First – you never have to call Marshal.ReleaseComObject(…) or Marshal.FinalReleaseComObject(…) when doing Excel interop. It is a confusing anti-pattern, but any information about this, including from Microsoft, that indicates you have to manually release COM references from .NET is incorrect. The fact is that the .NET runtime and garbage collector correctly keep track of and … Read more
Use _bstr_t: _bstr_t bstrt(buffer); Here is the holy grail of string conversion articles
regsvr32 will load the library and try to call the DllRegisterServer() from that library. It doesn’t care what DllRegisterServer() actually does – it just calls that function and checks the returned value. You use it to register COM servers in unmanaged DLLs. It can’t generate a .tlb file. regasm will register a COM-exposed .NET assembly … Read more
I’ve just release a pre-alpha version of CefSharp my .Net bindings for the Chromium Embedded Framework. Check it out and give me your thoughts: https://github.com/chillitom/CefSharp (binary libs and example available in the downloads page) update: Released a new version, includes the ability to bind C# objects into the DOM and more. update 2: no-longer alpha, … Read more
The “Operator Information Area” class seems to provide a solution for this problem. My general case seems to be working correctly with this implementation: Friend Sub PutTextWithEnter(ByVal field As FieldDefinition, ByVal value As String) If IsNothing(field) Then Throw New ArgumentNullException(“field”) If IsNothing(value) Then Throw New ArgumentNullException(“value”) _Presentation.SendKeys(Mid(value.Trim, 1, field.Length).PadRight(field.Length) & “[enter]”, field.Row, field.Column) WaitForEmulator(_Session.Handle) End … Read more
System.Windows.Automation is EXTREMELY slow. System.Windows.Automation is full of bugs. It may not return all children of an AutomationElement, which is a very severe bug. Apart from that the implementation is not thread safe. System.Windows.Automation is deprecated. Do not use it! In the MSDN you find the following note: UI Automation was first available in Windows … Read more
I’ve found the following excerpt from Adam Nathan’s “.NET and COM: The Complete Interoperability Guide”: If the COM object lives in an STA, any calls from MTA threads are marshaled appropriately so the COM object remains in its world of thread affinity. But, in the other direction, no such thread or context switch occurs. Thus, … Read more
are you running another instance elevated? are you running the exe elevated? When you are a process running as a standard user, you can only see processes/etc that belong to you. So you wouldn’t see processes that are running as administrator. When running with escalated priviliges, you can see all processes belonging to all users. … Read more
As long as the variable is not typed as object Dim xmlDocument as MSXML2.DOMDocument Set xmlDocument = CreateObject(“MSXML2.DOMDocument”) is the same as Dim xmlDocument as MSXML2.DOMDocument Set xmlDocument = New MSXML2.DOMDocument both use early binding. Whereas Dim xmlDocument as Object Set xmlDocument = CreateObject(“MSXML2.DOMDocument”) uses late binding. See MSDN here. When you’re creating externally provided … Read more
My biggest gripe would be the name, T; Add might be more illusrative of the usage. I’d also add where T : class to the generic method, but the “fluent API” seems usable. I’d also be inclined to flatten the code a bit. I can also see some ways of using the Expression API to … Read more