Entity Framework Feature Suggestions

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  1. Ignore Duplicate Inserts

    On the context simply allow a setting to ignore duplicate insertions. It should just add a not exist sub select query to ensure that a duplicate is not inserted on say a primary key or unique key...

    This just removes a lot of admin on the insert side of things. If the data is already there why complain about about it unless you need to handle it.

    This will be exceptionally useful on a many to many insert. If this is in place then I dont need to first check both sides of the insert to ensure that the data…

    3 votes
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      1 comment  ·  Flag idea as inappropriate…  ·  Admin →
    • Option on Import from DataBase to choose how to resolve the conflicts on object names on differents schemas

      Add an option when using "update from DataBase" to choose how to resolve conflict name when two or more object have the same names but in diffrents schemas.
      Auto resolve -> add a number at the end of object name.
      Suffix or Prefix -> add the schema name to the objects names.

      1 vote
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        0 comments  ·  runtime  ·  Flag idea as inappropriate…  ·  Admin →
      • Add option to update model from database project

        It would be great to update the EDMX from a database project. Currently we are working with an database project containing the tables, indexes, stored procedures, types etc... If we are able to update the EDMX directly from the database project, it would remove an extra step to connect with a database. In this way, we don't even need a hosted SQL server to update the EDMX.

        3 votes
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          0 comments  ·  tools  ·  Flag idea as inappropriate…  ·  Admin →
        • Migrations: Reset migrations function

          Currently, people are hacking a way around the issue of needing to Reset migrations: http://stackoverflow.com/questions/11679385/reset-entity-framework-migrations

          The current solution means deleting the migration folder and then deleting the migration history table in the DB, and then adding a brand new migration - but then having to comment out the code in the UP()... which works but isn't optimal for example to check db consistency or when having new developers onboard the team and just being able to run Update-Database on their machine.

          3 votes
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            0 comments  ·  tools  ·  Flag idea as inappropriate…  ·  Admin →
          • Option in the Ado.net Entity Data Model template to output only the entities in a separate project and let .edmx reference new project

            It would simplify N-Tier solutions with Entity Framework tremendously if the Data Access Layer (DAL) which gets the Entity Framework generated models could get the entities (i.e. Employee model), output to a separate project and let the DAL layer still function with the EF diagrams and other things by referencing the separately output project containing the entities. By doing this you will greatly simplify the UI layer needing to reference the entities when asking a Business Logic Layer to perform a service which may require an entity model. The way things are now, if you have a Business Logic Layer…

            1 vote
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              1 comment  ·  Flag idea as inappropriate…  ·  Admin →
            • Specify which entity has the missing column

              It would speed development if the entity that has the missing column is provided to the user. Thanks

              0 votes
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                0 comments  ·  runtime  ·  Flag idea as inappropriate…  ·  Admin →
              • Add support for Default Check Constraint

                Kindly provide the support for Default Check Constraint, so that we are not forced to supply values to NOT NULL columns that are having a DEFAULT constraint and are being handled in table design.
                Currently, work around is to supply some value even is the actual property is NULL

                1 vote
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                  0 comments  ·  runtime  ·  Flag idea as inappropriate…  ·  Admin →
                • createstoredprocedure Xml ParameterBuilder

                  CREATE PROCEDURE [dbo].[sp_DownloadItemXml]
                  @ItemId [int],
                  @ReturnXML XML = NULL OUT
                  AS
                  BEGIN ....

                  Add System.Data.SqlDbType 'Xml' equivalent to System.Data.Entity.Core.Metadata.Edm.PrimitiveTypeKind to allow an XML parameter to be generated when calling CreateStoredProcedure.

                  3 votes
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                    0 comments  ·  runtime  ·  Flag idea as inappropriate…  ·  Admin →
                  • Add a UI for migrations to Visual Studio

                    Many people have problems in using command line interfaces, as they are used to the visual studio click and go experience. It would be great if you could right click on a file that contains a dbcontext and then add-migration or update-database.

                    3 votes
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                      0 comments  ·  tools  ·  Flag idea as inappropriate…  ·  Admin →
                    • Allow different key names for parent entity

                      It would be useful to be able to create relationships between entities where the parent entity does not use the primary key as it's end of the relationship. For example:

                      public class Signer
                      {
                      [Key, Column(Order = 0)]
                      public Guid EntityUUID { get; set; }

                      [Key, Column(Order = 1)]
                      public Guid SignerUUID { get; set; }

                      [ForeignKey("EntityUUID")]
                      public virtual User User { get; set; }
                      }

                      public class User
                      {
                      [Key]
                      public int Id { get; set; }

                      //Allow this column to be set as the key for signers instead of always using Id
                      public Guid? EntityUUID { get; set;…

                      3 votes
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                        0 comments  ·  Flag idea as inappropriate…  ·  Admin →
                      • Ship symbols (pdb) for EntityFramework 6.X

                        How painful that I can't step into the EF souce code to debug an issue I'm seeing.

