Understanding the version number

The version number is four digits:

  1. Major number.

    Is increased when there are significant jumps in functionality without backward compatibility with previous versions.

  2. Minor number.

    Is incremented when only minor features or significant fixes have been added.
    While maintaining compatibility with previous versions.

  3. .NET Framework version.

    For example:
    • 35 - .NET Framework 3.5
    • 4 - .NET Framework 4.0
    • 45 - .NET Framework 4.5

  4. Revision number in local revision control system.

    Do not pay attention to revision number, it's only for author.

For example:

  • 1.0.35.315 - version 1.0 for .NET Framework 3.5; revision 315.
  • 1.0.4.315 - version 1.0 for .NET Framework 4.0; revision 315.
  • 1.1.4.320 - version 1.1 compatibility with 1.0; for .NET Framework 4.0; revision 320.
  • 2.5.45.672 - version 2.5 no compatibility with version 1.x; for .NET Framework 4.5; revision 672.