RealEstateTransactions/RealEstateTransactions/Entities/Apartment.cs

@@ -25,6 +25,8 @@ namespace RealEstateTransactions.Entities
         [DisplayName("Стоимость от агенства")]
         public float Desired_price { get; private set; }
 
+        public string GetStr { get => $"{Agency_ID.ToString()} {Area.ToString()}"; } 
+
         public static Apartment CreateApartment(int id, AgencyType agencyId, FormFactorType formFactorId, float area,
             float pricePerSM, float basePrice, float desiredPrice)
         {

RealEstateTransactions/RealEstateTransactions/Forms/FormApartments.cs

@@ -80,6 +80,7 @@ namespace RealEstateTransactions.Forms
         {
             dataGridView.DataSource = _repository.ReadApartments();
             dataGridView.Columns["Id"].Visible = false;
+            dataGridView.Columns["GetStr"].Visible = false;
         }
 
         private bool TryGetIdentifierFormSelectedRow(out int id)

RealEstateTransactions/RealEstateTransactions/Forms/FormPriceReport.cs

@@ -13,7 +13,7 @@ namespace RealEstateTransactions.Forms
             InitializeComponent();
             _container = container ?? throw new ArgumentNullException(nameof(container));
             comboBoxApartmentId.DataSource = repository.ReadApartments();
-            comboBoxApartmentId.DisplayMember = "Id";
+            comboBoxApartmentId.DisplayMember = "GetStr";
             comboBoxApartmentId.ValueMember = "Id";
         }
 

RealEstateTransactions/RealEstateTransactions/Reports/ChartReport.cs

@@ -37,7 +37,7 @@ namespace RealEstateTransactions.Reports
         {
             return _dealRepository
             .ReadDeals(dateFrom: dateTime.Date, dateTo: dateTime.Date.AddDays(1))
-            .Select(x => (x.Apartment_ID.ToString(), (double)x.Deal_price))
+            .Select(x => (x.BuyerName, (double)x.Deal_price))
             .ToList();
         }
     }