Creating a non mapped property in an entity (entity framework)

Question

I want to create a custom property on one of my entities mapped from the database, however this property is not mapped to the database, I created the property using partial classes but when trying to compile I get an error telling me that the property is not mapped. Is there an attribute or something I should add? Thanks in advance.

Answer 1

You can also mark your property with [NotMapped] attribute or use Ignore method from fluent API.

Property

public class EntityName {     [NotMapped]     private string PropertyName { get; } } 

Fluent API

 public class Entities : DbContext  {     public DbSet<EntityType> Users { get; set; }     protected override void OnModelCreating(DbModelBuilder modelBuilder)     {        // Some database configuration        modelBuilder.Entity<EntityType>()              .Ignore(i => i.PropertyName);      }  } 

Answer 2

Use partial classes to add the properties or methods you want added. E.g.

namespace WhateverNamespaceYourEntityModelIsIn {     public partial class  TheNameOfYourEntity     {           public string MyNewProperty { get; set; }     } } 

and that should do you.