dotnet/Documentation/compatibility/ef-version-must-match-netfx-version.md

EF version must match NetFX version

Scope

Major

Version Introduced

4.5

Source Analyzer Status

Planned

Change Description

The entity framework version should be matched with the .NET framework version. Entity Framework 5 is recommended for .NET 4.5. There are some known issues with EF 4.x in a .NET 4.5 project around System.ComponentModel.DataAnnotations. In .NET 4.5, these were moved to a different assembly, so there are issues determining which annotations to use.

• Quirked
• Build-time break

Recommended Action

Upgrade to EF 5 for .NET 4.5

Affected APIs

• Not detectable via API analysis

Category

Entity Framework

More information