EF Core 5.0 Preview 7

EF Core 5.0 preview 7 is available on NuGet now!

New features in preview 7 include:

• Register a factory for DbContext instances in D.I.
• Clear all tracked entities to reset DbContext state
• New pattern for store-generated defaults
• Better support for Cosmos partition keys
• New Cosmos configuration options
• Scaffold-DbContext now singularizes
• Support for database savepoints

Remember that all these features from previous previews are also included in preview 7:

• Split queries for Include and projection of collections
• IndexAttribute
• Improved query translation exceptions
• Application-specified transaction IDs
• IPAddress mapping
• Option to exclude OnConfiguring when scaffolding
• Translations for FirstOrDefault, etc. on strings
• Simplification of case blocks in generated SQL
• Database collations
• Flow arguments into IDesignTimeDbContextFactory
• No-tracking queries with identity resolution
• Stored (persisted) computed columns
• SQLite computed columns
• Configure database precision/scale in model
• Specify SQL Server index fill factor
• Filtered Include
• Command-line parameters for namespaces when scaffolding a DbContext or generating migrations
• Command-line support for passing a connection string to [dotnet ef database update]/[Update-Database]
• EnableDetailedErrors provides more information in query mapping exceptions
• Improved support for using Cosmos partition keys in queries
• New ModelBuilder API for navigation properties
• Support for the SQL Server DATALENGTH function
• Use a C# attribute to specify a property backing field
• Complete discriminator mapping
• Performance improvements in Microsoft.Data.Sqlite
• Simple Logging
• Simple way to get generated SQL
• Use a C# attribute to indicate that an entity has no key
• Connection or connection string can be changed on initialized DbContext
• Change-tracking proxies
• Enhanced debug views
• Improved handling of database null semantics
• Indexer properties
• Generation of check constraints for enum mappings
• IsRelational method for differential model building
• Cosmos optimistic concurrency with ETags
• Query translations for more DateTime constructs
• Query translations for more byte array constructs
• Query translation for Reverse
• Query translation for bitwise operators
• Query translation for strings on Cosmos

The .NET Blog announcement has installation instructions and full details.