I am using office 2007 interop DLL to create an Excel sheet in c#.NET.
when I tried to test my app on a machine with office 2003 installed I get an exception because of the version number of the DLL . How can I determine in runtime what version of office is installed and then load the appropriate interop DLL for that version ?
If you do not need features which became available in Office 2007, just use an interop dll for old versions of Office also when current Office is installed! A PIA created with Office XP still works with Office 2010.
Otherwise, you have to find out the registry keys of Excel...
Sorry, my English sucks, I hope I can express clearly.i want to add a bar to the windows explorer,after a long time searching,i'v made a bar using BandObjectsLib(a C# library) and added it in to the Explorer window.but i have to open it through "Menu-View-Explorer bar",and the bar also came out in IE :<.my question is how to make it opened automaticly when Windows Explorer is opend.Or any other way to do this,i want to add a big horizontal bar actually a region in the bottom (or somewhere else) of Windows Explorer,so i can put my code and usercontrols into it.i use C#,vs2012,windows 7.thank you!
I've just been handed the task of replacing an existing COM component.
It has to stay as a COM component as we have no ability to change the caller.
It has to able to call a COM component, that again we can't alter. i.e. where changing the middle part of an existing process and have to do so transparently.
I've been doing some background research, and it looks like I can create a .NET COM component easy enough. I've got a few q's though.
When you create the COM interface and class they have GUID's, do these GUID's have to match the existing COM component? Or is it when the caller makes the COM call the OS determines the component based on name?
Another requirement is that the final COM call is 'dynamic' in that the method name we have to call might change, assuming the method will act on the same data is this doable?
Regarding the last bit, I have to call another third-party COM component. But as the third-party app might be replaced, if possible I'd like to be able to configure the name of the component and method called? (assuming the new and old method are similar in parameters etc)