Исправлено все

ProjectLibrary/Entites/Orders.cs

@@ -20,9 +20,12 @@ namespace ProjectLibrary.Entites
         [DisplayName("Дата зврата книги")]
         public DateTime ReturnDate { get; private set; }
 
-        [DisplayName("Идентификационный номер читателя")]
+        [Browsable(false)]
         public int ReaderID { get; private set; }
 
+        [DisplayName("ФИО читателя")]
+        public string ReaderName { get; private set; }
+
         public string BookName {  get; set; }
 
         [Browsable(false)]

ProjectLibrary/Entites/Ticket_Extension.cs

@@ -6,15 +6,20 @@ namespace ProjectLibrary.Entites
     {
         public int Id { get; private set; }
 
-        [DisplayName("Идентификационный номер читателя")]
+        [Browsable(false)]
         public int ReaderID { get; private set; }
 
+        [DisplayName("ФИО читателя")]
+        public string ReaderName { get; private set; }
+
         [DisplayName("Последняя дата обновления")]
         public DateTime LastUpdateDate { get; private set; }
 
         [DisplayName("Следущая дата обновления")]
         public DateTime NextUpdateDate { get; private set; }
 
+      
+
         public static TicketExtensions CreateEntity(int id, int readerID, DateTime lastUpdateDate, DateTime nextUpdateDate)
         {
             return new TicketExtensions

ProjectLibrary/Forms/FTiclet_Extensions.cs

@@ -62,9 +62,11 @@ namespace ProjectLibrary.Forms
         private void LoadList()
         {
             dataGridView.DataSource = _ticketRepository.ReadTicketExtensions();
+            
             dataGridView.Columns["Id"].Visible = false;
             dataGridView.Columns["LastUpdateDate"].DefaultCellStyle.Format = "dd MMMM yyyy";
             dataGridView.Columns["NextUpdateDate"].DefaultCellStyle.Format = "dd MMMM yyyy";
+            
         }
         private bool TryGetIdentifierFromSelectedRow(out int id)
         {

ProjectLibrary/Reports/ChartReport.cs

@@ -24,7 +24,7 @@ public class ChartReport
         {
             new PdfBuilder(filePath)
             .AddHeader("Количество книг в библиотеках")
-            .AddPieChart("Библиотеки", GetData(dateTime))
+            .AddPieChart($"Библиотеки на {dateTime: dd MMMM yyyy}", GetData(dateTime))
             .Build();
             return true;
         }

ProjectLibrary/Repositores/Implementations/OrderRepository.cs

@@ -123,12 +123,14 @@ namespace ProjectLibrary.Repositories.Implementations
                 {
                     builder.AddCollerction("ord.ReturnDate < @EndDate");
                 }*/
-                var querySelect = $@"SELECT ord.*, bk.Name as BookName,
+                var querySelect = $@"SELECT ord.*,re.name as ReaderName,
+                                    bk.Name as BookName,
                                     Obo.bookid as bookid,
                                     Obo.Orderid, obo.count 
                                     FROM Orders ord
                                     INNER JOIN Book_Orders Obo ON Obo.orderId = ord.Id
                                     Inner join book bk on bk.ID = obo.Bookid
+                                    inner join reader re on re.id = ord.readerid
                                     {builder.Build()}";
                 var OrderBookDict = new Dictionary<int, List<Book_Orders>>();
 
@@ -141,6 +143,7 @@ namespace ProjectLibrary.Repositories.Implementations
                             OrderBookDict.Add(orders.Id, Book_Orders);
                         }
                         books_orders.BookName = orders.BookName;
+                        
                         Book_Orders.Add(books_orders);
                         return orders;
                     },

ProjectLibrary/Repositores/Implementations/TicketExtensionsRepository.cs

@@ -112,7 +112,9 @@ namespace ProjectLibrary.Repositories.Implementations
             try
             {
                 using var connection = new NpgsqlConnection(_connectionString.ConnectionString);
-                var querySelect = "SELECT * FROM Ticket_Extensions";
+                var querySelect = @"SELECT te.*, r.Name as ReaderName
+                                    FROM Ticket_Extensions te
+                                    INNER JOIN Reader r ON r.Id = te.ReaderId";
                 var ticketExtensions = connection.Query<TicketExtensions>(querySelect).ToList();
 
                 _logger.LogDebug("Полученные продления билетов: {json}", JsonConvert.SerializeObject(ticketExtensions));