Лаба4, промежуток.

TradeAndProcurementEnterprice/TradeAndProcurementEnterprice/Entities/Agent.cs

@@ -1,5 +1,6 @@
 using System;
 using System.Collections.Generic;
+using System.ComponentModel;
 using System.Linq;
 using System.Text;
 using System.Threading.Tasks;
@@ -11,18 +12,27 @@ public class Agent
 {
     public int Id { get; private set; }
 
+    [DisplayName("Имя")]
     public string Name { get; private set; } = string.Empty;
 
+    [DisplayName("Фамилия")]
+    public string Surname { get; private set; } = string.Empty;
+
+    [DisplayName("Квалификация")]
     public Qualification Qualification { get; private set; }
 
+    [DisplayName("Категория")]
     public Category Category { get; private set; }
 
-    public static Agent CreateEntity(int id, string name, Qualification qualification, Category category)
+    public string FullName => $"{Name} {Surname}";
+
+    public static Agent CreateEntity(int id, string name, string surname, Qualification qualification, Category category)
     {
         return new Agent
         {
             Id = id,
             Name = name ?? string.Empty,
+            Surname = surname ?? string.Empty,
             Qualification = qualification,
             Category = category
         };

TradeAndProcurementEnterprice/TradeAndProcurementEnterprice/Entities/Contract.cs

@@ -1,5 +1,7 @@
-using System;
+using DocumentFormat.OpenXml.Spreadsheet;
+using System;
 using System.Collections.Generic;
+using System.ComponentModel;
 using System.Linq;
 using System.Text;
 using System.Threading.Tasks;
@@ -10,12 +12,27 @@ public class Contract
 {
     public int ID { get; private set; }
 
+    [DisplayName("Дата продажи")]
     public DateTime SaleDate { get; private set; }
 
+    [Browsable(false)]
     public int PurchasingCompanyID { get; private set; }
 
+    [Browsable(false)]
     public int AgentsID { get; private set; }
 
+    [DisplayName("Агент-реализатор")]
+    public string AgentsName { get; private set; } = string.Empty;
+
+    [DisplayName("Компания-закупщик")]
+    public string CompanyName { get; private set; } = string.Empty;
+
+    [DisplayName("Номенклатура")]
+    public string Product => ProductSales != null ?
+        string.Join(", ", ProductSales.Select(x => $"{x.ProductName} {x.ProductQuantity}")) :
+        string.Empty;
+
+    [Browsable(false)]
     public IEnumerable<ProductSales> ProductSales { get; private set; } = [];
 
     public static Contract CreateOperation(int contractID, int purchasingCompanyID, int agentsID, IEnumerable<ProductSales> productSales)
@@ -30,16 +47,11 @@ public class Contract
         };
     }
 
-    public static Contract CreateOperation(TempProductSales tempProductSales,
-        IEnumerable<ProductSales> productSales)
+    public void SetProductSales(IEnumerable<ProductSales> productSales)
     {
-        return new Contract
+        if (productSales != null && productSales.Any())
         {
-            ID = tempProductSales.ID,
-            AgentsID = tempProductSales.AgentsId,
-            SaleDate = tempProductSales.SaleDate,
-            PurchasingCompanyID = tempProductSales.PurchasingCompanyId,
-            ProductSales = productSales
-        };
+            ProductSales = productSales;
+        } 
     }
 }

TradeAndProcurementEnterprice/TradeAndProcurementEnterprice/Entities/DelegateToAgents.cs

@@ -1,5 +1,6 @@
 using System;
 using System.Collections.Generic;
+using System.ComponentModel;
 using System.Linq;
 using System.Text;
 using System.Threading.Tasks;
@@ -9,12 +10,25 @@ namespace TradeAndProcurementEnterprice.Entities;
 public class DelegateToAgents
 {
     public int Id { get; private set; }
+
+    [Browsable(false)]
     public int ProductArticle { get; private set; }
 
+    [Browsable(false)]
     public int AgentsID { get; private set; }
 
+    [DisplayName("Номенклатура")]
+    public string ProductName { get; private set; } = string.Empty;
+
+    [DisplayName("Имя агента")]
+    public string AgentsName { get; private set; } = string.Empty;
+
+
+    [DisplayName("Количество товара")]
     public int Quantity { get; private set; }
 