                        46 votes
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                          2 comments  ·  Flag idea as inappropriate…  ·  Admin →
                        • mapping to in-memory OLTP Tables

                          please add ability to create in-memory OLTP tables in next EF version

                          158 votes
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                            0 comments  ·  runtime  ·  Flag idea as inappropriate…  ·  Admin →
                          • SqlAzureExecutionStrategy should handle all transient Azure SQL errors

                            I believe that current version of SqlAzureExecutionStrategy was developed in time of different architecture of SQL Azure (proxies handling connections). Now it does not cover some clearly transient errors, for example very common "System.Data.SqlClient.SqlException: A transport-level error has occurred when receiving results from the server. (provider: Session Provider, error: 19 - Physical connection is not usable)". See http://stackoverflow.com/questions/25998625/why-does-sqlazureexecutionstrategy-not-handle-error-19-physical-connection-i/30894154#30894154

                            3 votes
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                              1 comment  ·  runtime  ·  Flag idea as inappropriate…  ·  Admin →
                            • sp_fkeys

                              Using code first, when you try to apply "update-database" and you receive the message: "Could not drop object 'dbo.Table1' because it is referenced by a FOREIGN KEY constraint."

                              The message should show the result of the command "sp_fkeys", then easily the developer can identify the keys to remove.

                              1 vote
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                                0 comments  ·  tools  ·  Flag idea as inappropriate…  ·  Admin →
                              • Azure Storage

                                I know it was said that Azure Table Storage support will come after the SQL Server support for ASP .Net 5 is done.

                                I'm just saying, I still want this as soon as possible.

                                1 vote
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                                  0 comments  ·  runtime  ·  Flag idea as inappropriate…  ·  Admin →
                                • Designer support for specifying Interfaces for Entities

                                  I have an interface that a lot of my entities support.

                                  interface Audit
                                  {
                                  DateTime CreatedAt,
                                  int CreatedBy,
                                  DateTime ModifiedAt
                                  int ModifiedBy
                                  }

                                  It would be nice to be able to mark Entities as supporting this interface in the designer.

                                  See also http://stackoverflow.com/questions/4093897/interface-inheritance-in-entity-framework

                                  4 votes
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                                    0 comments  ·  tools  ·  Flag idea as inappropriate…  ·  Admin →
                                  • Support json linq queries

                                    As MS is adding json support to Sql Server 2016 it would be great if EF could support this with linq queries and convert a tree with arrays to nested lists.

                                    9 votes
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                                      0 comments  ·  Flag idea as inappropriate…  ·  Admin →
                                    • Support another Entity as a Key

                                      Since all entities require a key, declaring an entity 'A' as a key in another entity 'B', EF could lookup the key for that entity (A), and use it as the key for this entity (B) too. This keeps the model classes in .NET "clean" in the sense they don't need to duplicate they key field. E.g.

                                      class A {
                                      string Key { get; set; }
                                      }

                                      class B {
                                      A Key { get; set; }
                                      //Not required, since A has a key defined on it already, and our key is of type A
                                      //string KeyWhenPersistedToARelationalDatabase { get; set; } …

                                      1 vote
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                                        1 comment  ·  Flag idea as inappropriate…  ·  Admin →
                                      • The "dnx . ef migration add initial" command of ASP.NET 5/EF 7 should generate columns in the right order

                                        The "dnx . ef migration add initial" command of ASP.NET 5/EF 7 should generate columns in same order as the properties appear in the entities.
                                        Currently they are in alphabetical order.

                                        5 votes
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                                          0 comments  ·  tools  ·  Flag idea as inappropriate…  ·  Admin →
                                        • Customize ModelObjectItemWizard to be able to add new items

                                          I want to be able to customize Microsoft.Data.Entity.Design.VisualStudio.ModelWizard.ModelObjectItemWizard
                                          So I can add my custom items to Microsoft.Data.Entity.Design.VisualStudio.ModelWizard.Gui.ModelBuilderWizardForm like I show on this updated screenshot
                                          http://clip2net.com/clip/m407107/8fb72-entity-framework-wizard-customization2-35kb.png?nocache=1

                                          In particular I want to add "ASP.NET Identity 2.0 EF Designer model" which will already contain all the entities required for ASP.NET Identity 2.0 to work.

                                          18 votes
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                                            0 comments  ·  tools  ·  Flag idea as inappropriate…  ·  Admin →
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