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  • How to marshal a COM-Parameter as VT_ARRAY of VT_RECORD

    - by Oliver Japes
    I've already done some extensive search, but I can't seem to find anything matching my problem. The task I'm currently working on is to create a WCF-Wrapper for some DCOM-Objects. This already works great for the most parts, but now I'm stuck with one invocation that expects a VT_ARRAY containing VT_RECORD-Objects. Marshalling as VT_ARRAY is not a problem, but how can I tell COM that the elements in this array are VT_RECORDs? This is the invocation as I current use it. InitTestCase(testCaseName, parameterFileName, testCase, cellInfos.ToArray()); The parameter I'm talking about is the last one. It's defined as List<CellInfo>, CellInfo itself is already attributed with Guid("7D422961-331E-47E2-BC71-7839E9E77D39") and ComVisible(true). It's not a struct but a class. This is the condition failing on the native side: if (VT_RECORD == varCellConfig.vt)... Because of old software using these interfaces, changing the native side is not an option Any idea?

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  • CAB file for X86 and X64

    - by ramanakumar
    HI I have created a CAB file for an ActiveX component which is wrapper around a .Net Libray. Here the .Net Library is refering some third party components which are actually build in (X86 or X64) No Any CPU. So My Cab file should be intelligent enogh to install eigther X86 or X64 depending on the client ( Browser) I Know the change should be in the INF file. As i am new to thsi Interoperabilit technology. Please guide me in solving this problem. Thanking you.

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  • Using Dynamics AX's Business Conectors to Generate Sales Orders

    - by FelipeFiali
    So, just like the title says, I need to create an application that gets data from another Database, and shoves it through Dynamics AX's throat. This data comes from a portal, not Enterprise Portal, but a PHP one. It stores some data from the order in a separate database. So as said, I need to 'import' that to AX, creating the sales orders with the data I have from the other database. Also I'd like some references on Business Conector too, does it handle all those RECIDS and references that AX uses for me? Thanks in advance. EDIT: OK, I'm able to insert records in AX's database, theres just one problem. I can't generate the internal ID. Like, the 'AccountNum' field for the CustTable. Is there a way to capture it from business connector?

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  • Exposing .NET enums to COM clients{VBScript}

    - by Codex
    Am trying create of PoC for exposing/invoking various .NET objects from COM clients. The .NET library contains some classes and Enums. Am able to successfully access the classes in VBScript but not able to access the Enums. I know that Enums are value types and hence 'CreateObject' wont work in this case. But am able to access the same Enum in VBA code. Questions: How can I access the enums in VBScript? Why does the behaviour differ in the two COM clients? If VBA object browser can see the enum, why cant VBScript allow me to create one? .NET [ComVisible(true)] [GuidAttribute("ebc25cf6-9120-4283-b972-0e5520d0000E")] public enum Currency { GBP = CurrencyConvertorBL.CurrencyConvertorRef.Currency.GBP, USD = CurrencyConvertorBL.CurrencyConvertorRef.Currency.USD, INR = CurrencyConvertorBL.CurrencyConvertorRef.Currency.INR, AUD = CurrencyConvertorBL.CurrencyConvertorRef.Currency.AUD } VBA Private Function ConvertCurrency(fromCurrency As Currency, toCurrency As Currency) As Double VBScript ??? Set currencyConvertorCCY = CreateObject("CurrencyConvertorBL.Currency") Thanks in advance.

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  • How do I return all conflict documents from a Notes Database?

    - by ssg31415926
    I want to get all conflict documents from a Notes database. So far, i've got this: Domino.NotesSession notesSession; Domino.NotesDatabase notesDatabase = this.OpenDatabase(out notesSession); Domino.NotesDateTime dateTime = notesSession.CreateDateTime(String.Empty); Domino.NotesDocumentCollection results = notesDatabase.Search(this.SearchString, dateTime, 0); It works with, for example: searchString = "@Contains(ShortName;\"Bob\")"; How can I do the equivalent for conflict documents?

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  • When does the .NET runtime hold a reference count > 1 for COM objects?

    - by Wim Coenen
    Until recently, I believed that the .NET runtime only increases the reference count of COM objects by 1 when creating a runtime-callable wrapper, and that only one such runtime-callable wrapper is created for any given COM object. If I'm not mistaken, the above implies that Marshal.FinalReleaseComObject and Marshal.ReleaseComObject do the same thing in practice. However, today I was writing some tests to verify that COM objects are properly released by my code. I do this by invoking the supposedly released object and checking for the expected InvalidComObjectException. It turns out that there are cases where the exception is thrown after a FinalReleaseComObject, but not after a ReleaseComObject. Does this mean that the .NET 2.0 runtime can hold more than one reference to a COM object? If so, when does it do this?

