I would like to know what is required in order to create a C# class that can fire events to a COM object. I have seen many posts of the reverse (catching COM object events in C#), but not many of the case where the C# class is firing the events. As an example, consider a MyProject Active X DL...more >>

Hi folks. I dunno if this is the right place to ask for help with ActiveX / .net / Outlook, so ill siimpl give it a try :) I want to develop an ActiveX Control for MS-Outlooks 2003 with Visual Studio.Net 2003 and .net Framework 1.1 installed. Ive read tons of stuff about dlls with .Net, s...more >>

Hey all. I have a problem with my implimentation of IHTMLElementCollection which I have defined like so: [ComVisible(true), Guid("3050f21f-98b5-11cf-bb82-00aa00bdce0b"), InterfaceTypeAttribute(ComInterfaceType.InterfaceIsIDispatch), TypeLibType(TypeLibTypeFlags.FDual | TypeLibTypeFlags.FD...more >>

hello, i try to pass a simple short array from COM to C# but I only get back wrong values from the COM Server. The COM Server: *.h : ... [id(4), helpstring("method Short_Array_read")] HRESULT Short_Array_read ([in, out] short* pcElems, [in, out, size_is(*pcElems)] short** Array_Out);...more >>

Hi, I have written some code in VB.net that uses a COM object via a reference I have add to my project. This program works as expected. I thought it would be a neat idea to expose the functionality offered by this program as a web service so that I can use the program across my UNIX/LINUX and...more >>

Hi, I hoping am using Tlbimp Excel9.olb to generate the office.dll and excel.dll so i can then use ilasm to created the ils to modify. However I get the message "Tlbimp error: System.IO.FileNotFoundException - File or assembly name Microsoft.Vbe.Interop, or one of its dependencis, was not fou...more >>

How I can use different version of the same assembly in one project? Ex: microsoft.office.interop ver 11.0 (for Office 2003) and ver 10.x (for previous Office version). Thx Luca Guccione ...more >>

Hi, I tried to retrieve CustomAttributes from a field in a class that has a MarshalAs attribute but I couldn't. Out of frustration I tried all possible combinations. GetCustomAttributes(true); GetCustomAttributes(false); GetCustomAttributes(typeof(MarshalAsAttribute), true); GetCustom...more >>

I am trying to use the CFSTR_SHELLIDLIST clipboard format to allow the creation of links to files for a drag and drop operation in a C# app. I am obtaining PIDL's to the files in question and then setting up a CIDA structure in global memory - reading it back it seems to be in the format req...more >>

Hello... I've seen about 10 ways to do this, and for whatever reason I cant insert page breaks or linebreaks (or rather I can, but they dont appear to happen in the resulting document. I get a reference to the endofdocument bookmark range then I can create a paragraph based on that, a...more >>

I want to use Excel-sheets as input and output in an ASP.NET environment. I always get the message that the application has not enough priviliges to open Excel. Can anybody give me an idea what i have to do. I'm working on a localhost with IIS...more >>

The following code snippet fails when trying to save a mailitem to a windows folder: I've tried many variations of path - If i supply a file name I get an "Invalid Parameter" error - so i'm pretty sure it just wants path - and when I supply path (with \ or without \ as the last char) this i...more >>

Is there any way to mark a .NET interop class as non-aggregatable? My .NET classes are being instantiated as aggegatable objects by 3rd party COM objects, and when they're passed around to my other .NET objects they're being passed as __ComObject because the Marshaler can't figure out what to...more >>

Is it possible to create an empty form that attaches to an existing window handle? I have a .NET class library method that requires a form ref as a parameter, but all I have is a window handle. I'm hoping to do this the easy way....more >>

The code at http://www.codeproject.com/dotnet/bridge.asp is an example of how to call managed C++ from an unmanaged CLI program. This code does not make any of the calls to initiate the CLR etc. I have tried it, and it works, but I really don't understand how and why since the CLR and default...more >>

Does the following code cause a memory leak in .NET? Void Function1() { hFile= CreateFile(static_cast<const char *>(Marshal::StringToHGlobalAnsi(s).ToPointer()), GENERIC_WRITE, 0, NUL...more >>

