How can I create an ObjectContext from separate ssdl + csdl + msl files and no edmx?

Error processing SSI file


  1. Leonel

    • 2021/1/17

    Working solution:

    Generate SSDL, CSDL, MSL files and include in project as embedded resources.

    Generate EDMX by combining those files and include in project for T4s to look at.

    Modify EF's connection string in App.Config: add default namespace of assembly (+ '.') before resources' file names.

    Point T4 at EDMX and transform templates.

  2. Rey

    • 2015/10/7

    An empty C# project · 3 loose files: an SSDL, CSDL and a MSL (generated elsewhere) · No EDMX file.

  3. Kade

    • 2019/8/21

    Given: An empty C# project 3 loose files: an SSDL, CSDL and a MSL (generated elsewhere) No EDMX file What modifications/additions should I perform on project to compile these files into a T4-based

  4. Ward

    • 2020/4/17

    For more information, see SSDL Specification and MSL Specification. At build time, the EF Designer uses information in an .edmx file to 

  5. Dubois

    • 2016/10/19

    This example is based on the Microsoft SQL Server Product Samples: Database. The example shows you how to construct an ObjectContext. C#. // Create the ObjectContext. ObjectContext context = new ObjectContext ("name=AdventureWorksEntities"); // Set the DefaultContainerName for the ObjectContext. // When DefaultContainerName is set, the Entity Framework only // searches for the type in the specified container.

  6. Frasheri

    • 2020/1/2

    However before the Entity Framework another powerful ORM existed and it creates 3 files with the extensions *.csdl, *.msl, and *.ssdl.

  7. Kyle

    • 2017/3/20

    3) Create your ObjectContext/EntityConnection by passing explicit connection string that indicates your database and points to database-specific SSDL file. You can get the connection string by EntityConnectionStringBuilder or writing manually. Only the SSDL path need to be changed in connection string. (If you put the Oracle SSDL file in YourProject\Bin\Debug, the path will be, “.\YourProject.ssdl”) metadata=res://*/Model1.csdl|./StudentProject.ssdl |res://*/Model1.msl

  8. Augustus

    • 2019/6/17

    and check that the .csdl, .msl, and .ssdl resource files are there. This happens to me when I do not clean solution before build new .edmx designer.

  9. Ridge

    • 2019/12/14

    You can pass an existing ObjectContext to a DbContext constructor to create a DbContext wrapping the existing context. This can be used for existing applications that use ObjectContext but which want to take advantage of DbContext in some parts of the application.

  10. Kash

    • 2017/4/7

    These three files (csdl, msl, ssdl) can also be created or edited by hand. Mapping[edit]. Entity Data Model Wizard 

  11. Watson

    • 2017/1/21

    Thus, you can create an Entity Data Model file (.edmx) for your existing database. You can open an EDM designer in XML view where you can see all the three parts of the EDM: Conceptual schema (CSDL), Storage schema (SSDL) and mapping schema (MSL), together in XML view. Right click on School.edmx -> click 'Open with..', this will open a popup

  12. Toby

    • 2019/3/25

    edmx is split into three different files: .ssdl, .csdl and .msl. To construct any database, we need define the tables for the data storage. Here 

  13. Micah

    • 2018/12/30

    You can find more information here: Query Builder Methods. You can also construct and use Entity SQL queries directly by using the ObjectContext.CreateQuery method. Building dynamic queries by using Entity SQL is easier than by using LINQ to Entities, but this doesn't mean it can't be done with LINQ. See the following links for more information:

  14. Robinson

    • 2016/3/3

    When you build your project, the Entity Deploy action extracts three sections from the .edmx file into three separate files. The CSDL section is extracted 

  15. Lyle

    • 2019/7/1

    I followed this example Changing schema name on runtime - Entity Framework where I can create a new EntityConnection from a MetaDataWorkspace that I then use to construct a DbContext with a different schema, but I get compiler warnings saying that RegisterItemCollection method is obsolete and to "Construct MetadataWorkspace using constructor that accepts metadata loading delegates."

  16. Abazi

    • 2020/8/25

    We've created the ContextFactory to create our context from the model metadata stored, not in the .edmx file, but in a table in a database.

  17. Garcia

    • 2020/12/21

    NET Object Services, LINQ to Entities, including our model (edmx, csdl, ssdl, msl) and the code generated entities and object context.

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