How Can I Implement an Auto-Incrementing Version Number in Visual Studio?

Implement automatic increment of version number in Visual Studio

In software development, maintaining incremental version numbers is critical to tracking and identifying build progress. This article provides a complete solution for automatically incrementing version numbers in Visual Studio.

AssemblyInfo class and AssemblyVersion property

To implement automatic increment of the version number, add the AssemblyInfo class to the project and modify the AssemblyVersion property. Add an asterisk (*) to the end of the property to instruct Visual Studio to automatically increment the last number. For example:

<code>[assembly: AssemblyVersion("2.10.*")]</code>

Version increment rules

Visual Studio will increment the version number according to the following rules:

• The third number represents the number of days since January 1, 2000.
• The fourth number represents half the number of seconds since midnight.

Code-based version reference

To retrieve and display the version number in code, use reflection. Here is an example:

<code>Version version = System.Reflection.Assembly.GetExecutingAssembly().GetName().Version;
DateTime buildDate = new DateTime(2000, 1, 1)
                        .AddDays(version.Build).AddSeconds(version.Revision * 2);
string displayableVersion = $"{version} ({buildDate})";</code>

Important Notes

• Setting only the fourth number to may result in incorrect version increments due to build time. Use X.Y. instead of X.Y.Z.* to reliably increment the version number.
• Newer versions of Visual Studio may throw errors about wildcards in version strings. Please disable determinism for affected compilations.
• If both AssemblyVersion and AssemblyFileVersion are specified, you may not see the auto-incremented version on the .exe.

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