is even possible. My basic question is how can I convert a void * into an Object and then later convert it back again. Here is a little more explanation in case there are other solutions I could try. (I'm using .NET v1.1.) ...more >>

I am dynamically creating ActiveX controls on WinForms in VS.Net 2003. While this code works great, the OCX file that serves the Active X control does not get released until after the application has exited. This is a fairly significant issue for our software as we are actually trying to del...more >>

Hi, we need to deploy Microsoft.mshtml and tried as follows: * install the assembly into the gac (installshield) * registering the assembly (installshield - COM interop) This works for users who executed the install-program for our software. All other users (including admins) get an "inv...more >>

I have a solution with many projects, of which several have COM references to a third-party DLL. At initialization, our application performs reflection searches through the assemblies in its start directory to discover its functionality. In other words, most of the projects know very little ab...more >>

hi, I have a exe that is registered and runs in my account. How can i run this exe in windows services so that everyuser to the server can have access to this exe. I need to also have this exe start when server starts. ...more >>

I need to marshall a struct containing a union. The union part is not being correctly passed. Any ideas on what I am missing or doing wrong? Thanks for your help! Johann The win32 struct looks like this: typedef struct { WAVEFORMATEX Format; union { WORD wValidBitsPerSample; ...more >>

Sorry about the multipost, but I realized too late after I posted to m.p.d.l.c# that my question might be more appropriate in this group. I have two C# projects: a production project and NUnit tests for it. I've recently added a test that causes a call into a registered COM component, and now ...more >>

I Am trying to migrate a vb6 project to vb.net but in the upgrade wizard the conversion crash with a critical error (vbu.exe unspecified error ....) when the wizard is loading type library stdole I have vs2002 sp1 Framevork1.1 sp1 What can i do? Best regards Davide ...more >>

I've created a very simple user control that basically hosts the IE browser. The purpose was to abstract some of the logic of setting the content of the browser from a string. I have a small problem with this control. When I use this control with a tab control (placing my browser control on ...more >>

I have some IL that I need to reassemble back into a primary interop assembly. I want my developers to be able to do this on their own, but I don't want them to have the private/public key pair. They have access to the public key. How can I have them assemble the IL (using ILASM) and dela...more >>

I'm working on a project (SDK 1.1) where we're automating Excel XP. We have an ExcelService class which is responsible to maintaining Excel object states and cleanup. The class also acts as a sink for the click events of several buttons that it creates in Excel Commandbars. Some of these but...more >>

Hi, i am developing an application which me to call c++ code from c#. basically i have created idl for that in c++ and it worked fine. Now i want to pass window handle to the c++ code. I got the handle then i am passing Handle.IntPtr() to the c++ code. Basically in the c++ code i need to d...more >>

how i can use vb6.0 dll in vb.net -- mohan ...more >>

I'm writing COM to expose some unmanaged imagery generation functions to c#. My question is how to best (easiest, clearest coding style) pass a managed pointer to COM to receive back a loaded image: example 1: using safearray COM: process([in,out] SAFEARRAY* bytes) C# call: byte[] bytes = ...more >>

I have an unmanaged api I need to call. The definition for it is the following: DLL_API int Adapt( Global* g, char** strings, int numStrings); I need to wrap this api in C++ and then pass a string array from c# to the wrapper api. Here is my attempt: C++ wrapper DLL_API long MyAdapt(...more >>

Hi all, Can anyone tell me why the code below leaks? Here is what I do: 1) create new AppDomain 2) create an instance of AppDomain2Class in it, 3) call a AppDomain2Class.Run() method 4) unload AppDomain No additional assemblies are involved ( even if they were, unloading AppDomain suppose...more >>