Entity Framework Feature Suggestions

Welcome! You can use this site to tell the Entity Framework team what features you want to see in future versions.

Remember that this site is only for feature suggestions and ideas!

If you have technical questions or need help with EF try StackOverflow or visit our forums.

If you want to report a bug you found in EF use the Entity Framework project page on CodePlex.

If you want to find more information about the Entity Framework go to our MSDN site.

Entity Framework Feature Suggestions

You've used all your votes and won't be able to post a new idea, but you can still search and comment on existing ideas.

There are two ways to get more votes:

  • When an admin closes an idea you've voted on, you'll get your votes back from that idea.
  • You can remove your votes from an open idea you support.
  • To see ideas you have already voted on, select the "My feedback" filter and select "My open ideas".
(thinking…)

Enter your idea and we'll search to see if someone has already suggested it.

If a similar idea already exists, you can support and comment on it.

If it doesn't exist, you can post your idea so others can support it.

Enter your idea and we'll search to see if someone has already suggested it.

  1. Partial SaveChanges

    Should be able to SaveChanges of certain entities while leaving the other entities in Added etc. mode, this is useful when you want to save data in a page that some other parts of the page contain invalid data that can't be saved.

    20 votes
    Vote
    Sign in
    Check!
    (thinking…)
    Reset
    or sign in with
    • facebook
    • google
      Password icon
      I agree to the terms of service
      Signed in as (Sign out)
      You have left! (?) (thinking…)
      0 comments  ·  runtime  ·  Flag idea as inappropriate…  ·  Admin →
    • 19 votes
      Vote
      Sign in
      Check!
      (thinking…)
      Reset
      or sign in with
      • facebook
      • google
        Password icon
        I agree to the terms of service
        Signed in as (Sign out)
        You have left! (?) (thinking…)
        1 comment  ·  Flag idea as inappropriate…  ·  Admin →
      • 19 votes
        Vote
        Sign in
        Check!
        (thinking…)
        Reset
        or sign in with
        • facebook
        • google
          Password icon
          I agree to the terms of service
          Signed in as (Sign out)
          You have left! (?) (thinking…)
          0 comments  ·  runtime  ·  Flag idea as inappropriate…  ·  Admin →
        • Compiled Code First

          The current EDMX designer doesn't work well for enterprise scenarios - it becomes incredibly cumbersome as the number of entities grows. For example:
          * It forces the developer to arrange entities visually - once you get over about 10 entities or complex relationships between them, it becomes difficult to do.
          * It's difficult to find entities - rather than scan for them alphabetically, I need to scroll around a complex diagram I don't really want.
          * The wizards get in the way - updating my model continually prompts me to modify my connection strings, I need to manually select the…

          19 votes
          Vote
          Sign in
          Check!
          (thinking…)
          Reset
          or sign in with
          • facebook
          • google
            Password icon
            I agree to the terms of service
            Signed in as (Sign out)
            You have left! (?) (thinking…)
            1 comment  ·  tools  ·  Flag idea as inappropriate…  ·  Admin →

            Updating the title. The part about reverse engineering a database into a Code First model is included into our VS tooling in EF 6.1. I mark that as completed and split the part about having a “compiled” Code First model that loads very fast, but splitting ideas is not supported in UserVoice :)

          • Be able to configure initial value for identity column

            Currently when configuring Identity columns we can't declare the initial value. It would be nice to add an option in order to specify the initial value. This is not respected when we reverse engineer an existing database as well

            19 votes
            Vote
            Sign in
            Check!
            (thinking…)
            Reset
            or sign in with
            • facebook
            • google
              Password icon
              I agree to the terms of service
              Signed in as (Sign out)
              You have left! (?) (thinking…)
              0 comments  ·  runtime  ·  Flag idea as inappropriate…  ·  Admin →
            • 19 votes
              Vote
              Sign in
              Check!
              (thinking…)
              Reset
              or sign in with
              • facebook
              • google
                Password icon
                I agree to the terms of service
                Signed in as (Sign out)
                You have left! (?) (thinking…)
                2 comments  ·  Flag idea as inappropriate…  ·  Admin →
              • Support unsigned integer (e.g. uint) properties and keys

                If my model contains an int ID it's automatically detected as a Key field.
                I'd like to have the same support for uint ID and similar types.

                18 votes
                Vote
                Sign in
                Check!
                (thinking…)
                Reset
                or sign in with
                • facebook
                • google
                  Password icon
                  I agree to the terms of service
                  Signed in as (Sign out)
                  You have left! (?) (thinking…)
                  3 comments  ·  runtime  ·  Flag idea as inappropriate…  ·  Admin →
                • Map multiple entities to same table

                  I should be able to map multiple models to the same table. For example consider a User table. I may have a model for logging in, changing a password, resetting a password and maintaining a user. I would normally create different domain models for each of these use cases. However, I am not able to map these models to a single table.

