I had imported SP functions with EF model successfully,but couldn't find c# function into context. weird! Anyone had some issue?
Function import not worked for me neither. You may write your execute method or best solution might be (if not neccessary) convert it to Entity Framework 4 and your method will be there for you.
Importing stored procedure through wizard is not enough. You must open model browser and add function import for that stored procedure.
Related
Hi I have a project which is quite old. It uses stored procedures which isn't an issue but it does have lots of error prone mapping code in old ADO.net. My main goal is to cut down the mapping more than anything. We have a separate library of I guess POCO/DTO type objects that get mapped to.
Can I map stored procedures to these classes easily. I suppose I could use AutoMapper as the mapping will be exact but I'm wondering if there's an easier way that it does out of the box. The list of complex type doesn't show the imported library's business classes. Cheers.
Instead of using AutoMapper, create a complex return type using "Edit Function Import", which has the exact properties as the stored procedure result.
I wonder if there is any free/open source tools to generate a return collection complex types object from stored procedures, like vs2010 entity framework stored procedures add function import tools.
Regards,
Andrian
You can found alots helpers can do this for you like http://radstudio.codeplex.com/releases but i dont know why you want to autogenerate all things anyway i recommend try to use petapoco ORM if you find a easy way for work with data and get a best performance.
http://www.toptensoftware.com/petapoco/ :)
I have a stored proc in my database and I am using Entity Framework 4 to work with the database from my code. Following instructions for importing a sproc, I was able to add it to my model and import a function to reference it. In the model browser under Function Imports, the stored proc and all its parameters appears. The access says "Public." Yet, I am not able to see it in Intellisense when I go to call it in my context object. When I do a global search on the name of the sproc, I see it appears in 3 places in the EDMX, and once in my calling code, but no code appears to have been generated for it in the Designer.cs file.
I must have missed a step or something, but as I look back through it, it's all pretty simple; I can't see where I went wrong. Has this happened to anyone? How can I troubleshoot?
if you switch to the model browser view on the .edmx file, you can see your imported SProcs under the model store node in the stored procedures folder. You can right-click them there and select "add function import" to generate the execution code in the entity data model's Designer.cs file. Unfortunately, you seem to have to do this import for them individually. If someone knows how to import them all simultaneously, I'd love to know.
Is that what you're looking for?
Take a look at this MSDN thread. On this forum, there is another thread addressing this issue in some way.
In short, it is an EF Designer limitation. You can try writing your own code to call this function, or use third-party designer like Entity Developer.
New to Entity framework.
I am using EF4 and I have implemented for now Database first using Stored procedures.
I have noticed that when I launch the application and regardless which stored procedure is invoked it takes 6 seconds .After that even if call another stored procedure that has never been called before the response is fast.
Is there a trick when you create entity context for the first time?
Has anybody experiencied the same?
thanks a lot
I don't know if you still need it, but you can follow a How to... following this link
How to use a T4 template for View Generation
This looks like the view generation is performed, and it takes the most of the time.
Take a look at this article, these recommendations should improve the situation.
More information about EF performance is available here.
I'm new to the Entity Framework.
I have a SQL Function that returns the age for a given birthday.
(http://www.sql-server-helper.com/functions/get-age.aspx)
And I want to use it with linq. I know it's possible. I've read it here:
http://blogs.msdn.com/efdesign/archive/2009/01/07/model-defined-functions.aspx
http://blogs.msdn.com/efdesign/archive/2008/10/08/edm-and-store-functions-exposed-in-linq.aspx
but it seems this is part of the EF extentions (which I have) or that it is still in development.
Can anyone help me with this?
Thank you.
Model defined functions are not in the shipping Entity Framework, and I don't think they are in the extensions, either. As far as I know, they are a new feature planned for .NET 4.0. I don't know if they are in the Community Technology Preview of that. You can see a demo of model defined functions if you watch the Entity Framework presentation from PDC. But they are certainly not in .NET 3.5 SP1.
As a workaround, you could define a computed column on your table which used the function and then map that column instead of mapping the function directly.
You might be able to do a "FunctionImportMapping" see msdn for more info..
You could definitley do it that way if you exposed it as a sproc, I've not tried with just a function tho..