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  • Regasm writes mscoree.dll into Registry key InprocServer32

    - by Stiefel
    When I register my .NET Assembly with regasm.exe the registry key HKEY_CLASSES_ROOT\CLSID{111E32AD-4BF8-495F-AB4D-6C61BD463EA4}\InprocServer32 is set to "mscoree.dll". However, I am trying to mimic an existing COM-Server that was written in C. When registering this old COM-server the InprocServer32 is set to the full path to this component. Unfortunately the existing system (a plugin host that I can not change) reads and use this value - an is confused by the "mscoree.dll" value. My solution might be to patch this registry entry manually - but I would like to understand why regasm writes "mscoree.dll" into InprocServer32 .

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  • unable to select correct ADODB version COM API

    - by Ovais
    quick question is the public key token for ADODB dll different for 64bit and 32bit. I am trying to use a COM api which uses ADODB.Recordset and some how I am not able select the right version of ADODB in VS(2010) it asks for 2.8.0.0 and I add 2.8 from the reference dialog. The only thing I can think of is that I am using a 64bit win7

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  • Problems with native Win32api RichEdit control and its IRichEditOle interface

    - by Michael
    Hi All! As part of writing custom command (dll with class that implements Interwoven command interface) for one of Interwoven Worksite dialog boxes,I need to extract information from RichEdit textbox. The only connection to the existing dialog box is its HWND handle; Seemingly trivial task , but I got stuck : Using standard win32 api functions (like GetDlgItemText) returns empty string. After using Spy++ I noticed that the dialog box gets IRichEditOle interface and seems to encapsulate the string into OLE object. Here is what I tried to do: IRichEditOle richEditOleObj = null; IntPtr ppv = IntPtr.Zero; Guid guid = new Guid("00020D00-0000-0000-c000-000000000046"); Marshal.QueryInterface(pRichEdit, ref guid, out ppv); richEditOleObj = (IRichEditOle)Marshal.GetTypedObjectForIUnknown(ppv,typeof(IRichEditOle)); judging by GetObjectCount() method of the interface there is exactly one object in the textbox - most likely the string I need to extract. I used GetObject() method and got IOleObject interface via QueryInterface : if (richEditOleObj.GetObject(0, reObject, GetObjectOptions.REO_GETOBJ_ALL_INTERFACES) == 0) //S_OK { IntPtr oleObjPpv = IntPtr.Zero; try { IOleObject oleObject = null; Guid objGuid = new Guid("00000112-0000-0000-C000-000000000046"); Marshal.QueryInterface(reObject.poleobj, ref objGuid, out oleObjPpv); oleObject = (IOleObject)Marshal.GetTypedObjectForIUnknown(oleObjPpv, typeof(IOleObject)); To negate other possibilites I tried to QueryInteface IRichEditOle to ITextDocument but this also returned empty string; tried to send EM_STREAMOUT message and read buffer returned from callback - returned empty buffer. And on this point I got stuck. Googling didn't help much - couldn't find anything that was relevant to my issue - it seems that vast majority of examples on the net about IRichEditOle and RichEdit revolve around inserting bitmap into RichEdit control... Now since I know only basic stuff about COM and OLE , I guess I am missing something important here. I would appreciate any thoughts suggestions or remarks.

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  • Marshalling a big-endian byte collection into a struct in order to pull out values

    - by Pat
    There is an insightful question about reading a C/C++ data structure in C# from a byte array, but I cannot get the code to work for my collection of big-endian (network byte order) bytes. (EDIT: Note that my real struct has more than just one field.) Is there a way to marshal the bytes into a big-endian version of the structure and then pull out the values in the endianness of the framework (that of the host, which is usually little-endian)? This should summarize what I'm looking for (LE=LittleEndian, BE=BigEndian): void Main() { var leBytes = new byte[] {1, 0}; var beBytes = new byte[] {0, 1}; Foo fooLe = ByteArrayToStructure<Foo>(leBytes); Foo fooBe = ByteArrayToStructureBigEndian<Foo>(beBytes); Assert.AreEqual(fooLe, fooBe); } [StructLayout(LayoutKind.Explicit, Size=2)] public struct Foo { [FieldOffset(0)] public ushort firstUshort; } T ByteArrayToStructure<T>(byte[] bytes) where T: struct { GCHandle handle = GCHandle.Alloc(bytes, GCHandleType.Pinned); T stuff = (T)Marshal.PtrToStructure(handle.AddrOfPinnedObject(),typeof(T)); handle.Free(); return stuff; } T ByteArrayToStructureBigEndian<T>(byte[] bytes) where T: struct { ??? }

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  • Dlls to access Notes and Domino Server Database.