+
+    [DisplayName("Дата передачи")]
     public DateTime Date { get; private set; }
 
     public static DelegateToAgents CreateOperation(int id, int productArticle, int agentsID, int quantity)

TradeAndProcurementEnterprice/TradeAndProcurementEnterprice/Entities/Product.cs

@@ -1,8 +1,4 @@
-using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Text;
-using System.Threading.Tasks;
+using System.ComponentModel;
 using TradeAndProcurementEnterprice.Entities.Enums;
 
 namespace TradeAndProcurementEnterprice.Entities;
@@ -11,14 +7,20 @@ public class Product
 {
     public int Article { get; private set; }
 
+    [DisplayName("Номенклатура")]
     public string Name { get; private set; } = string.Empty;
 
+    [DisplayName("Цена")]
     public decimal SellingPrice { get; private set; }
 
+    [DisplayName("Единица измерения")]
     public Units Unit { get; private set; }
 
+    [DisplayName("Категория")]
     public Category Category { get; private set; }
 
+
+    [DisplayName("Количество на складе")]
     public int InventoryQuantity { get; private set; }
 
     public static Product CreateEntity(int article, string name, decimal sellingPrice, Units unit, 

TradeAndProcurementEnterprice/TradeAndProcurementEnterprice/Entities/ProductSales.cs

@@ -12,6 +12,8 @@ public class ProductSales
 
     public int ProductArticle { get; private set; }
 
+    public string ProductName { get; private set; } = string.Empty;
+
     public int ProductQuantity { get; private set; }
 
     public static ProductSales CreateElement(int id, int prodictArticle, int productQuantity)

TradeAndProcurementEnterprice/TradeAndProcurementEnterprice/Entities/PurchasingCompany.cs

@@ -1,5 +1,6 @@
 using System;
 using System.Collections.Generic;
+using System.ComponentModel;
 using System.Linq;
 using System.Text;
 using System.Threading.Tasks;
@@ -10,6 +11,7 @@ public class PurchasingCompany
 {
     public int Id { get; private set; }
 
+    [DisplayName("Наименование компании")]
     public string Name { get; private set; } = string.Empty;
 
     public static PurchasingCompany CreateEntity(int id, string name)

TradeAndProcurementEnterprice/TradeAndProcurementEnterprice/Entities/TempProductSales.cs

@@ -1,22 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Text;
-using System.Threading.Tasks;
-
-namespace TradeAndProcurementEnterprice.Entities;
-
-public class TempProductSales
-{
-    public int ID { get; private set; }
-
-    public int AgentsId { get; private set; }
-
-    public DateTime SaleDate { get; private set; }
-
-    public int PurchasingCompanyId { get; private set; }
-
-    public int ProductArticle {  get; private set; }
-
-    public int ProductQuantity { get; private set; }
-}

TradeAndProcurementEnterprice/TradeAndProcurementEnterprice/Forms/FormAgent.Designer.cs