                  Here is a link with a workaround by MSFT, but would like to avoid workaround...
                  http://social.msdn.microsoft.com/Forums/en/adodotnetentityframework/thread/0f65caae-8a66-431f-aa02-4b2c68f871e9

                  18 votes
                  Vote
                  Sign in
                  Check!
                  (thinking…)
                  Reset
                  or sign in with
                  • facebook
                  • google
                    Password icon
                    I agree to the terms of service
                    Signed in as (Sign out)
                    You have left! (?) (thinking…)
                    0 comments  ·  Flag idea as inappropriate…  ·  Admin →
                  • Add support for dynamically extended queries as per LinqKit

                    LinqKit has shown that is possible to make the creation of queries much more dynamic, with them being composed at run time dependent on external conditions. nHibernate is good at this and LinqKit helps, but it would be nice to have an official solution.

                    18 votes
                    Vote
                    Sign in
                    Check!
                    (thinking…)
                    Reset
                    or sign in with
                    • facebook
                    • google
                      Password icon
                      I agree to the terms of service
                      Signed in as (Sign out)
                      You have left! (?) (thinking…)
                      0 comments  ·  runtime  ·  Flag idea as inappropriate…  ·  Admin →
                    • Support for SQL Server Change Data Capture -- or at least tables with no primary keys

                      Change Data Capture is one of the coolest features in SQL Server 2008+. I know it's not core to tailor things for one database technology, but this feature is completely unsupportable in the current EF because EF doesn't allow tables without PKs (and the tables SQL Server gens for CDC have no PKs). Ideally, some sort of real support would be allowed that would allow for some sort of Entity.CDC or something that would string together the tables that an entity uses ... but that is probably a bridge too far.\

                      17 votes
                      Vote
                      Sign in
                      Check!
                      (thinking…)
                      Reset
                      or sign in with
                      • facebook
                      • google
                        Password icon
                        I agree to the terms of service
                        Signed in as (Sign out)
                        You have left! (?) (thinking…)
                        0 comments  ·  tools  ·  Flag idea as inappropriate…  ·  Admin →
                      • Ability to intercept and cancel changes to properties

                        (Note that the original description of this idea talked about making PropertyChangingEventArgs cancellable. Although this is an interesting request, it is not a change we could implement in EF. In fact, there is probably not way it can be implemented in .NET without defining a new standard interface for change tracking)

                        Rather than declining the idea, I am renaming it to capture the essence that is still potentially applicable to EF: provide a hook that can be used by an application or library to intercept what happens whenever EF detects that a property of a tracked object is being changed…

                        17 votes
                        Vote
                        Sign in
                        Check!
                        (thinking…)
                        Reset
                        or sign in with
                        • facebook
                        • google
                          Password icon
                          I agree to the terms of service
                          Signed in as (Sign out)
                          You have left! (?) (thinking…)
                          3 comments  ·  runtime  ·  Flag idea as inappropriate…  ·  Admin →
                        • Ability to intercept when an association is being changed

                          There should be an AssociationChanging in System.Data.Objects.DataClasses.RelatedEnd class, so I can validate before items get attached to a relation.

                          17 votes
                          Vote
                          Sign in
                          Check!
                          (thinking…)
                          Reset
                          or sign in with
                          • facebook
                          • google
                            Password icon
                            I agree to the terms of service
                            Signed in as (Sign out)
                            You have left! (?) (thinking…)
                            2 comments  ·  runtime  ·  Flag idea as inappropriate…  ·  Admin →
                          • SqlDependency / query notification

                            in ADO.NET classic thers an option to get a notification from SQL when data changes in the database, using the SqlDependency class for specific queries. i would like to see this supported in the next EF

                            17 votes
                            Vote
                            Sign in
                            Check!
                            (thinking…)
                            Reset
                            or sign in with
                            • facebook
                            • google
                              Password icon
                              I agree to the terms of service
                              Signed in as (Sign out)
                              You have left! (?) (thinking…)
                              0 comments  ·  runtime  ·  Flag idea as inappropriate…  ·  Admin →
                            • Support concurrency checks in derived types when using TPT inheritance

                              Remove the limitation to perform concurrency checks on derived types. Now you may only use properties from the base type for concurrency checks.

                              17 votes
                              Vote
                              Sign in
                              Check!
                              (thinking…)
                              Reset
                              or sign in with
                              • facebook
                              • google
                                Password icon
                                I agree to the terms of service
                                Signed in as (Sign out)
                                You have left! (?) (thinking…)
                                0 comments  ·  Flag idea as inappropriate…  ·  Admin →
                              • Add ability to include multiple edmx files in another edmx file

                                Allow to split single model to multiple edmx-files and use any subset of these files in any file of set.
                                Sometimes most of entities of large model are linked but there is theoretical possibility to split them to several subsets to parallelize work in team.
                                Single edmx file sometimes caused conflicts during merging changes produced by different developers of team. Multiple linked edmx-files could prevent conflicts.
                                Existing Using element exists only in CSDL model and is not supported by designer.

