Hi, I'm building a VSTO solution for Excel. When trying to use dataset designer to create datatables and tableadapters I get into trouble: VS 2005 won't connect to Excel! In the Add Connection I use this driver:Microsoft ODBC Data Source (ODBC) I choose 'Excel files' and the connection seems ...more >>

I have two server Server A) Production Server with Windows 2k3 64Bit + Comos Server B) Development Server with Windows 2k3 32 Bit + Visual Studio 2005 + Comos Comos is the software where the dll is from. With the command on Server A) TlbImp "C:\Program Files (x86)\Comos\ocx\comos.dll" /...more >>

We have built an ASP.NET C# web application, which is used in the intranet and uses the Microsoft.Office.Interop.Outlook.dll to interface with Microsoft Outlook installed on the users machines. For the ActiveX to work properly, the users need to enable the "Initialize and script ActiveX controls...more >>

Hi, I’m trying to add an Index PrimaryKey in one table with no success. in the code below the Fields.Append don't exist and give me error. DAO.TableDef OBJTable = DAO_DATABASE.TableDefs["Table"]; DAO.Index OBJIndex = OBJTable.CreateIndex("PrimaryKey"); OBJIndex.Fields.Append(OBJIndex.Crea...more >>

I would like to have my ActiveX Control (User Control in C#) that has a GUI be hosted in COM+, is this possible? I have to set ComVisible(false) on the Class in order for it to regasm, and regsvcs correctly, however then it doesn't show in COM+ under the applications interfaces. The idea w...more >>

Hi, I have written a small test application, where I integrated a c# forms-window in a mfc-application via COM Interop. Everthing is running very well, but if I use Drag&Drop from the MFC-part to the C# window I got a debug ASSERT in the destructor of the CCmdTaget-Class, which is the basecla...more >>

Hello! I have registered a C# private assembly with two versions (using regasm), so that the registry contains entries like this: ....\InprocServer32\1.0.0.0 <= I want this ....\InprocServer32\1.0.2819.34866 <= unfortunate mistake This was before I fixed the ass...more >>

Hi, ..NET form itself loads ok but when I bind the DataSet to the report viewer I get a "Can't find entry point" error. e.g. CRreportViewer.SetDataSource(MyDataSet) throws an error. Any ideas on how to get around this one? Thanks, PGC ...more >>

I've been reading through the MSDN docs and just can't seem to find an answer to my question. What I'm trying to find out is whether it's possible to introduce C# into our C++ application. I don't want to do this via a DLL but instead would like the C# code to be statically linked in the exe...more >>

I am getting a strange System.StackOverflowException exception when my COM object fires an event in to my .net code. The call stack is only about 10 items longs so its not the standard infinite loop. What else would cause this? Is there a way to see how much stack space is taken up and wh...more >>

Hi, I have a VC++ COM DLL which is making calls to C#.net DLL. The C#.net DLL functions which are byte array expecting SAFEARRAY from VC++ DLL. VC++ DLL get called from my VB client where I need to pass this SAFEARRAY as VARIANT to VB. Could anyone help me how to get byte array from C# int...more >>

Having spent years using Visual C++, I'm a relevent newbie to .NET./ I'm fairly comfortable with teh new programming environment, but the one area that I constantly struggle with is calling legacy VC DLL's (straight Dll's, not extension Dlls). Using www.PInvoke.net I usually find an equivalent...more >>

I went thru the steps in the microsoft article http://support.microsoft.com/?kbid=302901 and created an Outlook addin. Now I don't know how to get rid of it. I tried running regsvr32 /u with the path to the addin in the debug directory but got the following message: "MyComAddin.dll was loa...more >>

I've got a managed dll that does certain remote operations and a client app. They are both written in c#. How do I implement a callback method in the client app for the dll to call when the remote ops state changes. Does it involve using delegates on the client app? And how to do the sa...more >>

I have a very simple (I think) question: How do I convert a unmanaged GDI+ bitmap into a managed GDI+ Image? The code is C++ CLI (.Net 2.0). There is another option, the Bitmap is being generated by calling it's function UnlockBits() that takes a unmanaged Gdiplus::BitmapData structure. Is i...more >>

Using DX8, I am developing a VS2005, VB.NET program to record audio from with the mic or phone line in. As a starting point, I found a tutorial and examples on DirectSound written is VB6. When I try to convert that program to VB.NET I get run time errors on the following code (frmDX_Record....more >>

i'm using the clipboard and drag&drop to transport data (in its native format) whithin my application. now i would like to provide this data in other formats (like text and csv) to other applications. however, i don't want to convert the data into the other formats already at the moment when i...more >>

Hi Cannot register assembly "XXX". Could not load file or assembly 'YYY, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null' or one of its dependencies. The system cannot find the file specified. I've created a VS 2005 Windows Forms app and have had similar issues (both during compiling...more >>

Here is the error I am getting. Anybody know what I need to do to this component? Do I need to register it? It won't let me regiter it. (see previous post) {"Class not registered (Exception from HRESULT: 0x80040154 (REGDB_E_CLASSNOTREG))"} [System.Runtime.InteropServices.COMException]:...more >>

I'm getting the error message "Class not registered (Exception from HRESULT: 0x80040154 (REGDB_E_CLASSNOTREG))" I have an interop component that a vendor sent. I get the following error when I register that component in the debug directory: AxInterop.ISITELib.dll was loaded, but the dllRegist...more >>

Hello, What is the siplest way to convert a System::String to un unmanaged array of ASCII char[]? thanks in advance Pascal ...more >>

Hi, I have generated TypedDataSet (TDS) from a xml schema and need it to be used by a legacy application. I would like to know if TDS can be interoped with using interface? Your reply is much appreciated ...more >>

Hi, I'm new to COM Interop. I need to pass custom objects from .NET wrapper class to VB6 component. The .NET object contains various data types. Basically something like "ID and Name" fields for one object and the second object contains "id, name, alias, controltype, required, defaultvalue...more >>

Hi, I'm trying to access a struct pointer from a ATL COM DLL. The Signature of the function in C++ end is like - C++: STDMETHODIMP Ctest::GetPtr(DataRecord** pstData) I have added the DLL as a referance in the project and trying to access from C# like that - IntPtr ds = Marshal.AllocHG...more >>

I read a lot of threads trying th solve the problem but with no success. I have my own very simple .Net com (C#). In the project properties I set "Register for COM interop", so all the registration is done. In my client code I had: Type myComType = Type.GetTypeFromProgID(ProgId,"",true); Objec...more >>

I am develloping a .net application using excel automation. Me and my colleague are having trouble with the excel reference. When i add the reference and he does a get-latest, the excel reference is not found and the app wont compile. If he add it again and i do a get latest i have the same ...more >>

Hello, I understand that the .Net runtime will sometimes try to release the result of unmanaged function calls with CoTaskMemFree. What happens if this memory has not been allocated with CoTaskMemAlloc? In particular, if the result pointer lies within the unmanaged (malloc) heap, is it s...more >>

Hi I have a legacy product written in C++ with a class - Protocol - containing a method - int Send(LPCTSTR data). I would like to call managed code with this funtion as a callback. The Idea is that managed code is given a filename which it then open, process and send it back to a client...more >>