I am using POCO entities in my application.
So i have three files:
DBModel1.edmx
DBModel1.Context.tt
DBModel1.tt
Under DBModel1.tt, I have all POCO Entities.
Now my DB is copied to a new Server, wherein 1 new table has been Added to the database.
So I have to add one more POCO entity for new table.
Since now it's a complete new DB, I would have to create a new EDMX and tt files.
Is there anyway :
to make context.tt file point to new EDMX
to add new POCO Entities in existing tt file
Any help would be appreciated. Thanks.
To point .tt file to another EDMX file you just need to open the file and change its declared inputFile filed to another path.
Related
I added a new table to the database. In the .edmx (where database diagram is at), I right-clicked and chose 'Update Model from Database...'. I can see the new table's diagram has been generated, but how do I add model to EXISTING .tt? I know I could do it manually, but I would like to know how to generate it automatically. Thanks.
EDIT: I got the model class by clicking around. I think it was right clicking on .tt then 'Debug T4 template' which generated it. But can anybody explain what did this Debug T4 template debug?
I'm facing issue while refreshing tables and views in Entity Framework 6 and the following are issues,
The removed columns in the table and I tried refreshing the EDMX, but removed columns are not properly deleted in the .edmx (EF)
Changed the column name of a table and I tried refreshing the EDMX, but column name changes are not properly updated in the .edmx
New columns are added at the bottom.. how to change the sequence?
When we delete a table, then all the class files created under .tt file are getting deleted by itself.
Please let me how to refresh the Entity Framework properly without the above issues ?
Currently, I'm deleting all the entities in the model (EDMX Diagram) and re-adding it again.
Thanks,
Prakash.
Do you want to delete any table from edmx you must to remove the table name from tt file and save it again.
I'm using Database First approach and I have table called Campus and when I add to my edmx from SQL Server and I see that it renamed to Campu why is that doing?
I'm guessing that your project is having some table pluralization problems. So when your table Campus is created, Entity Framework is literally reading it as an entity called a Campu that you have pluralized to be Campus.
See this link on how to change pluralization.
But this isn't really a problem right? You can change your model name back to Campus.
I attempted to update my edmx file by selecting a table. The tool spit out a info message that said the table did not have a primary key.
The entity did not get added to the design surface but it did get added to the .edmx file. In addition, using the model browser I see an Entities.Store and an Entities. My table got added to Entities.Store, but not to Entities.
I cannot access the table that was "added" in the code.
What do I do?
Steps to reproduce:
Create a SQL table with two columns that are both defined as foreign keys to other tables. Make sure the tables that the FKs point to already exist in the model on the design surface.
Right click and choose Update Model from Database...
Next. Under the Add tab, mark the new table under Tables
Click Finish.
An association will be created and it will be selected on the design surface, but it won't start with FK_, it will just be the name of your table. Go to the Model Browser and look under Entity Types. The table will not be there. Look under Associations and you will see your table name there as an association, but it will look out of place (because of the name).
Entity Framework was too smart for me. It created an association instead of an entity. Odd, but it works for how I need to use it.
I have a SQL server db ( with tables etc) and ive installed ef6 in order to use async stuff ( p.s. im new to ef).
So I added this :
played with the wizard and created a valid edmx files.
My db name is DUMP so it added Dumpentities suffix :'
so now i can do :
de = new DumpEntities1();
var data=de.AgeGroups.ToList()
But why don't I Have DbContext ? like I see in many places ?
Is xxxEntityes is a replacement for DbContext ?
cause it seems i can do all actions with xxEntites ...
edit
Ive searched "dbcontext" in my solution and apprently i do have it :
So what is going on here?
does using xxxEntiyies is the new way ?( and not doing xxxContext = new xxxContext()...even if I wanted - I dont have it...)
You should not use DbContext directly (that will not make sense) in Entity Framework. Instead you use your own custom context - class inherited from DbContext which holds sets specific to your application. When you use database first approach this custom entity class will be generated based on edmx file data, which in his turn will be generated based on database schema.
Regarding to naming... its not obvious but custom context which will be generated, will have same name as connection string name when you are creating edmx file:
Actually this will be default name for Entity Container of your conceptual entity model. If you will open edmx file in designer and take a look on its properties, you will see:
If you will change this name, context will be re-generated with name you have provided.