Boolean-backed enum type support removed
Support for formatting, parsing, and conversions of Boolean-backed enumeration types has been removed.
Previous behavior
Previously, formatting, parsing, or converting a Boolean-backed enumeration type was somewhat functional.
New behavior
Starting in .NET 8, an InvalidOperationException is thrown if you try to format, parse, or convert a Boolean-backed enumeration type.
Version introduced
.NET 8 Preview 1
Type of breaking change
This change is a behavioral change.
Reason for change
This change was made to make the .NET runtime simpler, faster, and smaller. Formatting and parsing Boolean-backed enumeration types is never used in practice and complicates the implementation. Also, Boolean-backed enum types aren't expressible in C#.
Recommended action
If you're using a Boolean-backed enumeration type, use a regular Boolean type or a byte-backed enumeration type instead.
