Entity Framework 6 - Knowledge Base (KB)
20 results in tag: mapping
Entity Framework: tinyint to boolean mapping
by default Entity Framework maps tinyint to byte. ...i tried changing the underlying type after it was generated to Boolean, but getting compilation error ...Member Mapping specified is not valid. The type 'Edm.Boolean[Nullable=False,DefaultValue=]' of me...
asked by Sonic Soul
First List of Entity Framework Code Mapping of Properties
I am working with Entity Framework Code first. I have a simple model:...public class Variable { public string Name { get; set; } public int Id { get; set; } public IList<string> TextOptions { get; set; } } ...I ran in...
asked by Mike Bynum
DateTimeOffset to SQL Server DateTime Mapping in Entity Framework
Is there a way to map a ...DateTimeOffset... property to a SQL Server ...datetime... column, with the assumption that you can't change either side, meaning that the property and column have to stay those date types? ...I know the easiest is to make them m...
asked by Carlos
Framework for Entities A nullable entity property is mapped to a non-nullable column.
I am getting this nullable column error message in Entity Framework 4.1 - when the column is not actually nullable: ...Non-nullable column MyView.RunningTotal in table TransactionListView is mapped to a nullable entity property. ...But you can see from t...
asked by JK.
Entity Framework options to map list of strings or list of int (List<string>)
I want to store an object that contains a List of primitives using EF....public class MyObject { public int Id {get;set;} public virtual IList<int> Numbers {get;set;} } ...I know that ...EF cannot store... this, but I'd like to know possible solut...
asked by Bernhard Kircher
Entity Framework error - Error 11009: Property ' ' is not mapped
To improve an older project I am forced by the circumstances to use VS 2008 and Framework 3.5 - I have issues with the edmx showing bizarre behavior and not updating the entities as required....The edmx throws me the above error, but when I go to the resp...
asked by Amc_rtty
Why is EF code first throwing model backing context exception? Using 4.0.3
Heres the exception:...The model backing the 'ScannerContext' context has changed since the database was created. Consider using Code First Migrations to update the database (...http://go.microsoft.com/fwlink/?LinkId=238269...)....I get this every...
asked by jwrightmail
Entity Framework Code first mapping without foreign key
I have two tables: ...Requirement...ID (int) PK...ClientID (int)...JobNumber (int)...Comment...ID (int) PK...Job_ID (int)...Comment (varchar)...The tables don't have foreign keys and there's no possibility of adding any. I'm trying to map them in EF. I h...
asked by Matt
No mapping found for field
I have to Entities ...class Patients { /** * @ORM\OneToOne(targetEntity="ContactAddress", mappedBy="patients") */ protected $contactaddress; } ...And another...class ContactAddress { /** * @ORM\OneToOn...
asked by konadrian
Incompatible Data Reader Exception From EF Mapped Objects
I am using Entity Framework and have updated a table and its stored procedure but I'm getting the following error when the stored procedure is called....The data reader is incompatible with the specified 'FormValueModel.Valuation'. A member of the type,...
asked by Pomster
Why is The navigation property '' declared on type '' has been configured with conflicting multiplicities. error show up?
I have an ...Asp_Users... table and a ...Resource... tables. In the Entity Framework world, I have a ...Asp_Users... POCO and a ...Resource... POCO. Moreover, the ...Resource... POCO is abstract and is part of a Table-per-Hierarchy model. The Table-per-Hi...
asked by user1338998
One-to-Many relationship mapping returns validation errors
Edited with the new situation per suggestion in the comments:...Currently I have this mapping...public ShowMap() { ToTable("Shows"); HasKey(x => x.ShowID); Property(x => x.ShowID) .HasDatabaseGeneratedOption(DatabaseGe...
asked by Jeroen Vannevel
Entity Framework one to optional foreign key code first fluent mapping
Tables... User ------ UserId PK Access ------- AccessId PK UserId FK to User.UserId ...User Entity...public int Id { get; set; } public virtual Access Access { get; set; } ...Access Entity...public int Id { get; set; } ...
asked by fearofawhackplanet
Entity Framework proper way to replace collection in one to many
Suppose a customer has many phone numbers and a phone number has only one customer....public class PhoneNumber : IValueObject { public string Number {get; set;} public string Type {get; set;} } public class Customer : IEntity { public ICollection<...
asked by George Mauer
Entity Framework 6 Getter Only Property Influencing Entity Relationships
I am encountering a conceptual hurdle with how Entity Framework is inferring entity relationships. So while I have solved my problem, it doesn't make sense to me why it works....I have the following entities, here in simplified form, from the ...Geometry ...
asked by Scotty H
Mapping multiple entities to one table
In my application, I have an entity, say Customer which maps to Customer. This is working fine now....Our plan is to provide our current project as a reference to another client project. The client project also has a Customer table, but with some addition...
asked by user3625948
dbConnection.GetObject> Dapper Extensions
Problem with: Dapper Extensions dbConnection.Get(personId)...I have a model called Person:...Person { public int PersonId { get; set; } public string Name { get; set; } } ...In the database I have this table:...data.Persons Pers_Id Pers_Na...
asked by doper1234
automapper error mapping types of collection
Here are my viewmodels and datamodels...public class League{ ICollection<Player> Players{get;set;} } public class Player{ string name{get;set;} } public class LeagueViewModel{ ICollection<PlayerViewModel> Players{get;set;} } public class Pl...
asked by Jack
Updating entity framework model after changing the data type of column in database table
I am working with entity framework 6 with database 1st approach. I changed the datatype of my columns in the table and after updating my model I got the following error:...Error 1 Error 2019: Member Mapping specified is not valid. The type 'Edm.Int32...
asked by Amit Kaushal
C# Entity Framework database first symbol in column name
I'm working on a project with a database that has been around for a long time and people aren't too keen on changing anything in it (probably so they won't have to fix their other applications)....The SQL Server database has a column named ...FORM#... but...
asked by Macks Ruch
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