How to fix System.Data.Edm.EdmEntityType has no key

Question

Does anybody know how to fix this error:

System.Data.Edm.EdmEntityType: : EntityType \'BlogTags\' has no key defined. Define the key for this EntityTy

Answer 1

Just put [Key] on top of your property (which is presenting primary key). Something like this,

[Key]
public int BlogTypeId { get; set; }