    - by prats
    Hi, I need to create an application using C# such that i can access all the user's mailboxes existing on Server. So kindly provide me the API which will allow me to access each mailbox( nsf files) of each user stored on the Domino Server. Basically i am looking for an API by which i can just provide the Domino Server name through which i can get all mailboxes.

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  • Exposing.NET assembly as COM 101

    - by Jan Zich
    I have trouble to expose a .NET assembly in COM. It seems that I must be missing some basic step because I think I followed all tutorials and documentation I found as well as common sense, but still when I do (in a test VBScript): Set o = CreateObject("MyLib.MyClass") It keeps saying that the object cannot be created. Here are the steps I have done: I have simple one method dummy class with no attributes. The class is in a class library which has "Make assembly COM-visible" ticked in Visual Studio. The class library is signed. The DLL is registered via RegAsm.exe with the /codebase parameter (I don’t want / cannot add the DLL to GAC). Just to be sure, I tried to copy the library to the same directory as the test VBScript, but it does not help. Edit: I should have mentioned that the I can instantiate the class in COM if I put the DLL into GAC.

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  • Passing a string from C# to cpp with COM

    - by Yaron Naveh
    I have a C# COM server which is consumed by a cpp client. One of the C# methods returns a string. In cpp the returned string is represented in Unicode (UTF-16), at least according to the memory view. Is this always the case with COM strings? Is there a way to use UTF-8 instead? I saw some code where strings were passed between cpp and c# as byte arrays. Is there any benefit in this?

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  • Sending Outlook 2007 Meeting Request with HTML Body

    - by Rick Make
    I know that Outlook.ApointmentItem.Body only supports plain and rich text formats. But my requirement is to send the Appointment with a Html body. Currently I am saving the ApointmentItem as an ics file and attaching it to the e-mail. This works but the outcome that I am looking for is that it is received as a meeting request. I.e. I receive this e-mail I can see the body and have the option to respond to the meeting request. I tried forwarding the AppointmentItem as a vCal but that does not work either. I am I headed in the right direction? Thanks

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  • How can I compile some parts of C++/CLI code as Native and some part as Managed?

    - by Usman
    Hello, I am calling LoadTypeLib for loading unmanaged type libraries in C++/CLI. I need to compile some code(some code areas) as managed and some code areas as unmanaged(native) code and form a mixed mode class library as executable. What i need to mention between the lines of code so that whatever the part i need to be compiled as managed should compiled as managed and what part I need to be unmanaged(native) should be compiled as native? Regards Usman

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  • From VB6 to .net via COM and Remoting...What a mess!

    - by Robert
    I have some legacy vb6 applications that need to talk to my .Net engine application. The engine provides an interface that can be connected to via .net Remoting. Now I have a stub class library that wraps all of the types that the interface exposes. The purpose of this stub is to translate my .net types into COM-friendly types. When I run this class library as a console application, it is able to connect to the engine, call various methods, and successfully return the wrapped types. The next step in the chain is to allow my VB6 application to call this COM enabled stub. This works fine for my main engine-entry type (IModelFetcher which is wrapped as COM_ModelFetcher). However, when I try and get any of the model fetcher's model types (IClientModel, wrapped as COM_IClientModel, IUserModel, wrapped as COM_IUserModel, e.t.c.), I get the following exception: [Exception - type: System.InvalidCastException 'Return argument has an invalid type.'] in mscorlib at System.Runtime.Remoting.Proxies.RealProxy.ValidateReturnArg(Object arg, Type paramType) at System.Runtime.Remoting.Proxies.RealProxy.PropagateOutParameters(IMessage msg, Object[] outArgs, Object returnValue) at System.Runtime.Remoting.Proxies.RealProxy.HandleReturnMessage(IMessage reqMsg, IMessage retMsg) at System.Runtime.Remoting.Proxies.RealProxy.PrivateInvoke(MessageData& msgData, Int32 type) at AWT.Common.AWTEngineInterface.IModelFetcher.get_ClientModel() at AWT.Common.AWTEngineCOMInterface.COM_ModelFetcher.GetClientModel() The first thing I did when I saw this was to handle the 'AppDomain.CurrentDomain.AssemblyResolve' event, and this allowed me to load the required assemblies. However, I'm still getting this exception now. My AssemblyResolve event handler is loading three assemblies correctly, and I can confirm that it does not get called prior to this exception. Can someone help me untie myself from this mess of interprocess communication?!

