Adding Where Condition to All Requests EF6

Question

Most of my entities (not all) have two properties called CompanyId and Deleted. How would be possible to auto insert these two pro

Answer 1

You can add filter with the help of nuget package: EntityFramework.Filters. Also, good idea is to create common interface instead of dynamically checking for properties existence:

public interface IMyEntityInterface
{
    public int Id {get;set;}
    public bool Deleted {get;set;}
}

public class MyEntity : IMyEntityInterface
{
    public int Id {get;set;}
    public bool Deleted {get;set;}
    //other stuff
}

protected override void OnModelCreating(DbModelBuilder modelBuilder) 
{   
    modelBuilder.Conventions
       .Add(FilterConvention.Create("MyFilter", (entity, Id, Deleted) => entity.Id == Id && entity.Deleted == Deleted);
}

Usage:

var filter = db.EnableFilter("MyFilter");
filter.SetParameter("Id", 1);
filter.SetParameter("Deleted", false);

var data = db.MyEntity.Where(me => me.CompanyId == 1).Select(me => me.Description);
//select Description from MyEntities where Id = 1 and Deleted = false and CompanyId = 1