@@ -36,15 +36,16 @@
             labelQualification = new Label();
             labelName = new Label();
             checkedListBoxCategory = new CheckedListBox();
+            labelSurname = new Label();
+            textBoxSurname = new TextBox();
             SuspendLayout();
             // 
             // buttonCancel
             // 
             buttonCancel.Anchor = AnchorStyles.Bottom | AnchorStyles.Right;
-            buttonCancel.Location = new Point(280, 412);
-            buttonCancel.Margin = new Padding(6, 6, 6, 6);
+            buttonCancel.Location = new Point(151, 227);
             buttonCancel.Name = "buttonCancel";
-            buttonCancel.Size = new Size(156, 49);
+            buttonCancel.Size = new Size(84, 23);
             buttonCancel.TabIndex = 16;
             buttonCancel.Text = "Отмена";
             buttonCancel.UseVisualStyleBackColor = true;
@@ -53,10 +54,9 @@
             // buttonSave
             // 
             buttonSave.Anchor = AnchorStyles.Bottom | AnchorStyles.Left;
-            buttonSave.Location = new Point(80, 412);
-            buttonSave.Margin = new Padding(6, 6, 6, 6);
+            buttonSave.Location = new Point(43, 227);
             buttonSave.Name = "buttonSave";
-            buttonSave.Size = new Size(156, 49);
+            buttonSave.Size = new Size(84, 23);
             buttonSave.TabIndex = 17;
             buttonSave.Text = "Сохранить";
             buttonSave.UseVisualStyleBackColor = true;
@@ -67,76 +67,88 @@
             comboBoxQualification.Anchor = AnchorStyles.Top | AnchorStyles.Left | AnchorStyles.Right;
             comboBoxQualification.DropDownStyle = ComboBoxStyle.DropDownList;
             comboBoxQualification.FormattingEnabled = true;
-            comboBoxQualification.Location = new Point(217, 124);
-            comboBoxQualification.Margin = new Padding(6, 6, 6, 6);
+            comboBoxQualification.Location = new Point(115, 103);
             comboBoxQualification.Name = "comboBoxQualification";
-            comboBoxQualification.Size = new Size(273, 40);
+            comboBoxQualification.Size = new Size(149, 23);
             comboBoxQualification.TabIndex = 14;
             // 
             // textBoxName
             // 
             textBoxName.Anchor = AnchorStyles.Top | AnchorStyles.Left | AnchorStyles.Right;
-            textBoxName.Location = new Point(217, 38);
-            textBoxName.Margin = new Padding(6, 6, 6, 6);
+            textBoxName.Location = new Point(117, 18);
             textBoxName.Name = "textBoxName";
-            textBoxName.Size = new Size(273, 39);
+            textBoxName.Size = new Size(149, 23);
             textBoxName.TabIndex = 11;
             // 
             // labelCategory
             // 
             labelCategory.AutoSize = true;
-            labelCategory.Location = new Point(39, 220);
-            labelCategory.Margin = new Padding(6, 0, 6, 0);
+            labelCategory.Location = new Point(19, 148);
             labelCategory.Name = "labelCategory";
-            labelCategory.Size = new Size(126, 32);
+            labelCategory.Size = new Size(63, 15);
             labelCategory.TabIndex = 7;
             labelCategory.Text = "Категория";
             // 
             // labelQualification
             // 
             labelQualification.AutoSize = true;
-            labelQualification.Location = new Point(43, 130);
-            labelQualification.Margin = new Padding(6, 0, 6, 0);
+            labelQualification.Location = new Point(21, 106);
             labelQualification.Name = "labelQualification";
-            labelQualification.Size = new Size(174, 32);
+            labelQualification.Size = new Size(88, 15);
             labelQualification.TabIndex = 8;
             labelQualification.Text = "Квалификация";
             // 
             // labelName
             // 
             labelName.AutoSize = true;
-            labelName.Location = new Point(39, 53);
-            labelName.Margin = new Padding(6, 0, 6, 0);
+            labelName.Location = new Point(21, 25);
             labelName.Name = "labelName";
-            labelName.Size = new Size(67, 32);
+            labelName.Size = new Size(31, 15);
             labelName.TabIndex = 10;
-            labelName.Text = "ФИО";
+            labelName.Text = "Имя";
             // 
             // checkedListBoxCategory
             // 
             checkedListBoxCategory.Anchor = AnchorStyles.Top | AnchorStyles.Left | AnchorStyles.Right;
             checkedListBoxCategory.FormattingEnabled = true;
-            checkedListBoxCategory.Location = new Point(217, 211);
-            checkedListBoxCategory.Margin = new Padding(6, 6, 6, 6);
+            checkedListBoxCategory.Location = new Point(115, 144);
             checkedListBoxCategory.Name = "checkedListBoxCategory";
-            checkedListBoxCategory.Size = new Size(273, 148);
+            checkedListBoxCategory.Size = new Size(149, 58);
             checkedListBoxCategory.TabIndex = 18;
             // 
+            // labelSurname
+            // 
+            labelSurname.AutoSize = true;
+            labelSurname.Location = new Point(21, 66);
+            labelSurname.Name = "labelSurname";
+            labelSurname.Size = new Size(58, 15);
+            labelSurname.TabIndex = 10;
+            labelSurname.Text = "Фамилия";
+            // 
+            // textBoxSurname
+            // 
+            textBoxSurname.Anchor = AnchorStyles.Top | AnchorStyles.Left | AnchorStyles.Right;
+            textBoxSurname.Location = new Point(117, 59);
+            textBoxSurname.Name = "textBoxSurname";
+            textBoxSurname.Size = new Size(149, 23);
+            textBoxSurname.TabIndex = 12;
+            // 
             // FormAgent
             // 
-            AutoScaleDimensions = new SizeF(13F, 32F);
+            AutoScaleDimensions = new SizeF(7F, 15F);
             AutoScaleMode = AutoScaleMode.Font;
-            ClientSize = new Size(549, 504);
+            ClientSize = new Size(301, 285);
             Controls.Add(checkedListBoxCategory);
             Controls.Add(buttonCancel);
             Controls.Add(buttonSave);
             Controls.Add(comboBoxQualification);
+            Controls.Add(textBoxSurname);
             Controls.Add(textBoxName);
             Controls.Add(labelCategory);
+            Controls.Add(labelSurname);
             Controls.Add(labelQualification);
             Controls.Add(labelName);
-            Margin = new Padding(6, 6, 6, 6);
-            MinimumSize = new Size(575, 575);
+            MinimumSize = new Size(317, 290);
             Name = "FormAgent";
             StartPosition = FormStartPosition.CenterParent;
             Text = "Агент-реализатор";
@@ -154,5 +166,7 @@
         private Label labelQualification;
         private Label labelName;
         private CheckedListBox checkedListBoxCategory;
+        private Label labelSurname;
+        private TextBox textBoxSurname;
     }
 }

