A solution is a grouping of one or more projects that work together to create an application. The project and status information that pertain to the solution are stored in two solution files, a text-based solution (.sln) file and a binary solution user option (.suo) file. These files are similar to the group (.vbg) files that were used in earlier versions of Visual Basic, and the workspace (.dsw) files and user options (.opt) files that were used in earlier versions of Visual C++.
In This Section
- Solutions Overview
 Discusses the types of solution files included in a solution, and the process that occurs when a solution is opened.
Related Sections
- Project Types 
 Provides information about projects, the basic building blocks of solutions.
- Automation Model 
 Discusses a secondary way to extend Visual Studio.
- Projects and Solutions 
 Describes how to use Visual Studio projects and solutions to organize code files and resource files, and how to implement source control.