Initial commit

2026-07-12 16:06:18 +04:00
commit 1d16eeacb2
23 changed files with 2298 additions and 0 deletions
@@ -0,0 +1,50 @@
+using System;
+using System.Collections.Generic;
+using System.Data.OleDb;
+using System.Text;
+using System.Windows.Forms;
+
+namespace Database
+{
+    class Plants : OleDBDataGridViewHandler
+    {
+        static OleDbCommand SelectCommand() {
+            string command =
+                "SELECT [F].[id], [PT].[data] AS [type], [L].[data] AS [location], [F].[number]" +
+                "FROM[plants] AS[F], [plant_types] AS[PT], [locations] AS[L]" +
+                "WHERE[type_id] = [PT].[id] AND[location_id] = [L].[id]";
+            var result = new OleDbCommand(command, OleDBHandler.Connection);
+            return result;
+        }
+        public Plants(DataGridView dataGridView) : base(SelectCommand(), "plants", dataGridView) { }
+        private bool Exists(int typeId, int locationId) {
+            string command = "SELECT COUNT(*) FROM [plants]" +
+                $"WHERE [type_id] = {typeId} AND [location_id] = {locationId};";
+            var result = OleDBHandler.Execute(command, OleDBHandler.ExecuteType.Scalar);
+            if (Convert.ToInt32(result) > 0)
+                return true;
+            return false;
+        }
+        public void Insert(int number, int typeId, int locationId) {
+            if (Exists(typeId, locationId) == true)
+                return;
+            (string, object) pair1 = ("type_id", typeId);
+            (string, object) pair2 = ("location_id", locationId);
+            (string, object) pair3 = ("number", number);
+            OleDBHandler.Insert(nameTable, pair1, pair2, pair3);
+            RefreshView();
+        }
+        public void Update(int number, int typeId, int locationId) {
+            if (Exists(typeId, locationId) == true)
+                return;
+            int id = CurrentId();
+            if (id < 0)
+                return;
+            (string, object) pair1 = ("type_id", typeId);
+            (string, object) pair2 = ("location_id", locationId);
+            (string, object) pair3 = ("number", number);
+            OleDBHandler.Update(nameTable, id, pair1, pair2, pair3);
+            RefreshView();
+        }
+    }
+}