As I understand it, each program gets its own address space, divied into the stack and the heap. I initially assumed that for a .Net application the entire heap was managed by the garbage collector. However I keep comming across references to the 'managed heap' and from what I've been read...more >>

Hi, friends, Besides using tlbinf32.dll, how to register/unregister a .tlb in C#.net? We used tlbinf32.dll like the follows, TLI.TLIApplication regLib = new TLI.TLIApplicationClass(); regLib.TypeLibInfoFromFile(tlbfilename).Register(null); but, it turned out regLib did not release refer...more >>

Hi, I'm trying to call methods on a plain DLL using P-Invoke, but I don't know the DLL or function name until runtime. So I'm using DefinePInvokeMethod, Reflection.Emit and delegates to call it. The function executes OK, but the results are never returned. To demo the problem, the code b...more >>

Hi, this is the first time I'm using "inverse P/Invoke". I need to build a plugin for a unmanaged application. This application is needing three functions. One of the function (#Configure) has to be called like this: int Configure(HWND iu_parentHandle,char **iop_config, const int ini_s...more >>

Hi, I'm trying to use WinHttpGetProxyForUrl (1). At the end of the post is a sample program, which reproduces the problem, and a reference to articles I used to build my test. Now, the environment: Win2K SP4 (with all last patches), .Net framework 1.1 SP1, VS.Net 2003, C#. So, I have cr...more >>

Hello All- I wrote a ASP.NET web service for automating Word document creation based on WordML templates. I have this all working using Word Interop's Find and Replace funtionality to replace my placeholder text from the template document with the actual data from my database. We were hopin...more >>

Hi, When the user opens a file in the SharePoint document library, we plan to catch up and handle that "Open" event. Here is a helpful article we found out: Adding a Document Template, File Type, and Editing Application to a Site Definitio http://msdn.microsoft.com/library/default.asp?url...more >>

Hi, I am trying to write a C++ wrapper class using MC++ that wraps calls to a dll that exposes a C API. I have found several examples of marshalling struct data between managed and unmanaged code where you have to pass a struct full of data to an unmanaged code function. I have a slightly ...more >>

Hello All, I have to call a C API function decalred as: ing GetParameters(int DeviceID, BSTR *ParametersXML) I tried to do this using the following DLLImport: <DllImport("avlcontroller.dll", EntryPoint:="GetParameters")> _ Public Shared Function GetParameters(ByVal DeviceId As Integer, By...more >>

We are attempting to run .NET code from out VB6 SP6 Application. This is working fine in our Windows XP / 2003 test environment, but is failing in our Windows 2000 SP4 Environment, and we are at a loss. Broken Environment: Windows 2000, SP4 MDAC 2.8 ..NET Framework 1.1 sp1 Working Envir...more >>

Hi Everyone, Wmvdmod.dll (version 9.0.0.2980 fault address 0x0007b8f2) is throwing an error that is causing my C# application to display a dialog box and then crash my program. This dll is a windows media player object that I have brought into my c# app using VS.NET 2003. Does anyone kno...more >>

Hi, I want to marshal a structure that contains an embedded structure. The C++ definition for the struct is: typedef struct mpeglayer3waveformat_tag { WAVEFORMATEX wfx; WORD wID; DWORD fdwFlags; WORD nBlockSize; WORD nFramesPerBlock; WORD ...more >>

hi everybody! i'm looking for a solution to my issue. This one is that i use OWC11 to connect to my OLAP cube. But when i tried to add a pivotfield, it returns an error message. this message is: System.Runtime.InteropServices.COMException(0x80028CA1):Number of arguments is not valid. at ...more >>

Is it possible to use the Windows clipboard from an managed MTA process? I have a web service that runs in the MTA that needs to copy some HTML to the clipboard to use in Word. When I try copying to the clipboard (Clipboard.SetDataObject()), I get a thread exception (I need to be in the ST...more >>

>From what I've read, a RCW or type System.__ComObject represents a generic RCW. What I don't understand is why I'm getting that type instead of a strongly-typed RCW in my interop code: Dim comType As Type comType = Type.GetTypeFromProgID("MyComLibrary.MyComClass") Dim genericComObject A...more >>

I have converted a VB dll to .Net dll. This VB dll had several other VB dlls as dependencies. When I call the .Net version of the dll and one of its function, this function calls a function from the dependencies. The instantiation of the object fails of the dependency dll- is it because I need...more >>

