Installing Multiple Versions of the .NET Framework
You can install and run multiple versions of the .NET Framework on a computer. Currently there are three versions of the .NET Framework: version 1.0, version 1.1, and version 2.0 The three .NET Framework versions can be installed in any order.
You can also redistribute the .NET Framework with your application. For more information on including the .NET Framework with your application, see Redistributing the .NET Framework.
See Also
Tasks
How to: Use an Application Configuration File to Target a .NET Framework Version
Concepts
Configuring Assembly Binding Redirection
Assembly Binding Redirection