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 >>

Hi I have an NT service, which keeps track of clients that connect to it and subsribe for events, which are fired using connection points. NT service stores event cookies, passed to it when a client makes a standard advise() call. I wrote my original client using ATL classes, data sink. I explici...more >>

Hi all, I need to convert a VB6 program that appends menu items to the control = menu (SystemMenu). I was wonder if the framework has intrinsic = functionality for this or must I continue to use win32 calls? Thanks, Mike...more >>

Hello, Can anyone suggest how to handle th following problem: 1. I've changed userName and password attributes in <processModel> in machine.config to make aspnet_wp.exe run under my local account. 2. But now the following code in my .aspx fails with exception: using System.Web.Mail; Sm...more >>

Hi All, i want to extend the schema of Users in AD and want to add some custom attributes through c# application. Unfortunately after a lot of searching also i am not able to find the proper things. If somebody is having c# code snippts then please provide it. My requirement is to extend th...more >>

Hi, I've hosted a web browser control in my c# application having no problems. I've implemented and associated to the active document a IDocHostUIHandler implementation. With html documents there's no problem: the external property of the jscript window object contains an instance of the de...more >>

Hi, I need to send the pointer of a C# method to a native user32.dll method. How can I do that? To be specific - the method is SetWindowLong of user32.dll which in VB6 is being is being called as follows - glOldWindowProc = SetWindowLong(glWindowHandle, GWL_WNDPROC, AddressOf WndMessage) ...more >>

Is there a way to late bind to a win32 api call. I want to call a WIN32 API function from C# but if the dll does not exists or the security settings forbid it or its running on another OS, I want it to gracefully recover. Is this as simple as putting a try catch around the method call? Or if ...more >>

I'm writing a managed wrapper for some unmanaged C++ Code. It is important that the unmanged Objects have some references to its managed wrapper. How can I store the address of an managed Object* in an Integer Value. I tried it this way: Object* obj = new Object(); GCHandle h = GCHandle::A...more >>

Hello, I have this following C structure : typedef struct aps_trc_ { s_aps_compte_ compte ; char opers[APS_SIZE_CODES] ; s_aps_montant_ amount ; char instspecs[4][79] ; e_aps_tdsstate_ flagetati ; char ...more >>

Hello, I've looked, and can't find the solution. I'm hoping someone here could help. I've got a .NET component that I'm accessing from both .NET clients and unmanged C++ clients (via COM interop). The component has several overloaded methods (for example "void write(int, string)", "void w...more >>

Hi NG How can I get the Window-Handle of the EditBox in a ComboBox? Thomas Bock ...more >>

Hi - are there any examples of reading the NTFS change journal from dotnet? I have been trying to use the FileSystemWatcher, but unfortunately, it doesn't seem to notice files being moved - just the deletion of them :( Many thanks Lee...more >>

I'm trying to pass a 1D array from a COM object built using VC++ 6.0, into a .NET web-service in C#, using COM interop. However, only the first element in the array is returned The IDL definition for the COM method is shown below [id(11), helpstring("method GetArray")] HRESULT GetArray([in, ou...more >>

Sorry for the double post here, but I've got a clearer explanation of the problem Here is my problem. I'm trying to make a call into an unmanaged dll through C#. Here is the prototype of the unmanaged function: void MyFunc(PCWSTR a, PCWSTR b, PWSTR* c); Here is how I am currently making the ca...more >>

Hello, I have and ATL COM dll that implements a bunch of com classes that are related as parent/child. For example in VB code it looks like this: Task.Name = "Task" Task.Timing.nRepeatRate = 0 Task.Timing.nRepeatStandardDeviation = 0 Task.Timing.nNumRepeats = 0 "Timing" is a "get prope...more >>

My automation object (COM) wants a safe array of DWORDS passed into it, but VB.NET tells me what I'm passing in is invalid. I assumed all basic arrays in .NET were implicitly System.Array's and that the marshaller would automatically convert it to the required SAFEARRAY. This appears not to be ...more >>

Hi' (using vb.net) I need to interact with Outlook. In the "New Message" form, I want to add a textbox where I can type in a customer name, have some vb.net code search for the Customer ID, save the message in my sql database and then send it. Is this possible to "interact"/addon to ...more >>

The following C++ snippet, taken from Q196340, outlines how to go about accessing the WebBrowser object model of subframes. I'd like to take advantage of this in a C# based Windows.Forms drill down app, but I have no idea how to mimick such an approach given an instance of AxSHDocVw.AxWebBrowse...more >>

Does anyone know how to Automate MS Word Mail-merge with C#. I found an article on msdn about this but it doesn't seem to work ...more >>

I want to transform a big MFC aplication to C#. In Visual Studio, in addition to the existing MFC application project, I created a C# Class Library project as a container for redefined Classes that should be used instead of some of the old C++ classes. Now the problem is that, as long as there...more >>

Hi, I'm trying to create a simple ATL 7.0 object that passes back reference parameters. IDL: ----- parameter "[in] INT nValue" works great... paramter "[out, retval] INT * nValue" doesn't work in this context code snippet ------------- STDMETHODIMP CIbmCLibWrappe...more >>

I have a C# app which I have two interfaces defined. One interface is inherited from the other interface. When I use the TlbExp, both interfaces inherit from IDispatch rather than just one of them. Here is an example: This is the entry in my C# file: public interface ILoisInterface : ILoi...more >>

First off, if this would be more appropriately posted in another group please let me know. I thought I would post here since this issue has to do with COM. I am developing a Word add-in that searches a document for a list of words and processes the locations of the hits as a list of Word.Rang...more >>

We are using a custom exception for our error handling in COM+. We have implemented the serialization new constructor and the GetObjectData() function so that serialization can occur with our class (and seems to work). However when our custom exception is thrown by our COM+ component it always see...more >>

Hello, I'm trying to retrieve a string value from an API call that returns an array of null terminated strings. Each string (i.e. line) is terminated by a single null character and the entire string is terminated by two null characters. Typically, I use the StringBuilder type to return strin...more >>

Hi I am trying to implement a SIP client on RTC 1.2 with c when I try to create a profile it gives cast erro please help me to create a profile and register the presence on the serve ...more >>

I am trying to create a .wmv using the Media Encoder SDK (v9) in C#. I am having problems wit source groups that have graphic (.bmp, .gif and .jpg) files. According to the "Using a File as a Source page in the documentation "C:\WMSDK\WMEncSDK9\wmencsdk.chm", plug-ins for .bmp and .jpg are includ...more >>