I am using the Word interop libraries (.NET) shipped with Office 2003. I have written a C# client that is trying to paste contents to the Word clipboard, but for some reason, the clipboard is always empty (from Word) after I paste it. Is there a different clipboard per thread or process? ...more >>

Hi all I am new to vb.net I want to call com dll in vb.net When i add reference of com dll in .net application, new dll starting with interop is getting created. Then i tried with using tlbimp.exe to create metadata dll My question is after generating metadata dll is it necessary to add refer...more >>

Hello, All! I need to create a pinned GCHandle for CRYPT_SIGN_MESSAGE_PARA structure from CryptoAPI. When calling ParaPin = GCHandle.Alloc(Para, GCHandleType.Pinned), the ArgumentException is raised with comment "Object contains non-primitive or non-blittable data.". As far as I understa...more >>

Hello, I was wondering how to create a drawing in excel which is similar to the chart. Say I just want to create a control on a Sheet that I can resize and move around and there would be something drawn on the control. Thanks, Victor ...more >>

I have a .NET app that uses COM objects. I am getting a lot of asserts from the COM code that indicates that objects have not been released. I'm thinking this may be okay because the garbage collector is going to get rid of these things anyway, but I'm not sure. I'd like to verify that this is...more >>

I have to interface with a C Dll (not mine, 3rd party) that I have no vb.net declares for, so I'm having to create them. I'm having a little trouble translating some of the types. The C Dll call: int LS1 (HWND hwnd, HANDLE hInst, SHORT s1, SHORT *s2); I am having trouble translating the ...more >>

Hello, I seem to be having some trouble using custom types in my methods which are being accessed by com clients. I want to access my .NET component "InventoryServiceClient" from VB6 / ASP code. 1.The method SayHello() works fine. 2. The Method DoThis(MyTest) fails with an "invalid procedur...more >>

I have a VB.NET Class Library with the "Register with COM Interop" option checked. As I understand it, this creates a *.tlb file and registers my COM classes with the registry. Whenever I recompile the IDE takes care of unregistering and reregistering my COM classes. This is the automatic...more >>

Following the directions in this KB article, I created a .NET Usercontrol: How To Use the WebBrowser Control to Open Office Documents with Visual C# .NET http://support.microsoft.com/default.aspx/kb/304662/EN-US/ Then, using sn.exe, I created a .snk file and attempt to build the assembly, ...more >>

Hello All! I'd like to be able to force all outbound traffic to a proxy server without relying on the browser's proxy server configuration. I'm not using Microsoft ISA server or Microsoft Proxy server, so I can't use their built-in facility to do this. Is there a way to accomplish this using t...more >>

After adding an AxWebBrowser control to my C# app, the program became very slow to start from within VS.Net. Stepping through with the debugger shows that the following line ((System.ComponentModel.ISupportInitialize)(this.webBrowser)).EndInit(); consistently takes 45 seconds to complete (o...more >>

Guys I have a problem with deployment of a com interop component which I have written in vb.net for use within our main vb6 project. I have checked the "Register for Com Interop" option within the Project Properties/Configuration Properties/Build tab. The target machine has the .net runtim...more >>

hey all i've got an unmanaged c++ library, and a wrapper class for it. One of the functions i need to use requires an IntPtr to a function to be used as a callback function. here's the prototype: [DllImport("Alksdk_dotNet.dll",EntryPoint="Msg_SetCallback",CallingConvention=CallingConvention....more >>

I've just been reading a few articles on how Managed Extensions are now obsolete! Tough thing to hear, as I've been spending every spare moment studying them to try to solve a problem. I'd like to get up to speed on this as quickly as possible, and find out how the new CLI approach relates to...more >>

Hi All, I used windows installer (msi.dll) COM inside c# using IDE generated interop. Firstly, I ran into the problem of the hidden CoClass and found an answer here: http://groups-beta.google.com/group/microsoft.public.dotnet.framework.interop/browse_frm/thread/a058417808a3be15 And it wor...more >>

I have a very large memory buffer (500 Mb) that I would like to access from both C# and unmanaged C++. - Is it possible to access (read) unmanaged memory from a C# unsafe block, through a pointer? Thank you very much, Teis ...more >>

Greetings: I have a situation we had developed an application using .net2003 while VB 6.0 were installed we had used the old flex grid in developing the .net application now we are using a terminal without vb6.0 installed so we are unable to use the grid because we didn't install vb6.0 .......more >>

Hi, I have a .Net Web Service and the encoding of the SOAP Messages is always UTF-8, and I need to change the web service so that it encodes with ISO-8859-1 because it’s the only encoding my web services client supports. I've updated my web.config & machine.config Globalization requestEn...more >>