                                17 votes
                                Vote
                                Sign in
                                Check!
                                (thinking…)
                                Reset
                                or sign in with
                                • facebook
                                • google
                                  Password icon
                                  I agree to the terms of service
                                  Signed in as (Sign out)
                                  You have left! (?) (thinking…)
                                  0 comments  ·  Flag idea as inappropriate…  ·  Admin →
                                • Updateable Views

                                  I would like to see update-able views. This is available in Telerik ORM, and I have found it very helpful in situations where I initially assumed a grid would only need to display read only data, but was months later asked to allow editing.

                                  There are other ways to do this of course, but they require recoding. This would make certain maintenance tasks easy.

                                  16 votes
                                  Vote
                                  Sign in
                                  Check!
                                  (thinking…)
                                  Reset
                                  or sign in with
                                  • facebook
                                  • google
                                    Password icon
                                    I agree to the terms of service
                                    Signed in as (Sign out)
                                    You have left! (?) (thinking…)
                                    1 comment  ·  Flag idea as inappropriate…  ·  Admin →
                                  • Filtering support in databinding

                                    Add Filter and Sort support to Windows Forms BindingSource when bound to EF as in example below.

                                    Dim context As New MyEntities
                                    context.Employees.Load()
                                    EmployeeBindingSource.DataSource = context.Employees.Local.ToBindingList()

                                    'Would like the following to then work
                                    EmployeeBindingSource.Filter = "FirstName = 'SANTA'"
                                    EmployeeBindingSource.Sort = "FirstName"

                                    I use data-driven filters stored outside of the application, so new filters and sorts may be added without new code.

                                    See also
                                    https://connect.microsoft.com/data/feedback/details/704105/entity-framework-winforms-datagridview-support-for-bindingsource-filter-sort-and-column-heading-sort#details

                                    16 votes
                                    Vote
                                    Sign in
                                    Check!
                                    (thinking…)
                                    Reset
                                    or sign in with
                                    • facebook
                                    • google
                                      Password icon
                                      I agree to the terms of service
                                      Signed in as (Sign out)
                                      You have left! (?) (thinking…)
                                      1 comment  ·  runtime  ·  Flag idea as inappropriate…  ·  Admin →
                                    • Provide access to ModelBuilder for Database First

                                      Our database structure is set up in such a way that all tables contain soft-deleted columns and most contain an owner account key column.

                                      Both of these provide a level of filtering we would like to let Entity Framework take care of for us at a global level, instead of always writing "&& t.Deleted == false && t.Owner == LoggedInOwnerKey" on our linq join/where clauses.

                                      This is currently possible with Code First, when you use the DbModelBuilder during the DbContext.OnModelCreating() but that method is not available when using EDMX strategy.

                                      All we are doing with the DbModelBuilder is adding System.Data.Entity.ModelConfiguration.Conventions.IConventions…

                                      16 votes
                                      Vote
                                      Sign in
                                      Check!
                                      (thinking…)
                                      Reset
                                      or sign in with
                                      • facebook
                                      • google
                                        Password icon
                                        I agree to the terms of service
                                        Signed in as (Sign out)
                                        You have left! (?) (thinking…)
                                        0 comments  ·  Flag idea as inappropriate…  ·  Admin →
                                      • Remove sysdiagrams from Tables in Update Model From Database

                                        SysDiagrams always appears in the list of table when Upgrading Model from Database. This is just noise and therefore a nuisance.

                                        15 votes
                                        Vote
                                        Sign in
                                        Check!
                                        (thinking…)
                                        Reset
                                        or sign in with
                                        • facebook
                                        • google
                                          Password icon
                                          I agree to the terms of service
                                          Signed in as (Sign out)
                                          You have left! (?) (thinking…)
                                          0 comments  ·  tools  ·  Flag idea as inappropriate…  ·  Admin →
                                        • Updating the F# SqlEntityConnection Type Provider for EF 6

                                          The F# SqlEntityConnection Type Provider is a third way to interact with Entity framework (with the other two being an .edmx file and Code First).
                                          http://msdn.microsoft.com/en-us/library/hh362322.aspx

                                          This Type Provider doesn't support the updated low-level API changes that EF 6 requires, as far as I can tell. I'd love to have an updated version that supports the async features of EF 6.

                                          15 votes
                                          Vote
                                          Sign in
                                          Check!
                                          (thinking…)
                                          Reset
                                          or sign in with
                                          • facebook
                                          • google
                                            Password icon
                                            I agree to the terms of service
                                            Signed in as (Sign out)
                                            You have left! (?) (thinking…)
                                            1 comment  ·  runtime  ·  Flag idea as inappropriate…  ·  Admin →
                                          • Don't see your idea?

                                          Entity Framework Feature Suggestions

                                          Feedback and Knowledge Base