Entity Framework composite key delete with one primary key

In Entity Framework 4, how do I map a composite main key first?

Additionally, utilize...HasKey(u => new { u.SubscriptionID, u.UserName }); ...Edit:...The following do not function, which is one restriction I have discovered:...public ProjectAssignmentConfiguration() { HasKey(u => u.Employee.EmployeeId); HasKey(u => u.Project.ProjectId); } ...or...public ProjectAssignmentConfiguration() { HasKey(u =>...

Foreign Key mapping to composite keys in entity framework

Here, you have two choices....Use the traits you have, such as:...[ForeignKey("PatientContact"), Column(Order = 0)] public int Person_ID{ get; set; } [ForeignKey("PatientContact"), Column(Order = 1)] public int Patient_ID{ get; set; } public virtual PatientContact PatientContact { get; set; } ...Utilize the model creator (fluent api)...modelBuilder...

Entity Framework Foreign Key as Primary Key Code First

I decided to try this, and it turned out to work well....public class FooState { [Required] [Key] [ForeignKey("Foo")] public int FooStateId { get; set; } [Required] public int State { get; set; } public Foo Foo { get; set; } }

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

I experienced the same issue. The solution explorer (in Visual Studio 2013) displays the template file you're looking for as:...YourDataModelName.tt...You can change it to include the...[Key]... the following characteristics to the created code:...The POCO Template T4 Generator's Primary Key is locating a property.

EntityFramework - Composite Key Table with FK to another Composite Key Table

If both, then...City... and ...Company... You want to establish a one-on-one connection. I'm sorry, but using your model makes it impossible. Entity Framework needs that the main key of the dependent end also be the foreign key when defining a one-to-one connection; otherwise, EF doesn't recognize the relationship as one-to-one. The dependent part...

Entity Framework 6.1.3 Mapping Foreign key to non primary key

Entity Framework 7 now makes this feasible (that is, EF Core 1.0)....From ...Unique Restrictions (i.e. Candidate Key) Support... of the.Net Entity Framework User Voice:...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 code-first set foreign key with primary key in same table

This response relates to your request for two 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 ...

How create composite foreign key to table with composite primary key

In order to use a composite foreign key, the navigation property must have the ...ForeignKey... attribute applied, which specifies a comma-separated list of the names of the foreign key properties:...If you add the ...ForeignKey... attribute to a foreign key property, you should specify the name of the associated navigation property. If you add the...

Mapping composite foreign key to composite primary key where the foreign key is also a primary key

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Entity Framework foreign key that is not a primary key

I wanted to switch from only IDs to GUIDs for uniqueness and changed the tables. ...To assure uniqueness, you don't really need to convert to GUIDs. As long as they are configured as your main keys, your IDs (regardless of what type they are, like integers), will be assured to be distinct....I have read that GUIDs as primary keys are not recommende...