Using Workflow to Assign Value to Title Column

I cannot find the answer to this question using the search function, so hopefully someone can provide an answer to the following:

1. I am importing files to a document library using a C# console app. This works fine

2. When the file is added to the library it appears as a link in a 'Name' column which is a link to the file itself, this is fine.

3. The 'Title' column for a file remains unpopulated and this something I would like to change. I would like to automatically populate the Title column with the name of the file when a file is added to the document library. 

Does anyone know how to do this? 

Thanks,