Entity Framework 6 - Knowledge Base (KB)
25 results for: in tag: entity-framework-6.1
How are people unit testing with Entity Framework 6, should you bother?
I am just starting out with Unit testings and TDD in general. I have dabbled before but now I am determined to add it to my workflow and write better software....I asked a question yesterday that kind of included this, but it seems to be a question on its...
asked by Modika
Generating a SQL view from EF 6.1 code first
I just changed my application from Database first to code first! What a great improvement in deploying!. But now i have the following problem. I generated my Code-first model from my database, but after recreating the database from the generated code, my ...
asked by Spons
How can you add a navigation property on a view in EF 6.1 CodeFirst
Let's make a case to explain my problem. ...MyTable1...+id...+myTable2Id...MyTable2...+id...MyView1...+id...+myTable2Id...MyView1 exists in the case, from data from the MyTable1. Now i want to create a Navigation property from my EF6.1 Code first approach...
asked by Spons
Entity Framework -- caching an object in memory across multiple contexts
I am using Entity Framework 6 with a tenant-segregated application. I determine the tenant by looking at the request host name, then use it throughout the application, set it in tenant-owned records, et cetera....Every context gets disposed at the end of...
asked by Casey
Entity Framework 6.1 Updating a Subset of a Record
I have a view model that encapsulates only ...some... of the database model properties. These properties contained by the view model are the only properties I want to update. I want the other properties to preserve their value. ...During my research I fo...
asked by Caster Troy
Upgraded EF5 to EF 6 and now get "Cannot find the object because it does not exist or you do not have permissions."
I've got a main web application project using a referenced class library that uses EF code first. In the main web application I've also got several .edmx files. This is a production app with real data using automatic migrations (MigrateDatabaseToLatestVer...
asked by SventoryMang
When executing a command, parameters must be exclusively database parameters or values
I am not able to retrieve the ouput value back. I get the following exception:...Execption Type: InvalidOperationException:...When executing a command, parameters must be exclusively database parameters or values....C# Code Method...public Student Insert...
asked by Ernie R.
Foreach loop through table seems to load every row and run out of memory
I am trying to dump a database table using the Entity Framework in C# using EF Version 6.1.1. I was expecting the foreach loop to load each row one at a time but it gradually loads every row and then runs out of memory....foreach (Quote L in context.Quote...
asked by Mythlandia
Entity Framework 6: is there a way to iterate through a table without holding each row in memory
I would like to be able to iterate through every row in an entity table without holding every row in memory. This is a read only operation and every row can be discarded after being processed. ...If there is a way to discard the row after processing that ...
asked by Mythlandia
Entity Framework Code-First - Define the Non-clustered key for this EntityType
I Have defined an entity class with a key, but I don,t want that key be cluster because I have another cluster index in my entity, but I received an error when I add an Index attribute to my model,...Can anybody tell me that how can I define a ...Non-Clus...
asked by Mahdi Khalili
Entity Framework 6 where did key and column attributes go
I'm upgrading from Entity Framework 4.1.0.0 to Entity Framework 6 and I'm having a really hard time tracking where all of the old classes went and what namespace things are in these days....I've got a class that looks like this and was using these attribu...
asked by Josh R
Removing code first migration and degrade to older state
I have multiple DBContext so I created multiple Code first Migration folders. I just created another DBContext and related table in the code. I also added migration folder and applied in database as InitialSetup. Now I realize that I don't need new cha...
asked by Nps
Unable to update Foreign Key in Entity Framework 6
I am trying to do a simple update to the foreign key but the script never get sent over....Here is the code I am using:...using (var db = new MyContext()) { db.Entry<Contact>(newContact).State = EntityState.Modified; newContact.ContactOwner = ...
asked by foo0110
The specified type member 'UsersCount' is not supported in LINQ to Entities
I have such POCO entity... public class Product : Entity { [DatabaseGenerated(DatabaseGeneratedOption.None)] public int Id { get; set; } [Required] [MaxLength(50)] public string Name { get; set; } ...
asked by Tomas
EntityFramework Stored Proc Function Import is it possible to read async?
I'm using EF 6.1.1 and Database First. When I import a stored proc into the edmx and generate the DBContext it looks like this:...return ((IObjectContextAdapter)this).ObjectContext.ExecuteFunction<TestSP_Result>("TestSP", params[]...) ...That returns an O...
asked by oscarmorasu
SetExecutionStrategy to SqlAzureExecutionStrategy with DbMigrationsConfiguration?
I saw a post today about implementing SqlAzureExecutionStrategy:...http://romiller.com/tag/sqlazureexecutionstrategy/...However, all examples I can find of this use a Configuration that inherits from DbConfiguration. My project is using EF6 Code First Mi...
asked by James in Indy
Entity Framework Include related table when table is empty
I'm reading data from database to gridview's datasource. My Table2 can be empty. When I try to bind columns from Table2 gives me error that doesn't contain that column. I checked the data that was coming from query. There is Table2 but not columns. Just C...
asked by TurKorsaN
How to totally lock a row in Entity Framework
I am working with a situation where we are dealing with money transactions....For example, I have a table of users wallets, with their balance in that row....UserId; Wallet Id; Balance ...Now in our website and web services, every time a certain transacti...
asked by Zapnologica
Migration to MySQL and Schema specified is not valid
I have migrated SQL2012 Database to MySQL, apart from one issue....I get the following error when I connect to the MySQL Database....An exception occurred while initializing the database. ...InnerException for details: Schema specified is not valid. Erro...
asked by RentUrApp
Adding Inner Join to DbScanExpression in Entity Framework Interceptor
I'm trying to use an Entity Framework CommandTree interceptor to add a filter to every query via a DbContext....For the sake of simplicity, I have two tables, one called "User" with two columns ("UserId" and "EmailAddress") and another called "TenantUser"...
asked by Mark Johnson
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