I have a VB.NET DLL, which contains a class I instantiate from a VB 6.0 application. The instance is named NetTest, and functions very nicely. When I'm through with it, I execute this line of code in VB 6.0: Set NetTest = Nothing I can step through the code and see this line executing. ...more >>

Hi everybody I am using the WM9 Encoder SDK in C# and have created an encodin application My piece of software is (was) working fine for weeks now, encodin WMV's and AVI's into WMV's ... just fin Now I have found an .avi movie that my encoder does NOT want t encode My Encoder.PrepareToEncod...more >>

My VB6 app was a single instance ActiveX EXE. This meant that multiple applications could connect to the single instance to control it. After porting to VB.NET, how do I get this same functionality? I have tried adding a COM interface to the app, but when the class is created, a new class is created...more >>

I have problem with my project with respect to "out of process" controls. One of these controls is the WebBrowser control and the other an in-house OLE control that has had the ActiveX interfaces bolted onto it to try and get it to work with VB.NET. When I attempt to use either of these contro...more >>

Dear all, I use Visual Studio .NET 2003 and C# to create an Excel Add-In. I always run in the same problem when I want to test if a named member in a collection exists. The only way I get it running is with exception handling. For just checking "if" something exist, I think it is not too nic...more >>

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Hi All! My manged code has to sign created assemblies programatically. I have found handy function provided by .NET Framework Unmanaged API - StrongNameSignatureGeneration. I experimented with it but despite success return values assemblies a...more >>

I thought my C# COM handler could take all variety of VBScript string parameters when I used code like the following: public void COMFunc(object strParam) { string str=strParam.ToString(); } But although it worked for strings and null values, it turns out not to work with ADO strings. ...more >>

Dear All, I have a COM+ component that returns an ADODB.Recordset. In an include file that is included by an aspx page I assign that returned recorset to an ADODB._Recordset. Unfortunately, this assignment breaks and after many days I still couldn't figure out why. Therefore, any help is highl...more >>

I have been working on an ActiveX control in C#. It is packaged in a Windows Control library and the code is in a user control. The control is used as an automation receiver that is used to update a page dynamically through the use of event listeners in javascript That works, the problem is that wh...more >>

Hi, I'm trying to read raw input from a HID-device. I have tried both C# and VB.NET with no success. Right now I'm trying to list the raw input devices using GETRAWINPUTDEVICELIST. My problem, I think, is that the function GETRAWINPUTDEVICELIST needs a pointer to a structure called RAWINPUT...more >>

Is there a more elegant way to solve the authentication problem when using COM components in ASP.NET application? I have found some tips on how to solve this issue, but the only one that worked to me was setting identity impersonate element at web.config file to a valid user. The problem of this ...more >>

I had created a class library which return ArrayList or has ArrayList as a parameter. After interop, inside type library, i.e. VARIANT_BOOL SetDomain([in] _ArrayList* agentObjects); How can I use it in C++ client? I fail to find any matched type. Thanks a lot!...more >>

I am needing to know how to translate the VarArrayCreate method in Delphi into c#. Let me step back and explain the scenario I am in the process of converting a Delphi program over to C#. The ActiveX component is Tidestone's F1Book spreadsheet that was developed prior to the .Net craze. And, of ...more >>

Hi I am looking to get the NT Groups a user belongs too, using VB.Net. Our systems are not Active Directory Service enabled (NT 4). I have trolled the web and can find very little example code on how to do this in VB.Net I would be very grateful if you could provide me with some snippet of...more >>

I have a structure I want to marshal to and from a byte array. But I find the process is shortening my strings by one byte, and a zero byte replaces it. And also byte arrays are shortened by one element, and a zero byte replaces it. I would like to avoid the zero-byte replacements in both ca...more >>

Hi all, I have a web application (asp.net) that is communicating with an embedded windows control (local ctrl) hosted by Internet Explorer. I have been passing data and raising events fine via Interface programming (IDispatch). However, the only data I've been passing has been strings, bool, and ...more >>

Hello I have a COM Interop problem I am using reflection ( typeName.InvokeMember(methodName BindingFlags.InvokeMethod, null, object, args) ) to do late bound calls to methods on a COM object. Most of the time this works fine: occasionally (and unpredictably) however, I get a COMException "Unab...more >>

I'm trying to work out the best way of handling the following situation. I have a class which instantiates a COM object in its constructor and calls an Advise method on it (the object does not implement the usual connection points interfaces so I can't just listen for events as I would like to)...more >>

In a managed class implemented as a com object, I want to pass a window handle from the client into the com object and use it as the parent of a form shown as a dialog. How can I convert the handle (passed as a long) into a IWin32Window object ...more >>

We're having problems passing arrays from ASP pages to .NET (Interop) classes. Let's assume that we just want to pass a string array (byref) from ASP to .Net. The first problem is that unless we declare the array as object[] in .Net, we get a error from ASP. This may be a mistake, but let's conti...more >>

Hi, I think is possible to call a .NET library (managed code) from a Win32 library (unmanaged code) if the NET library is COM registered, is it true? Any way, is there any other way? Thank you in advance, Edgar...more >>

Hi, I'm doing some COM Interop against SAPI 5.1 using an Interop Assembly. Many simple things are working fine - the Word & Sentence events fire well. However the Audio event does not fire at all meaning I can't add a VU meter I have specified the required event in the EventInterests pro...more >>

Hi People, I'm having trouble passing a Windows Handle ( regardless of whether it is a Bitmap or Printer Handler ) to the MSHTML Active X control's IHTMLElementRender interface to the DrawToDC() method using C#. The first approach that I did was to use the RemotableHandle structure exposed ...more >>