I have a stored procedure that gets many input parameters (the procedure persoms Insert statement)
I use EF to access this procedure.
Is there a way to automatically generate object type that contains all the input parameters of the procedure?
Something like the complex type that is being generated for the output of the procedure.
My EF version is 6.1.3
No, I don't think it's possible to automatically generate a class for the input parameters of a stored procedure in EF 6.1.3.
This article helped me in working with insert stored procedure with the entity framework:
http://www.entityframeworktutorial.net/EntityFramework5/CRUD-using-stored-procedures.aspx
Related
I have tables with 2 level hierarchy, Parent->Child->GrandChild
I have create stored procedure with three table valued input parameter ParentTable, ChildTable, GrandChild Table.
Now, I want to consume it in .net using entity framework.
Solution all over internet is, create DataTable in .net , store data in it and pass the same as parameter in stored procedure.
But, I want to use entities instead of data table as data is stored in entity objects. Please suggest. Many Thanks.
You need to have look at this question
Create data table from entities and then pass it to the stored procedure. I haven't tried the code, just showing you the path to go. I hope it may help, looking for better solution.
I have created a stored procedure which returns columns dynamically , but i'm unable to import it into entity framework
Does anybody know how to import a stored procedure that returns columns dynamically
EF doesn't support stored procedure with dynamic result set. The result set must be fixed for EF to map it to complex type / entity type.
Does the current version of EF support user defined table types for Insert, Update and Delete methods on Entities?
I would like to use this feature so I don't have to pass in every column name to my sproc. I am not sure if EF can support one Sproc that would do all the updates for an entity though.
Table valued parameters are not supported but you can vote for them in UserVoice.
I tried this out. When I tried to import the sproc into my model I get this error message:
The function 'MySproc' has a parameter 'MyTableValuedParameter' at parameter index 0 that has a data type 'table type' which is not supported. The function was excluded.
So it would seem that the answer is no. They are not supported in Entity Framework.
We are using ado.net entity framework 4.0 for our database layer and I am a newbie to ado.net entity framework. I have created entity via adding a entity in entity framework. I want to map that entity with stored procedure only not table of the database. Stored procedure will return same column as entity. How it is possible and how i can do that without mapping to table?
Here is a complete walkthrough http://msdn.microsoft.com/en-us/library/cc716679.aspx
Its not possible because an ObjectSet is an IQueryable and mapping an ObjectSet to stored procedure would not give u an IQueryable because stored procedures by their very nature cannot be composed. The best you can do is take the content inside the stored procedure and put into a view and map the view to an ObjectSet which is possible.
You need to create a complex type, not an entity. Open up the model browser and import your stored procedure as a "function import" (your SP must not use #tempTables but you can use #tableVariables instead); in the function import wizard you'll see a "create complex type" button.
The SP becomes a method in the model context and you can use it to get IEnumerable[TheComplexType].
In EF4.1 code-first it's even simpler, you put a [ComplexType] attribute on top of any class and you can use that type as a return type for context.ExecuteStoreQuery[T]. If your properties are named exactly as the returned columns are (and the types line up), the mapping is "magic" - it just works.
I have stored Procedure getSalesOrder() returning a row structure like this:
Order (map with EF), customfield1 , customfield2 ,customfield3.
How can i use EntityFramework to get the order, and custom Fields Values ?
With the currently shipping Entity Framework, you can't. Stored procedures returning scalar values is, I believe, a feature scheduled for the .NET framework 4.0.