ef-model-first Questions
3
Solved
I'm creating a new database with the model-first approach and I want to add a column to a table of the type System.Drawing.Color but I don't have this option in the properties list.
Is there a way...
Dispassion asked 15/7, 2014 at 10:22
7
Solved
I have the following model-first (is that what it's called?) diagram that I have made. I use T4 to generate the classes.
Now, I have a problem that causes Entity Framework to somehow append a "1...
Ironworks asked 20/2, 2014 at 12:12
4
Solved
In Entity Framework 5 model first, there seem to be some breaking changes due to the way the class files are generated (No more code generation, but T4 templates)
2 examples:
The generated cont...
Seigniorage asked 20/9, 2012 at 7:39
3
Solved
How can I prevent the use of the parameterless constructor of the generated DbContext?
var dcx = new DataEntities();
The default constructor is generated by the T4 template, and I thus cannot ov...
Discontinuation asked 28/7, 2014 at 9:46
6
Solved
I just upgraded to Entity Framework Core 2 and now I'm getting issues with an extra column existing and having a unique key even though it's not in my model and it's not defined anywhere else.
The...
Gertrudis asked 26/9, 2017 at 23:23
10
Solved
I have problem, I have just started learning EF Model First and Im staying in one point for some time. I got such error :
"An error occurred while updating the entries. See the inner excepti...
Gaiseric asked 13/6, 2014 at 22:59
2
I want to create a nullable foreign key with type GUID like this
[ForeignKey("CreatedBy")]
[Display(Name = "Created by")]
public Guid? CreatedById { get; set; }
public virtual User CreatedBy { g...
Incinerate asked 23/9, 2014 at 16:40
3
Solved
So I am learning MVC3 and EF4.
I tried the code first method but it was too confusing for me.. I can create the classes no problem, but the hard part comes when dealing with foreign keys and the r...
Mardis asked 15/5, 2011 at 2:37
2
This is a long question, but I would be very very thankful if I can get some good advice on this. In short, I’m looking for a good approach for version upgrade of MS SQL database schema that also d...
Swelling asked 29/5, 2013 at 2:23
4
Solved
I've created a database model with model-first method using Entity Framework 4.0. I then created an sql script using the Generate Database from Model... I've also created an SQL Server Database fil...
Terrenceterrene asked 20/11, 2010 at 18:21
1
Solved
I have two tables with below structure :
*Table User*
id int identity
username varchar
role varchar
*Table Ticket*
id int identity
admin_id int
user_id int
admin_id and user_id are the forei...
Char asked 17/8, 2014 at 20:46
4
Solved
I give up.
I found this:
http://blogs.msdn.com/b/adonet/archive/2011/03/15/ef-4-1-model-amp-database-first-walkthrough.aspx
And thought, that's cool.
So I quickly redesigned my model to take advant...
Stapleton asked 9/5, 2011 at 17:55
0
This question is part of my following one I already asked roughly 2.5 years ago:
Entity Framework (.NET) Round-Trip Modelling with Model First?
I wanted to ask if in the meantime, the following is...
Plush asked 25/2, 2015 at 19:42
3
Solved
Im using EF4 in VS2010, POCO's and the model-first approach.
My entity has the following properties: Id:Guid, Name:String, Created:DateTime, Modified:DateTime, Revision:Int32.
I create my entity,...
Necktie asked 12/10, 2010 at 19:7
3
Solved
I'm working on a model first EF6 model in model first approach.
EF exposes more than DBGeometry and DBGeography and allows me to select specific subtypes when designing the model (like GeographyPo...
Charity asked 11/9, 2014 at 23:16
1
Like several others I have tried to implement ASP.NET Identity Model First. Everything works fine once you have tried, errored, fumed, searched and resolved.. I thought.
See also:
ASP.NET Ident...
Melchizedek asked 16/7, 2014 at 7:51
5
EF has generated for me some partial classes, each with a constructor, but it says not to touch them (example below), now if I make my own secondary partial class and I want to have a constructor t...
Erasure asked 23/1, 2013 at 16:53
1
Solved
EDIT
I've done some testing and found out, that the Item navigation property only works when the context is disposed/a new context is created.
DataContext context = new DataContext();
Order ord...
Brede asked 26/2, 2014 at 12:58
2
Solved
Code first migrations have been working very well for me. I have a services project and a wpf project. The model is in the services project which is referenced by the wpf project. Update-database i...
Armistice asked 3/2, 2014 at 16:38
1
Solved
Desired outcome:
Use model first approach with Entity Framework and allow changes to deployed database/ model to be done automatically based on the changes in the model. Automatic schema differen...
Puerile asked 27/1, 2014 at 23:5
2
I am developing Entity Framework based app. I am using model-first approach. I would like to handle the concurrency issues. As written in many articles I am going to do it by turning the Concurrenc...
Azotic asked 6/3, 2012 at 9:27
3
Is there an alternative to using Include to eager load entities?
The reason I can't use Include is that it appears to be case sensitive.
Consider the following example:
I have two tables:
Not...
Coltish asked 19/11, 2013 at 9:59
4
Solved
I have some models and tables in EF that you can see one of those here:
Now when I want to generate database from model it adds 's' to name of tables in generated sql:
CREATE TABLE [dbo].[Optio...
Apterygial asked 20/6, 2013 at 17:37
2
Solved
I have setup a system where I have taken the model first approach as it made more logical sense for me. Now when even I have some changes in the model currently what I do is -
Use the Generate d...
Birdbath asked 12/8, 2012 at 7:33
1
This is a MODEL first approach. I have already researched this extensiely and have not come up with an answer. I have tried all the suggestions at the following links:
This appears to be the same ...
Evictee asked 13/12, 2012 at 16:23
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