Primary keys in Entity Framework Views

Entity Framework Foreign Key as Primary Key Code First

I thought I'd give this a shot and it worked nicely....public class FooState { [Required] [Key] [ForeignKey("Foo")] public int FooStateId { get; set; } [Required] public int State { get; set; } public Foo Foo { get; set; } }

Entity Framework: View exclusion without primary key

I am using SQL Server where I have designed a view to sum the results of two tables and I want the output to be a single table with the results. My query simplified is something like:...SELECT SUM(col1), col2, col3 FROM Table1 GROUP BY col2, col3 ...This gives me the data I want, but when updating my EDM the view is excluded because "a primary key ...

Code Generation : Add primary key / foreign key to Entity Framework

I ran into the same problem. The template file you are looking for appears in the Solution Explorer (in VS2013) as:...YourDataModelName.tt...You can modify it to add the ...[Key]... attributes to the generated code by following:...Finding a property is Primary Key in POCO Template t4 generator

Entity Framework 6.1.3 Mapping Foreign key to non primary key

This is now possible in Entity Framework 7 (that is, EF Core 1.0)....From .Net Entity Framework User Voice ...Unique Constraint (i.e. Candidate Key) Support...:...Support for this feature was added in EF Core 1.0 and we don’t have plans to add it in the EF6 codebase.

Entity framework issue "The table/view ' does not have a primary key defined."

I've found a workaround in Davis blog (link below) to supress this error, I'll paste it here. ...http://www.ericsdavis.net/index.php/2009/03/14/entity-framework-and-primary-key-inference/...Close the model designer in Visual Studio if it is still open and re-open the .edmx file in an XML editor;...Find the edmx:StorageModels -> Schema -> Entity Con...

Entity Framework code-first set foreign key with primary key in same table

This answer for your requirement of 2 foreign keys ...public class WdUser : SysDomainModelBase, IWdUser { //This is your primary key of WDUser public int UserID{get;set;} //This is for your 1st foreign key mapping public virtual WDUser WDUser{get;set;} public virtual ICollection<WDUser> WDUserList{get;set;} public int fk1{get;set;} //This is for y...

Entity Framework, Load multiple entities by primary key in a single query while still using caching

Not implicitly....Where()... will always query the database. To explicit query the cache you need to use ....Local...: ...dbContext.Entity.Local.Where(......This will not hit the database but it will only return entities that have been cached/loaded before....Good to know: to view the queries define a Log function like this: ...dbContext.Database.L...

Entity Framework composite key delete with one primary key

If you are using EF 6, you can use the RemoveRange method....So it could look something like this;...context.Cart.RemoveRange(cartItem => cartItem.CustomerID == CustomerToDelete);

Entity Framework Core "The entity type 'XXX' requires a primary key to be defined."

So I'm currently trying to create a code first migration with Entity Framework Core for a table that displays which lectures the application user has completed. My model looks like this:...public class LectureCompletion { [Key, Column(Order = 0)] [ForeignKey("Lecture")] public Lecture LectureId { get; set; } [Key, Column(Order = ...

Entity Framework foreign key that is not a primary key

I am having problems with my MSSQL database design....I had 2 tables that looked like this:...CREATE TABLE tenants ( tenantId INT PRIMARY KEY, tenantName VARCHAR ) CREATE TABLE users ( userId INT PRIMARY KEY, userName VARCHAR, tenantId INT, FOREIGN KEY (tenantId) REFERENCES tentants(tenantId) ) ...I wanted to switch from ...