Entity Framework 6 - Knowledge Base (KB)
16 results in tag: .net-4.0
Making sure that DateTime properties return DateTimeKind.Utc
Is it possible to define DateTime properties in entity objects that are of ...Kind == DateTimeKind.Utc... by using either the .edmx file, or a t4 template?...When possible using t4, please describe how to change the property. Currently the property gets ...
asked by Sander Rijken
Entity Framework Complex Type vs Creating new Entity
I'm reading about the Entity Framework 4.0 and I was wondering why should I create a complex type and not a new Entity (Table) and a relation between them?
asked by Ronny
What is the difference between Entity Framework and LINQ to SQL by .NET 4.0?
I was checking ...2nd edition of Professional ASP.NET MVC... and realized EF replaced LINQ to SQL. I am familiar to LINQ to SQL from the first book but I know nothing about EF. Anyway while reading the code, it seems like nothing has changed except the na...
asked by Ufuk Hacıoğulları
Using uniqueidentifier SQL column type with Entity framework
For my primary key and identity in our Clients table I use ...uniqueidentifier... column with a default value set to newsequentialid(). Inserting new rows through the management tool creates the values for the ID fine. ...Inserting from .NET 4 code via EF...
asked by mare
Update Exception with Entity-Framework?
Hi,...I am using EntityFramework for my ASP.NET MVC website but have some problems with the update....This is how my update code looka like :...using (BissEntities context = new BissEntities()) { if (adCategoryFilter.Id < 1) context.Add...
asked by Banshee
Dropdownlist Datasource and adding extra item from C#
I have a ...DropDownList... that is associated with a ...DataSource... in the aspx page. I need to add one more item when the page is loaded. ...My Code:...<asp:LabelDropDownList ID="ddlVisualTemplate" runat="server" LabelText="Visual Template:" Data...
asked by Sami
How to deep copy an entity
I found this snippet ...here...: ...public static T DeepClone<T>(this T obj) { using (var ms = new MemoryStream()) { var bf = new BinaryFormatter(); bf.Serialize(ms, obj); ms.Position = 0; return...
asked by user194076
How do I convert this IQueryable<Patient> to DbSet<Patient> ?
This should be straightforward but I'm getting tripped up on the line inside the IF block. The error on that line is ..."Cannot implicitly convert type 'System.Linq.IQueryable[Patient]' to 'System.Data.Entity.DbSet[Patient]'. An explicit conversion exis...
asked by Joe
Relax or disable table constraints when using Dapper and Entity Framework?
I would like to set a do something like this ...dataSet1.EnforceConstraints = false;... using the Dapper.Net ORM and Entity Framework....I created the models in VS2010 where a property:... [EdmScalarPropertyAttribute(EntityKeyProperty=false, IsNullable...
asked by ElHaix
Entity framework Include command - Left or inner join?
As I was investigating the difference between ...Include... and ...Join... I found that : ...If the DB ...does not... include a Foreign Keys -it has no navigation props so it's better to use ...Join...If It ...does... have a navigation props - then use ....
asked by Royi Namir
Does Entity Framework 6 support .NET 4.0?
I believe Entity Framework 6 is intended for .NET 4.5. I'm wanting to use it for a Visual Studio 2010 project, so .NET 4.5 isn't available....Does it support .NET 4.0 and hence Visual Studio 2010?
asked by Sam
Does Entity Framework 6 precompile queries with .Net Framework 4.0
Question title really says it all, but I can't seem to find this tidbit of information anywhere. A comment here ( ...https://stackoverflow.com/a/13224381/215068...) is the best I've found....Will EF 6 (6.0.1) precompile views when using the .NET Framewor...
asked by EBarr
EF 6 dependency on System.Data.Entity
With EF6, my understanding is that all EF related classes have been moved into EntityFramework.dll. I see following code that is using DbContext class ...namespace ConsoleApplication1 { using System; using System.Data.Entity; using System.Data...
asked by BKS
.NET 4.0 DataAnnotations GAC/EntityFramework conflict
I'm trying to build an ASP.NET web site for Microsoft .NET 4.0 using Entity Framework 6. The website is explicitly targetting .NET 4.0 in ...web.config...:...<compilation debug="true" targetFramework="4.0">..., IIS Express' application pool in ...applicat...
asked by Aleksei Omelaienko
EF6 with SQLite in .NET 4.0 Code-Based Configuration: "Unable to Determine the DbProviderFactory"
I am trying to get EF6 Code-Based Configuration to work with SQLite in .NET 4.0. In my target application ...App.config... is auto-generated so editing that is very painful. Initially when installing EF6 to SQLite through NuGet to my test application it g...
asked by Silvyrfir
Prepare a List of fields and displaynames for each DbSet in DbContext
In my project (MVC5, EF6, .Net4.8), I need to prepare a document that contains the list of all field names and their DisplayNames. For example, I have the following Classes in my DbContext:...public class Teacher { [Key] public int Id { get; set; ...
asked by Mtsharif
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