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  • WindowsIdentity Token in Legacy ASP

    - by Max Schmeling
    I've created a .Net library at work that is used by all of our developers. The security part of it uses Microsoft AzMan for the security backend. In order to create a security (AzMan) ClientContext I have to pass it a token value (as a uint). This is all fine an dandy until I needed to make a COM wrapper for our common library so some of our legacy pages could take advantage of it without being rewritten for now. I cannot figure out how to get the token value to pass to AzMan from legacy ASP. The COM wrapper is setup to run as a COM Server and runs as a specific user that we use here for all COM objects, therefor the common library can't just pull the identity using .Net. Any ideas?

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  • Invoke a COM addin option from VBA

    - by rip
    Can I invoke an option on a COM Add-in from a VBA macro in Word or Excel 2007? The COM Add-in was written using VSTO – it adds a custom ribbon tab with a number of options that I want to execute from a VBA macro. I can reference the add-in using Application.COMAddIns("MyAddinName") but I can’t find an option to invoke an option. I’ve also played around with the Application.CommandBars collection, and can see that you can execute an option using CommandBarControl.Execute but I can’t find my command bar in the Application.CommandBars collection. Does anyone know if this is possible?

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  • Need to call COM component using reflection in .NET

    - by Usman
    I need to determine the COM component(unmanaged code) type and invoke the exposed interface's methods using reflection in C# at runtime. First What member of "Type" tells that type is COM component and we can take CLSID at runtime? Is Type.COMObject? I need to call methods of exposed interfaces as they called in unmanaged code using CoCreateInstance by passing CLSID and REFID ... I am using InvokeMember but it returns null or 0 as out parameter. How to pass out parameter in this case.? Is there any need to pass out parameter? As all my COM unmanaged code suppose to take last parameter as an OUT parameter and after executing it puts the result into that out param. But I've converted all my unmanaged COM code to .NET managed assemblies using tlbimp.exe.

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  • ExecutionEngineException thrown when loading native dll

    - by Axarydax
    I have a 32-bit .net application that uses a native 32-bit DLL via DllImport(). The native DLL is our internal file analysis library, and I need to use it as porting it to C# would be a problem if people update it (other software uses it). The problem is that when I try to execute any method in the native DLL I get a System.ExecutionEngineException thrown. In fact, I've reduced the managed application to a simple tester that just calls a native method, but it still fails. I am on 64-bit Windows 7, but that should not matter as I'm compiling everything as 32-bit binaries. What is also interesting, when I look at the native DLL in the Dependency Walker, it shows that it can't find msvcr90.dll - but when I open any other of our native DLLs in the Dependency Walker, it can find their referenced msvcr90.dll just fine. Can there by some wrongness in the compilation of native DLL that messes up its DLL references?

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  • ExecutionEngineException thrown when loading native dll in c#

    - by Axarydax
    Hi there. I have a 32-bit .net application that uses a native 32-bit DLL via DllImport(). The native DLL is our internal file analysis library, and I need to use it as porting it to C# would be a problem if people update it (other software uses it). The problem is that when I try to execute any method in the native DLL I get a System.ExecutionEngineException thrown. In fact, I've reduced the managed application to a simple tester that just calls a native method, but it still fails. I am on 64-bit Windows 7, but that should not matter as I'm compiling everything as 32-bit binaries. What is also interesting, when I look at the native DLL in the Dependency Walker, it shows that it can't find msvcr90.dll - but when I open any other of our native DLLs in the Dependency Walker, it can find their referenced msvcr90.dll just fine. Can there by some wrongness in the compilation of native DLL that messss up its DLL references?

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  • Excel Object in asp.net

    - by Xyz
    Hi I have a serious issue. I am using excel object for opening the excel file it works fine i my PC. when i make application as a website and running the page and uploading it gives the error "'C:\Documents and Settings\Administrator\Desktop\Work\SABRE MSO Mapping Request Template.xlsx' could not be found. Check the spelling of the file name, and verify that the file location is correct. If you are trying to open the file from your list of most recently used files, make sure that the file has not been renamed, moved, or deleted. ". I think it taking server path...but i want to open client excel file before saving the file to the server. Plz help.

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  • Making a COM dll to be invoked from c#, HRESULT error handling?

    - by Daniel
    I'm making a COM interface that c# will be using, however i am wondering how i am to check for errors and exception handling on the c# end as at the moment i am just returning a HRESTULT or bool for most methods. But several things can go wrong in some of these methods and returning a E_FAIL just doesn't cut it. What can i do in order to return more information? Can i make a HRESULT of my own?

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