I'm trying to use the IGroupPolicyObject interface suggested by Mattias S. : http://www.dotnet247.com/247reference/msgs/39/197771.aspx I'm wrapping this interface in another class sort of like this: namespace MyNamespace { class WrappedIGroupPolicyObjectClass { ...more >>

Hi, In my project I call some C functions from C# code, and some times I should use callback functions. Usually all works fine. But in some cases I have following problem : Error Message: Run Time Check Failure #0 The value of ESP was not properly saved across a function call. This is usu...more >>

(apologies in advance for cross post) Hi there, I have the following method which uses COM IPersistStorage to "save" a COM object into an ILockBytes in order for me to be able to fetch the data() bytes and put them into a database. I am using similar methods to create COM objects after rea...more >>

Hello, I have built a .NET C# COM component for use in classic ASP applications. When I deploy this COM the only way that I have been successful is to restart IIS after registering in global cache. With my VB6 COM components I was able to register the COM in MTS without restarting IIS. The me...more >>

I'm trying to utilize some COM code (the WM Format SDK to be precise) from a ..NET application and could use some help/pointers on how to interoperate with it. FYI, I'm relatively new to Windows programming and am not familiar with many of the technologies I find in the docs (e.g., OLE, ATL, M...more >>

I'm creating a C# application that uses P/Invoke to call into an unmanaged C++ DLL that in turn interacts with COM objects. Will the use of a xTAThreadAttribute declaration in the C# application have any impact on the COM threading model eventually used by the C++ DLL? And if not, how can I cont...more >>

I am using Interop between COM and C#. I am calling CoCreateInstance to get a COM object. The code is executing inside a service, running as the LocalSystem user This code executes correctly on XP and Windows Server 2003; i.e. the COM object is instantiated and can be used. However, running the...more >>

I am attempting to setup an API that will bridge managed code into an older legacy system. When I follow the directions in MSKB 817248 on exposing a .NET Assembly for COM Interop (or have VS.Net 2003 do it for me) it successfully registers the assembly in COM, however, i cannot create an instance of...more >>

Hi! I've read a few posts allready about this problem, but all of them are inconclusive. I'd really like to know exactly why, and what we should do about it. The context is a .net webform calling a static method on a class which is in turn calling a VB COM+ component which is also used in A...more >>

Hello! DESCRIPTION =========== I've registered a COM DLL containing several coclasses: coclass PlainVanillaObj { [default] interface IPlainVanillaObj; }; [ uuid(AA2715F9-6EF6-40D3-9CFF-04069358221D), helpstring("PathTableObj Class") ] coclass PathTableObj { [default] interfac...more >>

Hello, I have recently started looking into using interop to use Win32 Interfaces such as IShellLink and IDiskQuotaControl etc and I was wondering if there are any differences between making a parameter in a method out parameter or [Out()]parameter Are the two the same ...more >>

Hi, We have a Windows Service developed using C# that is setup to automatically generate Excel reports and copy them to multiple shares based on certain daily criteria. The development env is .NET Framework 1.1, Office XP plus Office SP PIA, VS.NET 2003 on Win XP Professional. We created a ...more >>

Hi I am marshalling a LPTSTR string to a managed string and I get just 30531 characters, rest all is truncated To be more specific, I have writen code to call "GetOpenFileName" from Comdlg32.dll using P/Invoke, so I could create CustomOpenFileDlg which can read any number of files(limited by the...more >>

Hello! I have a c# component which implements the following interface: public interface IFiles { string[] GetFiles(string path, string filter); bool FileExists(string path); } I have it registered for COM and in the GAC so that I can use it from a classic asp client (vb...more >>

Hello I've been assigned the task of supporting the "Insert Object" command in our C# WinForms application, which allows the user to choose an OLE obejct to insert in a RichTextBox which is the main editor in our form I have found how to access the OleUIInsertObject() Win32 API to display the di...more >>

Suppose I have a delegate in C#. class FooForm { public delegate void MyFuncDelegate(int iX, int iY); MyFuncDelegate _myFunc; [DllImport("Bar.dll")] public extern static void SetMyFunc(MyFuncDelegate myFunc); public static void MyFunc(int iX, int iY) { System.D...more >>

Hi I have some old VB6 code and I need to automate some testing from .NET by using the VB6 objects and interrogating the results. The VB6 object basically just does some work and returns an XML string which I need to validate An asp page using the VB6 object would be something like.. set myOb...more >>

I am hosting an .NET Window Control in an HTML page. It works fine until I try to print the page. When printing the page the Windows Control does not get printed. Is there a way to make the .NET Windows Control to get printed or do I have to go back to using ActiveX controls? Any ideas or comments...more >>

When a set a reference to the ADOX library, I can use the objects for database structure manipulation, but I get new errors in other parts of my application, for example, using the Date() function results in error messages. Is ADOX confusing the definitions of other libraries? ...more >>

Hi could anybody can plz explain me why would I get this error mentioned below when I am trying to access COM+ proxy from my C# component. COM target does not implement IDispatch thanx in advance. --RK...more >>

Hello all I just purchased the getright SDK a few nights ago to integrate into a downloader app I'm developing for a company. The SDK comes with a sample C++ app (just source) and a .lib file. The application won't compile in VS.NET 2002 (the documentation says it wants MSVC++ 5 or 6) -- it h...more >>

I am trying to do some modifications to a Word document using VS/VB 2003. I have Office 2003 installed, and I have the PIA's for Windows XP installed. I included a reference to Micrsoft Word 11.0 library, which is an Interop.Word.Dll, and the Microsoft.Office.Core 11.0 dll from the GAC gets ...more >>

Hi, I am getting following error when I call COM interop from ASP page. Error Type: mscorlib (0x80070002) File or assembly name ajcj2njd.dll, or one of its dependencies, was not found. /dom/dom.asp, line 4 If I set the application protection to low in IIS, it works. I tried giving ...more >>