"Distributed transaction completed. Either enlist this session in a new transaction or the NULL transaction." I am recieving the above error when attempt to access a remote sql server database 2000 (sp3a) from ADO.Net. The database is on a windows 2003 machine and the ado.net code (web ser...more >>

Using Word interop, I can open create and open documents, but when I try to code a Close method to close just one of the several open documents, I get an error: Ambiguous reference across the inherited interfaces Word_Application and Word_applicationEvents2 Events. To use the interop, I've...more >>

Hi all, Could anyone advise how to handle the marshalling of UCHAR* - As I understand it it can be a null terminated string? I have a function in a dll [not written by me so I don't have the src]... int FEISC_0x65_SoftVersion(int iReaderHnd, UCHAR cBusAdr, UCHAR* cVersion, int iDataType) ...more >>

Here is the situation. I have a C# app that calls exported functions contained in an unmanaged C++ DLL. This has been working just fine – when the unmanaged DLL was compiled using VS 6.0 That V6 project was brought into VS2003 and recompiled with NO changes made to the project. But no...more >>

Hi I want to know if I could create a Win32 API on C# or VB.Net. If yes, I need to put some extra code or compile from a different way? I have a old Delphi application that needs to load my dll like a API using the function LoadLibrary ak DLLImport from C#. I tried using .Net and ...more >>

Hi, It is my first time to use C#, and i struggle with my code with wininet api. Declare API: public abstract class WinInet { StructLayout(LayoutKind.Sequential)] public struct INTERNET_BUFFERS { public UInt32 dwStructSize; public IntPtr Next; public String lpcszHeader;...more >>

I'm opening an Excel file using ASP.NET, but Excel process remains it is not killed, I tried killing it by using Quit() that is also not working, if anybody have any solution for this please help me out. ********************************************************************** Sent via Fuzzy Softwa...more >>

Hello, I am writing a Word add-in in C#. I am trying to create a dialog window that will behave similarly to the = "Find" dialog in Word or Visual Studio (actually, I try to mimic the Visual Studio "find" as it does not appear = on the taskbar). That is: - The dialog is modeless (the user c...more >>

Hello, I have a problem with Marshal.GetLastWin32Error() Every call returns 127 (ERROR_PROC_NOT_FOUND) even if the previous call = was successful. For example, given: namespace Utils { public class Win32 { [DllImport("user32.dll", SetLastError =3D true)] publi...more >>

I have need to automate the insertion of a bulleted list into a word document using Word interop (DLL version 9). In a very simple example, I have done this using: Range.ListFormat.ApplyBulletDefault() and I indeed see a bulleted list. What I really need is to be able to control the bu...more >>

We have a DLL compiled under Borland C++ Builder 5 calling an exported C entry point in a Mixed Mode Managed C++ DLL. This function in turn calls functions in a C# assembly. The application executable is also compiled by Borland. We encountered an ArithmeticException thrown from the Syste...more >>

Is there an easy way to get the handle of an open excel window from my vb.net application. I've opened an excel object as myexcel = new excel.application. I've read that this has a handle property but can't access it. -- Thanks RonF...more >>

All I'm getting a problem whilst using COM interop. I've got some idl similar to the following (GUIDs etc. removed for clarity):- library { interface IFlyable : IUnknown { HRESULT Fly(); } interface IFlyableCollection : IUnknown { HRESULT GetColl...more >>

I have a VB.NET-Program, that makes calls to a external C++ function . This part is alread done and is working well. The values are given by a structure and come back with a structure Now my question: I want extend the structure that come back from the DLL with a string There should als...more >>

Hello. I have a C# database application which stores files in the database. I would like to be able to use the clipboard to pass files from my application to the windows explorer. I have read quite alot articles about this and I think that using the IStream interface is the way to do it. Ho...more >>

In the past,I used COM to access excel files by using the following way: Assume the file to manipulate is "c:\temp\test.xls" 1 CreateBindCtx( 0, &pBndCtx ); 2 MkParseDisplayName( pBndCtx, *pName, &ulEaten, &pMoniker); 3 pMoniker->BindToObject(pBndCtx, 0, IID_IUnknown, (LPLPVOID)&m_pOb...more >>

Hello Ng, The RCW created with tlbimp shows following original VB6 definition of the array parameter: Public Function FunctionToCall(ByRef myArray() As String) As Object I need to pass a 2-dimensional string to a COM dll function. e.g.: Dim a(0,5) as String FunctionToCall(a) This w...more >>

I've been writing C# code for maybe as much as 2 weeks now. The code I'm writing is exposed as a garden variety COM object that VC++ 6.0 and VB 6.0 can use. Coincidentally my COM development track record is also 2 weeks long. :-) The time has come to debug down into the C# COM object from a ...more >>

Hi, I am trying to consume a C# library from ASP through interOP, this is to read some configuration settings from the machine.config file. But for some reason the interOP works fine with a VB client but not with ASP, though ASP can create the instance it fails executing the method. Would b...more >>

Hello I am trying to create a COM component that stubbornly refuses to be created on any thread that has not entered the STA. I spawned a new thread, made it enter STA by changing the Thread.ApartmentState to ApartmentState.STA and then created the COM object. It successfully gets created ...more >>

My VB6 program is using an increasing number of .NET components. It's becoming a distribution nightmare. When I send out an update of the software, the new .NET DLL's are not getting registered in the GAC, so problems I've solved aren't being solved for my customers. My update routine calls...more >>

I am trying to PInvoke a function that returns a string. The C signature of the function looks like: const TCHAR *WINAPI GetCommandStatusText(HANDLE hReader, int stat); My trouble lies in marshaling this returned string. I declared the function in C# below: [DllImport("MyApi32.dll")] s...more >>

Hello, I'm trying to do an application which create a button in windows explorer toolbar and a element in folders / drives TreeView. I searched information but I haven't found neither via internet and books. Thanks. Víctor. ...more >>

I have created a UserControl in C# that I have added the GUID, COMVisible, and the COMRegister and Unregister functions, ProgID, and ClassInterfacetype...... when I register this assembly and try to use it in VBA I get file errors when I run the app. It shows up in the toolbox fine, and dr...more >>

I'm using the new Enterprise Library from Microsoft. I loaded all the references which are used in the Security example. Still it gives this error: The dependency 'Microsoft.Interop.Security.AzRoles' could not be found. This dependency should be in the file Microsoft.Practices.EnterpriseL...more >>

I have been working with a third party COM component for a couple years now, and have been integrating our .NET website, We recently upgraded the version of the third party application, and now when I run my code, I get: QueryInterface for interface MEAOAM._AddressMap failed. A couple of ...more >>

I am using a third party dll that has a function like void : Func_name(int a,char* b[],char* c[]) How can I make a declaration in C# to set a char*[] pointer? I am currently using a string[] and the size of the table is no problem since I know that it is always 1. I still have to create a tabl...more >>