Can some one please point me to some sample code of using c# (.net 2 or 3x) hosting internet explorer? The target application is to run on XP or vista. I am thinking of building an c# application to automate some tasks surfing some trusted sites. The logon would still be by user. the ...more >>

I would like to know what Microsoft product(s) would be could used for the following results and what the price of the recommended product would be: I work for a small company that would like to keep track of the following: 1. the workload of each employee, 2. how many hours are assign...more >>

We've got hunderdes of installs of varying sizes of our software over the years that have never reported a problem, but we've got a single high-profile customer reporting that our software is crashing with: System.NullReferenceException: Object reference not set to an instance of an object. ...more >>

This group has been inactive so long, I wonder if I'll get a response but here goes... Am trying to troubleshoot an Interop issue where an INVALID STATE is being returned by way of "EXCEPTION HAS BEEN THROWN BY THE TARGET OF AN INVOCATION" As far as I can see, when I step through the appli...more >>

I want to create a COM Server in .Net (C#), a separate windows service that will do some work own its own and provide services to C++ clients. how can it be done? Lalit ...more >>

Hi All, I am facing problem when i am converting C#.net code(Delegate concept) into vb.net. I am unable to do that . Can someone help me to solve the problem. I am providing my C#.net code. ==================================my code is :- ====================================== [DataObject...more >>

hi, i have written an ActiveX Control in C#, registered it with COM and can use it without any problems in VB6 and VBA. My problem is: the Class assistant in Visual C++ 6 uses "_Object" as type for a member variable for this control instead of my explicit declared Interface. here is the TLB...more >>

I have found some sample code for how to do this on the site: http://blogs.microsoft.co.il/blogs/eyal/ This seems to work for the Word preview handler but the adobe one fails to load with exception: "Creating an instance of the COM component with CLSID {DC6EFB56-9CFA-464D-8880-44885D7DC...more >>

Sorry for the cross-posting. I am having a hard time trying to classify exactly what group this question would apply to. I had posted an earlier message to microsoft.public.dotnet.framework.windowsforms trying to find a way to access the lindex member of the FORMATETC structure for a CFS...more >>

Though it doesn't say it explicitly, I have been assuming Marshal.GetComInterfaceForObject pins the object you call it on. By that I mean that until you call Marshal.Release the returned IntPtr should have the same value and it's safe to cache it in native code. This assumption hasn't given me a...more >>

I have an ASP.NET web site that creates Excel reports using Microsoft.Office.Interop.Excel version 11.0.0.0. When the user clicks a CreateReport button, an Excel application is created and disposed of in the button click event as below: using Excel = Microsoft.Office.Interop.Excel; Excel.App...more >>

Problem: CDOSYS.DLL (Microsoft CDO for Windows 2000) brings in DAC 6.0 on Vista development systems, but MDAC 2.x on other platforms. So when we develop and run on Vista, our apps run fine. But our TFS2008 build server running Win2003 breaks the DAC 6.0 references since DAC 6.0 isn't availab...more >>

I need a reliable and effcient way to connect two modules one writen in native C++ code and the second written in C# as a WCF service. The connection should be bidirectional connection. What is the best way ? 1) COM? and how do I create a bidirectional connection between the 2 modules. 2) MSQu...more >>

I'm using VS2005 and trying to create a very simple UserControl to be used in IE: using System; using System.Drawing; using System.Runtime.InteropServices; using System.Windows.Forms; namespace MyClassLibrary { [ComVisible(true)] [Guid("C0000000-AAAA-BBBB-CCCC-EEEEEEEEEEEE")] ...more >>

I and am implementing Scott Swigart's MSDN solution detailed in http://msdn2.microsoft.com/en-us/library/aa719109.aspx. It details how to leverage the .Net 2.0 BackgroundWorker component via interop from a VB6 application. When I run the compiled example ("make exe") Project1.exe, I get ...more >>

Hello everyone, I would like to use the C++ interface IProvisioningProfileWireless in .Net 1.1. I came so far: [ComImport] [Guid("c96fbd51-24dd-11d8-89fb-00904b2ea9c6")] [InterfaceType(ComInterfaceType.InterfaceIsIUnknown)] public interface IProvisioningProfileWireless { [PreserveSig...more >>

I'm trying to call a dll function from C# which has the following form: int some_function(int count, char **arg1, char **arg2) Which parameter type I need to use in C# for C++ char** type? I tried byte[][] (array of byte[]) but I get error "There is no marshaling support for nested array...more >>

Hi. Using C#, receiving input ocx or DLL file that has an ActiveX How can verify that has already been registered in the system? tks. Alvaro....more >>

I wrote an ATL windows service that combines a c++ unmanaged code and a Com visible dll file created in c# both complied in a debug mode. and another c++ unmanaged dll file compiled in unicode debug (OS - windows 2003). and for unknow reason after x period of time I recieve a Debug Assertion ...more >>

Hi there: I am developing a .net dll for my VB6 app. the dll has a nested structure with more than 5 levels. For example: Struct A { Struct B } Struct B { Struct C } .. .. .. .. Struct G { Struct F } After I built the dll and registered the dll with VB6, It crashed my VB6 ...more >>

We have an intermittent problem with a com callable component created with ..net 2.0. This component is called in asp pages written in VB script on a Win2k3 server. About once every 2-4 weeks the CreateObject call for this component fails with a Error '80070002', which appears to be a "somethi...more >>

I'm using ITextRange::FindText Method and it works OK but I have to code so that the HRESULT return not equal to s_OK means it succeeded. Does VB.NET do some thing to the HRESULT before I get it? Thanks ...more >>