public static void AddOrCreateEntity <T>(this EStoreEntities db, T entity) where T : class, IdEntity
{
var entityState = entity.Id == 0 ? EntityState.Added : EntityState.Modified;
db.Entry(entity).State = entityState;
db.SaveChanges();
}
public static void Save <T>(this EStoreEntities db, T entity) where T : class, IdEntity
{
db.Set <T>().Attach(entity);
db.Entry(entity).State = entity.Id == 0 ? EntityState.Added : EntityState.Modified;
db.SaveChanges();
}