Hi, I am populating a records fetched from a select query in OleDbDataReader. The datbase is MS Access, The datatype of the select query column is Text. I want to read the data as Byte array instead of string as Reading it into a string causes it to be converted to Unicode which is do not wan...more >>

Issue: When I am opening a word document or a template from an ASP.NET Web page (language used VB.NET Visual Studio Version 2003) using Word.ApplicationClass object (Reference Word 11.0 object Library), I am getting the following error: could not open macro storage (System.Runtime....more >>

I have an unmanaged AVI movie loader that is wrapped in a managed class in order to use it from C#, the IJW way. Everythimg works fine. Problem: Now, I want to move the FileOpen Dialog to C#. Thus, I need to convert the file path from a managed "String *" to a "TCHAR *" or a "LPCOLESTR". How ...more >>

Hi, I am using System.Diagnostics.Process to launch (shell extension) a process. I have forms in my application that are specified as "top-most" but I would like my launched application to be top-most of those forms when it arrives. At present, it isn't. I have the same trouble with Micros...more >>

I'm trying to get a proof of concepting working before proposing a solution to my supervisor. My little experiment is to get a VB6 form to load a .Net class library and interact with it. The .net class library must contain a ..net windows form. I'm using VB.NET (2003), VB6, and 2 Virtual ...more >>

Hi, I develop an application, what would create an Excel table. On the machine where I develop, I have Office2003 installed, but the client has only OfficeXP. How can I refer to the OfficeXP PIA, if I don't have the older dll's? What I can refer to is only the v11 DLL, what will not work at...more >>

I am trying to call a dll with an exported function with the following signature. int MessageToCAM(UINT nAction, BYTE** sMessage, UINT* pnSendLen, BYTE** rMessage, UINT* pnRecvLen); I have tried to the following function declaration. Private Declare Ansi Function MessageToCAM Lib "remote....more >>

I'm attempting to access a dll written in VB .Net 2003 from VB6. The .Net class is shown below: Public Class Application Public Function GetName() As String GetName = "My name is John Doe" End Function Public Sub Application() End Sub End Class I compile...more >>

Hi there, Is there a way to create a DLL, written in C#, that can be referenced/used by VBA without the necessity of installing the Framework on all the "Excel-PCs"? TIA, Martin@Vienna@Austria@Europe ------------------------------------------------------------------------- to get my r...more >>

I am trying to pass an array from a C# app to a C++ DLL. The interface on the DLL is defined as PassData([in]int ElementCount, [in, size_is(ElementCount)]double* dataSet1, [in, size_is(ElementCount)]double* dataSet2); I have read the MSDN help about the "Default Marshaling for Arrays"...more >>

Hi , I have a .net assembly that references interop (COM Compoonent) for calling DTS on SQL Server. I added "Microsoft DTS Package Object library (dtspkg.dll)" by using Add Reference in Visual Studio.Net (COM TAB).. I need to have strong name for my .Net component which gives an error since...more >>

Hi, I've written a function to get values from an Excel sheet to VB.Net: .... Dim sheet As Excel.Worksheet = xlWorkbook.Worksheets("Liste") Dim folder As String = sheet.Range("M2").Value This worked great in Excel XP, but in Excel 2003 I'll get an error: "object reference not set to an in...more >>

Hi , I have a .net assembly that references interop (COM Compoonent) for calling DTS on SQL Server. I added "Microsoft DTS Package Object library (dtspkg.dll)" by using Add Reference in Visual Studio.Net (COM TAB).. I need to have strong name for my .Net component which gives an error since...more >>

I'm building Mixed DLL (C++ managed + unmanaged code) as a wrapper for a native DLL, to make it available to .NET-assemblies. After experiencing problems with "LNK2020 unresolved token ..." I finally got aware of the "Mixed DLL loading problem" described in - (1) http://support.microsoft.com...more >>

Hi All, I have a threaded application/tool, where I have to access files on remote computers by different threads and I have to autheticate. In a commandline tool I would use "net use x: \\foreigncomputer\admin$ /user:domainA\userB password" to establish a secure channel and then modify the fi...more >>

Hi [DllImport(Win32DLL, EntryPoint = 'LoadReports', CharSet = CharSet.Ansi, CallingConvention = CallingConvention.StdCall)] This works on my test Windows 2003 machine however now that I deployed my web application on another Windows 2003 Server it no longer works. Error : Unable to Load ...more >>