Hello, I'm currently using Remoting (HTTP/Binary) to remote a simple object. Everything is working fine except for one function that returns an arraylist of datatables. When I call this function, nothing is returned (ie length of array =0). However, if I comment out my config file so tha...more >>

Non-visual C# objects on a webpage are not marked as "safe for scripting" I'm developing .NET components in C# which are used as ActiveX-style controls on web pages that are displayed inside a custom browser which is based on the IE web browser control. On 3 of about 100 PCs that the control...more >>

I need to call methods of java classes from a .net program. There is a way to do this?...more >>

I have a C# WinForms app which reuses unmanaged C++ dlls using COM interop. When I debug the app by running the code in the IDE, it is very very slow. In fact almost too slow to use. However, when I run the .exe, it is very very fast. I have noticed huge numbers of lines of info being printed ...more >>

I have a program in C# that uses P/Invoke to dialup a RAS connection. On some computers this does not work. The error I get is #86 (The specified network password is not correct). I tried looking for information on this error on the internet and As far as I can tell this error is related to aut...more >>

I have successfully loaded a MANAGED C++ dll from an UNmanaged C++ program. I can even manage to call methods in classes in that DLL. What I need to know is how to pass a string back to the UNmanaged code from the managed code. public __gc __interface KMS::Transport::Managed::IManager { pub...more >>

I've written a VB.Net application that uses Office 2003 (Word and Excel) automation. But, I have a mix of Windows 2K workstations with Office 2K, Office XP, and Office 2003. I've read KB articles about Office development under the .Net framework, including an article on the Office XP PIAs. ...more >>

Anyone know what messages are analogous to: MouseLeave MouseEnter MouseHover ?? Thanks! ...more >>

I am creating an Excel File through code, but when I try to open the file, I always get the following message: <File name> should be opened as read-only unless you need to save changes to it. Open as read-only? KB Article 181688 Mentions this problem: http://support.microsoft.com/default.a...more >>

Built an Office Addin with .net 2003. I have captured the save and save as menu options so I can run my own code before the regular save function executes. However, I have not been able to figure out how to do the same with CTRL-S. Does anyone have any ideas? Thanks Jason ...more >>

Does anyone know if the Whidbey TypeLibConverter has an option that corrects the IMO greates flaw of all: The VB6-esque conversion of all coclass default interfaces to the coclass itself (just like VB6 pretends that the default interface == the coclass but does a much better job at it than .N...more >>

Hi all, I'm having problems passing a blittable type (bool) from unmanaged C++ code to a managed callback function. I have an unmanaged C callback function declared as follows: typedef int __stdcall PostProcFileCallback(void *pData, LPCTSTR pszFilename, bool bSkipped); and some code ...more >>

Hello, I'm having a strange problem that is probably due to my lack of understanding of how threading & COM Interop works in a WinForms.NET application. Here's the situation: I have a 3rd party COM component that takes about 5 seconds to run one of its functions (Network IO bound call...more >>

So I'm developing an application for my company which uses the MS SpeechLib. I want everyone to be able to use it, so that the machines which do not have the speech library installed will still work correctly, but won't be able to have further functionality provided by the speech library. C...more >>

First, apologies for cross-posting. I'm writing a Visio add-in using the .NET Framework. The add-in displays a number of windows forms as modal dialog boxes. In order to display properly, I set the parent to the Visio Window. I've done this by creating a class that implements IWin32Window. ...more >>

last week i successfully created and installed (with visual studio / ..net 2.0beta and then with the .net 1.1 framework) a DLL i can call from ASP under IIS5 on a machine running the .net 1.1 framework. both development and target machines run w2k and iis5. [c.f. (microsoft.public.dotnet.fra...more >>

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dv_wrcore/html/wrconthreadingsupportinoffice.asp This info (above) means to me that I should not automate Word from a thread. I am currently automating Word from a worker thread, not my main process. However, I thought that as I...more >>

See the thread in csharp group. Please try to help us. TNX ---------------------------------- -- Tamir Khason You want dot.NET? Just ask: "Please, www.dotnet.us " ---------------------------------- Yes, I know this. FooCOM.dll (original com) is in the same directory with i...more >>

