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If you create a COMClass, I've noticed that the values in the XML Summary tag do not show in the object browser of VB6/VBA when you reference the resulting tlb file. Is there a way to have these values show up? Hans Passant No, 12 years of IntelliSense evolution prevents this from working. The XML documentation comments generates an .xml file that IntelliSense can pick up. In VB6/A, documentation is present in the type library with the helpstring attribute. For example: [ odl, uuid(2334D2B1-713E-11CF-8AE5-00AA00C00905), hidden, dual, nonextensible, oleautomation ] interface IVBDataObject :

What is the difference between $ie.Navigate("URL") and $ie.Navigate2("URL") ? Get-Member says: Navigate Method void Navigate (string, Variant, Variant, Variant, Variant) Navigate2 Method void Navigate2 (Variant, Variant, Variant, Variant, Variant) Sample Code: $ie = New-Object -ComObject InternetExplorer.Application $ie.visible = $true $ie.Navigate("www.stackoverflow.com") #or $ie.Navigate2("www.stackoverflow.com") The difference is in the first argument URL . Here is what MSDN says: Navigate Method URL: A String expression that evaluates to the URL, full path, or Universal Naming Convention

Question summary When I use VBA's VarType function, passing it an instance of the Object class available in a mscorlib.dll library reference (a .NET library reference), the value returned is 8 . According to VBA documentation here , this means the object is a string. This seems ridiculous. My question is why is the VarType function returning a string-type value for instances of this Object class from the .NET-library VBA reference? Is it a bug? Background information I suspect that the fact that VBA's VarType function is saying a certain COM object is a string, may be why I'm having problems

I'm trying to convert a wchar_t * to BSTR . #include <iostream> #include <atlstr.h> using namespace std; int main() { wchar_t* pwsz = L"foo"; BSTR bstr(pwsz); cout << SysStringLen(bstr) << endl; getchar(); } This prints 0 , which is less than what I'd hoped. What is the correct way to do this conversion? You need to use SysAllocString (and then SysFreeString). BSTR bstr = SysAllocString(pwsz); // ... SysFreeString(bstr); A BSTR is a managed string with the characters of the string prefixed by their length. SysAllocString allocates the correct amount of storage and set up the length and

In my asp.net application I am calling one com component method using Interop dll. This is working fine in normal condition but In production sometimes its throwing below exception System.Runtime.InteropServices.COMException (0x80010105): The server threw an exception. (Exception from HRESULT: 0x80010105 (RPC_E_SERVERFAULT)) I am suspecting that this is happening when large number of users are accessing same page simultaneously. Is somebody know solution or steps to debug this issue. I have another question. while searching on internet I came across this aspcompact attribute and MTA vs STA

I'm trying to run my application on a server which does not and will not have Office installed on it. using EXCEL = Microsoft.Office.Interop.Excel; ... EXCEL.Application app = new EXCEL.Application();//Exception thrown here The code is working fine on my own system, but on the server it gives the following exception: Unhandled Exception: System.Runtime.InteropServices.COMException: Retrieving the COM class factory for component with CLSID {...} failed due to the following error: 80040154 Class not registered (Exception from HRESULT: 0x80040154 (REGDB_E_CLASSNOTREG)). both systems are 32bits,