TradeAndProcurementEnterprice/TradeAndProcurementEnterprice/Forms/FormAgent.cs

@@ -35,6 +35,7 @@ namespace TradeAndProcurementEnterprice.Forms
                 }
                 
                 textBoxName.Text = agent.Name; 
+                textBoxSurname.Text = agent.Surname;
                 comboBoxQualification.SelectedItem = agent.Qualification; foreach (Category elem in Enum.GetValues(typeof(Category)))
                 {
                     if ((elem & agent.Category) != 0)
@@ -69,7 +70,8 @@ namespace TradeAndProcurementEnterprice.Forms
         {
             try 
             {
-                if (string.IsNullOrWhiteSpace(textBoxName.Text) || checkedListBoxCategory.CheckedItems.Count == 0 || comboBoxQualification.SelectedIndex < 1) 
+                if (string.IsNullOrWhiteSpace(textBoxName.Text) || string.IsNullOrWhiteSpace(textBoxSurname.Text) || 
+                    checkedListBoxCategory.CheckedItems.Count == 0 || comboBoxQualification.SelectedIndex < 1) 
                 { 
                     throw new Exception("Имеются незаполненные поля!"); 
                 } 
@@ -101,7 +103,7 @@ namespace TradeAndProcurementEnterprice.Forms
                 category |= (Category)elem;
             }
 
-            return Agent.CreateEntity(id, textBoxName.Text, (Qualification)comboBoxQualification.SelectedItem,
+            return Agent.CreateEntity(id, textBoxName.Text, textBoxSurname.Text, (Qualification)comboBoxQualification.SelectedItem,
                 category);
         }
     }

TradeAndProcurementEnterprice/TradeAndProcurementEnterprice/Forms/FormAgents.cs

@@ -97,7 +97,12 @@ namespace TradeAndProcurementEnterprice.Forms
             }
         }
 
-        private void LoadList() => dataGridViewData.DataSource = _agentsRepository.ReadAgents();
+        private void LoadList() 
+        {
+            dataGridViewData.DataSource = _agentsRepository.ReadAgents();
+            dataGridViewData.Columns["Id"].Visible = false;
+            dataGridViewData.Columns["FullName"].Visible = false;
+        }
 
         private bool TryGetIdFromSelectedRow(out int id)
         {

TradeAndProcurementEnterprice/TradeAndProcurementEnterprice/Forms/FormContract.cs

@@ -29,7 +29,7 @@ namespace TradeAndProcurementEnterprice.Forms
             comboBoxPurchasingCompany.ValueMember = "Id";
 
             comboBoxAgent.DataSource = agentsRepository.ReadAgents();
-            comboBoxAgent.DisplayMember = "Name";
+            comboBoxAgent.DisplayMember = "FullName";
             comboBoxAgent.ValueMember = "Id";
 
             ColumnProduct.DataSource = productRepository.ReadProducts();

TradeAndProcurementEnterprice/TradeAndProcurementEnterprice/Forms/FormContracts.cs

