I have a vs2012 solution that has a number of C# projects. I would like to generate some documentation using Sandcastle for the entire library.
I have been reviewing Sandcastle documentation and not clear how I could generate the documentation for entire project.
How could I achieve this for the entire solution?
As ChrisW indicated, you should use Sandcastle Help File Builder (SHFB). However, even with the clean and simple GUI provided by SHFB, however, there are quite a number of issues that you may need or want to consider in order to produce a tidy, professional documentation set. My article ("Taming Sandcastle: A .NET Programmer's Guide to Documenting Your Code") documenting my experience with a variety of potential pitfalls, published on Simple-Talk.com, may save you some time, effort, and agony :-).
Once you have digested the article, and perhaps of more interest, I put a complete syntax and usage guide to SHFB and Sandcastle on this one-page wallchart, available on Simple-Talk.com. Here's a glimpse: