How to use T4 to generate two files at the same time from one template?

Question

I am having a case in which I need to generate two CSharp code files with pretty the same code but different namespace of the input and output types of the methods. In fact each file is for a specific country and the types come from country specific WSDL's.

I am writing some wrappers around the services and the logic is exactly the same but the types automatically generated from WSDL's are different. How could I reduce the coding effort and write the logic at one place and get it generated for two different sets of types?

Answer 1

or you could use the T4 Toolbox (Old CodePlex project, New GitHub project) and use the helpers to generate multiple files.

The author, Oleg Sych, has a documentary blog post (Archived version)

Or if you don't want this dependency just for this functionality, you can use the T4 file MultiOutput.tt (Archived version)