I don't want to put the .DLL in a known OS path folder, I'll like to define or load the .DLL from an specific location at runtime. How should I do it? Thanks in advance...more >>

when a function wants an MFC CString? TIA....more >>

Hallo, is it possible to call a remote .Net Application from a local COM Client using .Net interop?? All I have read until now, using remoting requires that you have a Client and a Server writen in managed code so I'm not shure if above scenario can work. Thanks in advance for all hin...more >>

Hello, I would like to call unmanaged code (C++ Library Code) in C# library. When I Call C++ Function with an "int" parameter. It seems that there is a Marshalling problem; because when I put 88 as parameter, My C++ function receives 1240420 How to keep same parameter value between C# ...more >>

Have Excel document that I attempt to open using Interop Assemblies with ASP.NET. Problem is Excel is opened but is not visible from web app. Code used is as follows: Dim oExcel As New Excel.ApplicationClass() Dim oBooks As Excel.Workbooks oBook.Open( "some excel report"...more >>

Hi, I'm trying to build my custom Printer Dialog box. The following code is supposed to Pop up the printer properties form and edit the PrinterSettings. My problem is that I'm able to show the Printer Properties form but I'm unable to write back the settings to my PrinterSettings It either...more >>

Hi! I think the MSDN docs about interop doesn't state clearly enough that there is a character encoding conversion automaticly done from Unicode to the characterset for the computer during interop. This got me really puzzled for a few days. I've got a legacy C-application (dll) that tak...more >>

When running our assembly which PInvokes to an unmanaged dll, I am getting the exception System.Runtime.InteropServices.MarshalDirectiveException : Can not marshal parameter #1: Invalid managed/unmanaged type combination (Int/UInt must be paired with I or U). This exception only occurs when ...more >>

Hi All, I have a compiled Fortran executable that I must execute from a VB.Net windows application. What is the best way to go about this? In a similar application, developed with VB6, I used the ShellExecute Win API function. Is there a cleaner way in .NET? Best Regards, Chad...more >>

In my file manager app I have set up the ability to drag and drop objects (files and folders) between its two ListView panes and also between it and Explorer. I fire off the dragstart event in the ListView: (having set up apipt from the top left of the ListViewItem) JFunc.JCopyFilesToClip...more >>

I need to interface an old C application with C#.NET, I created a IJW C++ bridge, here is a sample code ...... #include "stdafx.h" #include "MyCPPClass.Interop.h" #pragma managed #using <mscorlib.dll> #using "MyCSharpAssembly.dll" using namespace System; using namespace System::Runtime...more >>

I have been trying to use this c++ Windows API function for over a week now, reading MSDN, threads in forums... However, I have made little progres. I used a code example from a thread "http://groups.google.com/groups?hl=en&lr=&threadm= ugy6CyX%24DHA.268%40TK2MSFTNGP10.phx.gbl&rnum=1&prev=/group...more >>

I have a Windows Forms project that embeds Internet Explorer. On my development machine all that is required for the application to run is the 48KB file AxInterop.SHDocVw.dll and the 124KB Interop.SHDocVw.dll. (Btw, what is the difference between these two? Can I reduce this to just one?). ...more >>

Hello all, I'm beating my head against the wall on this problem. Everything else has been really easy. I need to call a COM object, that is implemented in C#, from vbscript. VBScript only knows Variants, so I need to return an array as a variant from one of my functions. [Guid("10612AA1-...more >>

Hi, as I'm not really a COM knowledgeable, but I have to deal with it :), I have some questions. The background: C# COM addin for Outlook 2000. Framework 1.1 SP1. VS.Net2003. Ok, Outlook works in STA mode with addins. Reading here: http://weblogs.asp.net/larryosterman/archive/2004/10/1...more >>

I have two questions: 1. I have written a dotnet assembly and registed it as COM object (using Register as Com Interop in Build). Is there a way to reference this as a COM object in another .Net application? I want to test that COM clients will effectively use this object. 2. When I buil...more >>