public void Add(StockmanModel stockman)
        {
            try
            {
                using (var ctx = new EntityContext())
                {
                    var color_id    = ctx.Color.Select(s => s).Where(w => w.Value == stockman.Цвет).FirstOrDefault();
                    var material_id = ctx.Material.Select(s => s).Where(w => w.Value == stockman.Материал).FirstOrDefault();

                    var fab = new FabricRoll
                    {
                        ColorId    = color_id.Id,
                        MaterialId = material_id.Id,
                        Width      = stockman.Ширина,
                        Length     = stockman.Длина
                    };

                    ctx.FabricRoll.Add(fab);
                    ctx.SaveChanges();
                    DialogService.ShowSuccess("Даные успешно добавлены!", "Успех!");
                }
            }
            catch (Exception)
            {
                throw;
            }
        }
 public void Delete(StockmanModel stockman)
 {
     try
     {
         using (var ctx = new EntityContext())
         {
             var fabric = ctx.FabricRoll.Select(s => s).Where(w => w.Id == stockman.Ид).FirstOrDefault();
             StockmanModels.Remove(StockmanModels.Select(s => s).Where(w => w.Ид == fabric.Id).FirstOrDefault());
             ctx.FabricRoll.Remove(fabric);
             ctx.SaveChanges();
         }
     }
     catch (Exception)
     {
         throw;
     }
 }
 public UpdateForm(StockmanModel model)
 {
     InitializeComponent();
     DataContext = context = new StockmanViewModel();
     stockman    = model;
 }