@@ -53,6 +53,11 @@ namespace TradeAndProcurementEnterprice.Forms
             }
         }
 
-        private void LoadList() => dataGridViewData.DataSource = _contractRepository.ReadContracts();
+        private void LoadList()
+        {
+            dataGridViewData.DataSource = _contractRepository.ReadContracts();
+            dataGridViewData.Columns["Id"].Visible = false;
+            dataGridViewData.Columns["SaleDate"].DefaultCellStyle.Format = "dd.MM.yyyy";
+        }
     }
 }

TradeAndProcurementEnterprice/TradeAndProcurementEnterprice/Forms/FormDelegateToAgent.cs

@@ -28,7 +28,7 @@ namespace TradeAndProcurementEnterprice.Forms
             comboBoxProduct.ValueMember = "Article";
 
             comboBoxAgent.DataSource = agentsRepository.ReadAgents();
-            comboBoxAgent.DisplayMember = "Name";
+            comboBoxAgent.DisplayMember = "FullName";
             comboBoxAgent.ValueMember = "Id";
         }
 

TradeAndProcurementEnterprice/TradeAndProcurementEnterprice/Forms/FormDelegatesToAgents.cs

@@ -51,6 +51,11 @@ namespace TradeAndProcurementEnterprice.Forms
                 MessageBox.Show(ex.Message, "Ошибка при добавлении!", MessageBoxButtons.OK, MessageBoxIcon.Error);
             }
         }
-        private void LoadList() => dataGridViewData.DataSource = _delegateToAgentRepository.ReadDelegatesToAgent();
+        private void LoadList()
+        {
+            dataGridViewData.DataSource = _delegateToAgentRepository.ReadDelegatesToAgent();
+            dataGridViewData.Columns["Id"].Visible = false;
+            dataGridViewData.Columns["Date"].DefaultCellStyle.Format = "dd MMMM yyyy hh:mm";
+        }
     }
 }

TradeAndProcurementEnterprice/TradeAndProcurementEnterprice/Forms/FormProducts.cs

@@ -95,7 +95,11 @@ namespace TradeAndProcurementEnterprice.Forms
             }
         }
 
-        private void LoadList() => dataGridViewData.DataSource = _productRepository.ReadProducts();
+        private void LoadList()
+        {
+            dataGridViewData.DataSource = _productRepository.ReadProducts();
+            dataGridViewData.Columns["Article"].Visible = false;
+        } 
 
         private bool TryGetIdFromSelectedRow(out int id)
         {

TradeAndProcurementEnterprice/TradeAndProcurementEnterprice/Forms/FormPurchasingCompanies.cs

@@ -97,8 +97,11 @@ namespace TradeAndProcurementEnterprice.Forms
             }
         }
 
-        private void LoadList() => dataGridViewData.DataSource = _companyRepository.ReadCompanies();
-
+        private void LoadList()
+        {
+            dataGridViewData.DataSource = _companyRepository.ReadCompanies(); 
+            dataGridViewData.Columns["Id"].Visible = false;
+        }
         private bool TryGetIdFromSelectedRow(out int id)
         {
             id = 0;

TradeAndProcurementEnterprice/TradeAndProcurementEnterprice/Reports/TableReport.cs

@@ -35,7 +35,7 @@ internal class TableReport
         {
             new ExcelBuilder(filePath)
                 .AddHeader("Сводка по передвижению товара", 0, 4)
-                .AddParagraph("За период", 0)
+                .AddParagraph($"За период с {startDate: dd.MM.yyyy} по {endDate: dd.MM.yyyy}", 0)
                 .AddTable([10, 10, 15, 15], GetData(productArticle, startDate, endDate))
                 .Build();
 
@@ -51,11 +51,10 @@ internal class TableReport
     private List<string[]> GetData(int productArticle, DateTime startDate, DateTime endDate)
     {
         var data = _contractRepository
-             .ReadContracts()
-             .Where(x => x.SaleDate >= startDate && x.SaleDate <= endDate && x.ProductSales.Any(y => y.ProductArticle == productArticle))
+             .ReadContracts(dateFrom: startDate, dateTo: endDate, productArticle: productArticle)
              .Select(x => new 
              {
-                 x.AgentsID, 
+                 x.AgentsName, 
                  CurrentDate = x.SaleDate, 
                  CountIn = (int?)null,
                  CountOut = x.ProductSales.FirstOrDefault(y => y.ProductArticle == productArticle)?.ProductQuantity
@@ -66,7 +65,7 @@ internal class TableReport
                     .Where(x => x.Date >= startDate && x.Date <= endDate && x.ProductArticle == productArticle)
                     .Select(x => new 
                     {
-                        x.AgentsID, 
+                        x.AgentsName, 
                         CurrentDate = x.Date,
                         CountIn = (int?)x.Quantity,
                         CountOut = (int?)null 

