Question

There are different office version, different com type libraries for managing them.

Could anyone tell me how should i write the code to operate on different Excel version?
What about PIA for office, should I include them all with the project?

How to solve the problem of office multiversioning?

Answer 1

1) take advantage of the dynamic binding

2) stick with late binding

and your code will work on any version.

// work with any version
Type wordType = Type.GetTypeFromProgId( "Word.Application" );

dynamic wordApp = Activator.CreateInstance( wordType );

// late binding + dynamics - always works
wordApp.Visible = true;