Entity Framework 6 - Knowledge Base (KB)
963 results in tag: asp.net-mvc
How can I use the Entity Framework to establish foreign key relationships?
I want to create a new row in my database on a table that has a couple of foreign key relationships and I haven't been able to get a handle on what order and what calls need to be made. This is what I have so far:...db.Models.Order order = DB.Models.Order...
asked by Jared
How can I remove an object from an Entity Framework model without having to load it first?
I am quite sure I've seen the answer to this question somewhere, but as I couldn't find it with a couple of searches on SO or google, I ask it again anyway......In Entity Framework, the only way to delete a data object seems to be ...MyEntityModel ent = n...
asked by Tomas Aschan
SQLite + Entity Framework deployment
I have a ASP.NET MVC app that is using SQLite database through Entity Framework. Everything works on VS 2008's local development webserver....However, deploying the web app to my service provider causes this error:...[ArgumentException: Unable to find the...
asked by Pompair
Is it possible to utilize a Model from another project in an ASP.NET MVC View?
I've got an ADO.NET Entity Framework class called Node in a WPF project. I want to use it in a different ASP.NET MVC project within the same solution....My Node controller:...Public Class NodeController Inherits System.Web.Mvc.Controller Functio...
asked by Zack Peterson
Entity Framework and the repository pattern (mvc storefront)
Can anyone give a helping hand? I've been watching the videos for the MVC storefront and have created my own website using these techniques i.e. DDD, Repository pattern but I wish to use Entity Framework....In the Interfaces it returns IQueryable but with...
asked by Mark Smith
Entity framework field length limit
I need to put a max length on my test field on my Views using ASP.NET MVC with the Entity Framework and I can't find how to get the max length of a varchar field....Is there an easy way to get that, or any other property of a database field
asked by moi_meme
ApplyPropertyChanges and EntityKey ()
I need to set an EntityObject's EntityKey. I know its type and its id value. I don't want to query the database unnecessarily....This works......// // POST: /Department/Edit/5 [AcceptVerbs(HttpVerbs.Post)] public ActionResult Edit(Guid id, Department Mo...
asked by Zack Peterson
ASP.NET MVC, SQL Server, and Entity Framework are used to create a search box.
I have no experience building a search solution, but I'd like to have a search box within my solution and I don't know where to even begin. Are there cool SQL Server tricks that I can use to make my search solution performant (I'm using a hosted SQL 2008...
asked by Whozumommy
Looking for Entity Framework examples in ASP.NET MVC applications?
Are there any open-source examples of ASP.NET MVC applications that use the Entity Framework? I have found ...Nerd Dinner... to be helpful but it is using Linq to SQL....I am trying to use the Entity Framework in a strongly-typed ASP.NET MVC project and ...
asked by YeahStu
Json.Net is used to serialize Entity Framework objects.
How do I serialize entity framework object into JavaScript Object (JSON)? I tried using ...JSON.NET... but I am getting the following exception when I try to serialize it. ...Exception: Newtonsoft.Json.JsonSerializationException, Message="Self referencing...
asked by Hitesh
Video lessons on ASP.NET MVC, Entity Framework, and LINQ - including MIX09, PDC, and TechED
EDIT:...During this post I started searching on video tutorials on ASP.NET MVC, EF and LINQ and found some very useful links which I shared here. As I believe videos are more interactive and easier to learn from. Hope, they'll help....Guys, pl...
asked by Ramiz Uddin
Entity validation best practices in ASP.NET MVC and ADO.NET Entity Framework
i am using ASP.NET MVC & ADO.NET Entity Framework in a project. I want to add validation logic to my entities via partial classes. It works similar like shown in the ...NerdDinner.com ASP.NET MVC Application... which is using LINQ2SQL. The main difference...
asked by Alexander
At runtime, can Entity Framework connect to several databases (with the same schema)?
First of all, let me state I'm very new to EF. With that said, here's my dilemma:...There will be an ASP.NET App migrated to ASP.NET MVC. I would like to utilize EF for this. There is one main database which stores "client information". Apart from that, e...
asked by Kevin
On Mono 2.4, using Microsoft Data Entity Framework with Microsoft MVC
I'm using Mono 2.4 on the Ubiquity web hosting service....I created a simple MVC tutioal applciation, linked ...here..., and verified that it worked using all Microsoft tools. ...Next, the application was updated to point to a MySQL server database runnin...
asked by Allen
Is it possible that the combination of ADO.NET Entity Framework with ASP.MVC is incorrect?
I have one solution with three projects. ...DomainModel (C# Library with ADO.NET Entity Framework)...DomainModelTest (Unit Testing for Business Logic)...WebApp (Using DomainModel)...For some reason, I cannot even bring the view if I pass any of the object...
asked by Geo
Linq to Entities Bulk Insertion Guide
I cannot find any examples on how to do a Bulk/batch insert using Linq to Entities. Do you guys know how to do a Bulk Insert?
asked by Luke101
Select specified columns and return strongly typed without loosing cast using Entity Framework.
I'm trying to do something similar to ...this post... where I don't pull back all columns from a particular entity, however my framework makes use of inheritence and I lose scope of the entity type after it's been cast to an anonymous type. ...The structu...
asked by XVargas
When converting a datetime2 data type to a datetime data type, an out-of-range value was returned.
I have an ASP.NET MVC application where I am editing an existing database to update a paticular field, ...DateTime.... My database has 4 fields, two of which are ...DateCreated... and ...DateModified.... When I try to update the field, I want to keep ...D...
asked by Anthony Forloney
Data annotations and custom validation
I'm using data annotations to check data that's being entered, but I'm stuck when it comes to more custom way to validate data....I need to run queries against database to see if stuff exists there or not, and then report back to user if a "custom db-chec...
asked by Lasse Edsvik
Handling entity changes with Entity Framework and AutoMapper
I just started using the Entity Framework 1.0 recently and believe I am beginning to feel the pains everyone is talking about. I'm trying to use best practices so I have a set of DTO that get mapped to and from my Entities via AutoMapper....The real catch...
asked by jason