TradeAndProcurementEnterprice/TradeAndProcurementEnterprice/Repositories/IContractRepository.cs

@@ -10,7 +10,7 @@ namespace TradeAndProcurementEnterprice.Repositories;
 public interface IContractRepository
 {
     IEnumerable<Contract> ReadContracts(DateTime? dateFrom = null, DateTime? dateTo = null, 
-        int? productArticle = null, int? agentID = null, int? purchasingCompaniID = null);
+        int? productArticle = null, int? agentID = null, int? purchasingCompanyID = null);
 
     void CreateContract(Contract contract);
 }

TradeAndProcurementEnterprice/TradeAndProcurementEnterprice/Repositories/Implementations/AgentsRepository.cs

@@ -34,8 +34,8 @@ internal class AgentsRepository : IAgentsRepository
             using var connection = new NpgsqlConnection(_connectionString.ConnectionString);
 
             var queryInsert = @"
-INSERT INTO Agents (Name, Qualification, Category)
-VALUES (@Name, @Qualification, @Category)";
+INSERT INTO Agents (Name, Surname, Qualification, Category)
+VALUES (@Name, @Surname, @Qualification, @Category)";
             connection.Execute(queryInsert, agent);
         }
         catch (Exception ex)
@@ -118,6 +118,7 @@ WHERE Id=@id";
 UPDATE Agents
 SET
         Name=@Name,
+        Surname=@Surname,
         Qualification=@Qualification,
         Category=@Category
 WHERE Id=@Id";

TradeAndProcurementEnterprice/TradeAndProcurementEnterprice/Repositories/Implementations/ContractRepository.cs

@@ -57,20 +57,75 @@ VALUES (@ID, @ProductArticle, @ProductQuantity)";
         }
     }
 
-    public IEnumerable<Contract> ReadContracts(DateTime? dateFrom = null, DateTime? dateTo = null, int? productArticle = null, int? agentID = null, int? purchasingCompaniID = null)
+    public IEnumerable<Contract> ReadContracts(DateTime? dateFrom = null, DateTime? dateTo = null, int? productArticle = null, 
+        int? agentID = null, int? purchasingCompanyID = null)
     {
         _logger.LogInformation("Получение всех объектов.");
         try
         {
+            var builder = new QueryBuilder();
+            if (dateFrom.HasValue)
+            {
+                builder.AddCondition("c.SaleDate >= @dateForm");
+            }
+            if (dateTo.HasValue)
+            {
+                builder.AddCondition("c.SaleDate <= @dateTo");
+            }
+            if (productArticle.HasValue)
+            {
+                builder.AddCondition("c.ProductArticle = @productArticle");
+            }
+            if (agentID.HasValue)
+            {
+                builder.AddCondition("c.AgentsId = @agentsID");
+            }
+            if (purchasingCompanyID.HasValue)
+            {
+                builder.AddCondition("c.PurchasingCompanyID = @purchasingCompanyID");
+            }
+
+
             using var connection = new NpgsqlConnection(_connectionString.ConnectionString);
-            var querySelect = @"
-SELECT c.*, ps.ProductArticle, ps.ProductQuantity FROM Contracts c
-INNER JOIN ProductSales ps ON ps.ID = c.ID";
-            var contracts = connection.Query<TempProductSales>(querySelect);
+            var querySelect = @$"
+SELECT 
+    c.*, 
+    CONCAT(a.Name, ' ', a.Surname) as AgentsName,
+    pc.Name as CompanyName,
+    ps.ProductArticle, 
+    ps.ProductQuantity,
+    p.Name as ProductName
+FROM Contracts c
+LEFT JOIN Agents a on a.Id = c.AgentsId 
+LEFT JOIN purchasingcompanies pc on pc.Id = c.PurchasingCompanyID
+INNER JOIN ProductSales ps ON ps.ID = c.ID
+LEFT JOIN Products p on p.Article = ps.ProductArticle
+{builder.Build()}";
+
+            var salesDict = new Dictionary<int, List<ProductSales>>();
+
+            var contracts = connection.Query<Contract, ProductSales, Contract>(querySelect,
+                (sales, contract) =>
+                {
+                    if (!salesDict.TryGetValue(sales.ID, out var ps))
+                    {
+                        ps = [];
+                        salesDict.Add(sales.ID, ps);
+                    }
+
+                    ps.Add(contract);
+                    return sales;
+                }, splitOn: "ProductArticle", param: new { dateFrom, dateTo, productArticle, agentID, purchasingCompanyID });
+
             _logger.LogDebug("Полученные объекты: {json}", JsonConvert.SerializeObject(contracts));
-            return contracts.GroupBy(x => x.ID, y => y,
-                (key, value) => Contract.CreateOperation(value.First(),
-                value.Select(z => ProductSales.CreateElement(0, z.ProductArticle, z.ProductQuantity)))).ToList();
+
+            return salesDict.Select(x =>
+            {
+                var c = contracts.First(y => y.ID == x.Key);
+                c.SetProductSales(x.Value);
+                return c;
+            }).ToArray();
+
         }
         catch (Exception ex)
         {

