feat: team4 added select author and publisher

src/team4.cs

@@ -250,6 +250,76 @@ namespace Team4
                 throw;
             }
         }
+        public static List<Dictionary<int, string[]>> GetAuthorNameId(SqliteConnection conn)
+        {
+            try
+            {
+                using (var command = conn.CreateCommand())
+                {
+                    command.CommandText = @"
+                        SELECT author.ID, author.Name, author.Surname
+                        FROM Authors author";
+
+                    var authors = new List<Dictionary<int, string[]>>();
+
+                    using (var reader = command.ExecuteReader())
+                    {
+                        while (reader.Read())
+                        {
+                            int id = reader.GetInt32(0);
+                            string name = reader.IsDBNull(1) ? "" : reader.GetString(1);
+                            string surname = reader.IsDBNull(2) ? "" : reader.GetString(2);
+
+                            authors.Add(new Dictionary<int, string[]>
+                            {
+                                { id, new[] { name, surname } }
+                            });
+                        }
+                    }
+                    return authors;
+                }
+            }
+            catch (Exception ex)
+            {
+                Console.WriteLine($"Error in GetAuthorNameId: {ex.Message}");
+                throw;
+            }
+        }
+
+        public static List<Dictionary<int, string>> GetPublisherNameId(SqliteConnection conn)
+        {
+            try
+            {
+                using (var command = conn.CreateCommand())
+                {
+                    command.CommandText = @"
+                        SELECT publisher.ID, publisher.Name
+                        FROM Publisher publisher";
+
+                    var publishers = new List<Dictionary<int, string>>();
+
+                    using (var reader = command.ExecuteReader())
+                    {
+                        while (reader.Read())
+                        {
+                            int id = reader.GetInt32(0);
+                            string name = reader.IsDBNull(1) ? "" : reader.GetString(1);
+
+                            publishers.Add(new Dictionary<int, string>
+                            {
+                                { id, name }
+                            });
+                        }
+                    }
+                    return publishers;
+                }
+            }
+            catch (Exception ex)
+            {
+                Console.WriteLine($"Error in GetAuthorNameId: {ex.Message}");
+                throw;
+            }
+        }
 
         public static void GetBooksBy(SqliteConnection conn)
         {