Entity Framework 6 - Knowledge Base (KB)
16 results in tag: dbset
DbSet.Find method ridiculously slow compared to .SingleOrDefault on ID
I have the following code (Database is SQL Server Compact 4.0):...Dim competitor=context.Competitors.Find(id) ...When I profile this the Find method takes 300+ms to retrieve the competitor from a table of just 60 records....When I change the code to:...Di...
asked by Dabblernl
Does converting from DbSet to IEnumerable cause the query to execute?
I have the following 2 methods in my Logs repository. ...public IEnumerable<Log> GetAll() { var db = new CasLogEntities(); return db.Logs; } public DbSet<Log> GetAllSet() { var db = new CasLogEntities(); return db.Logs; } ...
asked by David Kethel
Entity Framework dbset most efficient way of deleting
I have the following and looking for a more efficient way of deleting vs looping through the records and then deleting each one at a time (note using Dbset):... var wcd = dbContext.ProgramDetails.Where(p => p.Id == Id); foreach (var wc in wcd.T...
asked by Nate Pet
Get all rows using entity framework dbset
I want to select all rows from a table using the following type of syntax:...public IQueryable<Company> GetCompanies() { return DbContext.Set<Company>() .// Select all } ...Forgive me as I am completely new to EF.
asked by Wesley Skeen
Is DbSet<>.Local something to use with special care?
For a few days now, I have been struggling with retrieving my entities from a repository (...DbContext...). ...I am trying to save all the entities in an atomic action. Thus, different entities together represent something of value to me. If all the entit...
asked by bas
DbSet.Cast<TEntity>() Error: Cannot create a DbSet<IEntity> from a non-generic DbSet for objects of type 'Entity'
Version Info:...I am using C# 4.5, Entity Framework 6.0, and MEF....Code and Unit Test...I created a Test Project to explain the problem: ...https://skydrive.live.com/redir?resid=E3C97EC293A34048!2234...Please Open the UnitTest project and try to run Test...
asked by Aidin
NSubstitute DbSet / IQueryable<T>
So EntityFramework 6 is a lot better testable then previous versions. And there are ...some nice examples... on the internet for frameworks like Moq, but the case is, I prefer using NSubstitute. I've got the "non-query" examples translated to work with th...
asked by s.meijer
Find a specified generic DbSet in a DbContext dynamically when I have an entity
I have following classes and ...DbContext...:...public class Order:BaseEntity { public Number {get; set;} } Product:BaseEntity; { public Name {get; set;} } public class Context : DbContext { .... public DbSet<Order> Orders { set; get; } ...
asked by Masoud
FakeItEasy DbSet / IQueryable<T> - Entity Framework 6
I was wondering if anyone had a similar example to this ...post... for FakeItEasy (original post is ...here.... I have been trying to find the correct setup, but could not get it right. I could not find any examples online. I am beginning to teach myself ...
asked by jmzagorski
How does Entity framework implement deleting parent and a child record on the ame SaveChanges()
I have the following two entity sets representing Dept & Emp:-...public partial class Dept { public Dept() { this.Emps = new HashSet<Emp>(); } public int DeptID { get; set; } public string Name { get; set; } public string ...
asked by john Gu
Dbset<TEntity>.Add(entity) assigns an ID and this results in a exception
For the following classes :...public Car { public int ID { get; set; } public string Brand {get; set; } } ...Normally when we do : ...Car c = new Car { Brand = "Jaguar" } ; // Point A context.Cars.Add(c); // Point B context.SaveChanges() // Point...
asked by tobiak777
Entity Framework - Database First - Invalid column name error
I have three simple classes and I am wiring up EF6 to an existing database....Classes are as follows...namespace Infrastructure.Models { [Table("Applications")] public class Application { [Key] [DatabaseGenerated(DatabaseGener...
asked by Solo812
Mocking DbSet<T> inline
I am using ....NET4.5..., ...EF6..., and ...Moq... for unit testing. I am trying to mock up some Db data for test. I have an example how to do this with declaring ...mockset as variable and then using mocks....public static class TestExtensionMethods { ...
asked by Matas Vaitkevicius
Filtering non-generic DbSet with dynamically built Expression
Plot:...I have a class implemented as a facade around Entity Framework DB context. It developed to maintain backward compatibility, it mimics class with same public interface, but uses DTOs instead of EF entities....Problem:...I have next method inside cl...
asked by Andrey Weber
Member 'CurrentValues' cannot be called for the entity of type 'MyTable' because the entity does not exist in the context
I have a MVC application that used Entity Framework v6.0. Whenever a change is made to the ...DbContext..., I override the ...SaveChanges()... method and record the modifications in an audit log. Below is code for part of the audit log recording process:....
asked by Tot Zam
EntityFramework 6 out of memory exception
Hej,...I have a table in database that holds compressed large size file....when I try to read that file via a ...Ef6.... It throws an out of memory exception....Any help would be appreciated....My code is like ...var payload = repositoryContext.Set<Docume...
asked by user3661407
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