TradeAndProcurementEnterprice/TradeAndProcurementEnterprice/Repositories/Implementations/DelegateToAgentRepository.cs

@@ -43,13 +43,38 @@ VALUES (@ProductArticle, @AgentsID, @Quantity, @Date)";
         }
     }
 
-    public IEnumerable<DelegateToAgents> ReadDelegatesToAgent(DateTime? dateFrom = null, DateTime? dateTo = null, int? productArticle = null, int? agentID = null)
+    public IEnumerable<DelegateToAgents> ReadDelegatesToAgent(DateTime? dateFrom = null, DateTime? dateTo = null, 
+        int? productArticle = null, int? agentID = null)
     {
         _logger.LogInformation("Получение всех объектов.");
         try
         {
+            /*var builder = new QueryBuilder(); 
+            if (dateFrom.HasValue) 
+            {
+                builder.AddCondition("dta.Date >= @dateFrom"); }
+            if (dateTo.HasValue) 
+            {
+                builder.AddCondition("dta.Date <= @dateTo"); 
+            }
+            if (productArticle.HasValue) 
+            {
+                builder.AddCondition("dta.ProductArticle = @productArticle"); 
+            }
+            if (agentID.HasValue) 
+            {
+                builder.AddCondition("dta.AgentsId = @agentsID"); 
+            }*/
+
             using var connection = new NpgsqlConnection(_connectionString.ConnectionString);
-            var querySelect = "SELECT * FROM DelegateToAgents";
+            var querySelect = @$"SELECT
+    dta.*,
+    p.Name as ProductName,
+    CONCAT(a.Name, ' ', a.Surname) as AgentsName
+FROM DelegateToAgents dta
+LEFT JOIN Agents a on a.Id = dta.AgentsId
+LEFT JOIN Products p on p.Article = dta.ProductArticle";
+//{builder.Build()}";
             var delegatesToAgents = connection.Query<DelegateToAgents>(querySelect);
             _logger.LogDebug("Полученные объекты: {json}", JsonConvert.SerializeObject(delegatesToAgents));
             return delegatesToAgents;

TradeAndProcurementEnterprice/TradeAndProcurementEnterprice/Repositories/Implementations/QueryBuilder.cs

@@ -0,0 +1,37 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace TradeAndProcurementEnterprice.Repositories.Implementations;
+
+internal class QueryBuilder
+{
+    private readonly StringBuilder _builder;
+
+    public QueryBuilder()
+    {
+        _builder = new();
+    }
+
+    public QueryBuilder AddCondition(string condition)
+    {
+        if (_builder.Length > 0)
+        {
+            _builder.Append(" AND ");
+        }
+        _builder.Append(condition);
+        return this;
+    }
+
+    public string Build()
+    {
+        if (_builder.Length == 0)
+        {
+            return string.Empty;
+        }
+
+        return $"WHERE {_builder}";
+    }
+}