build more

Administration.cs

@@ -2,9 +2,17 @@ namespace Bücherwurm
 {
     class Administration
     {
+        private Catalogue Books {get; set;}
+
+        private Inventory Inventory {get; set;}
+
+        private Lend_Administration Lendings {get; set;}
         
         public Administration()
         {
+            Books = new Catalogue();
+            Inventory = new Inventory();
+            Lendings = new Lend_Administration();
         }
     }
 }

Catalogue.cs

@@ -0,0 +1,19 @@
+using System.Collections.Generic;
+
+namespace Bücherwurm
+{
+    class Catalogue
+    {
+        private List<Book> Books {get; set;}
+
+        public Catalogue()
+        {
+            Books = new List<Book>();
+        }
+
+        public void Import(string JsonString)
+        {
+            //TODO: implement!
+        }
+    }
+}

Inventory.cs

@@ -0,0 +1,23 @@
+using System.Collections.Generic;
+
+namespace Bücherwurm
+{
+    class Inventory
+    {
+        private List<Item> InventoryList {get; set;}
+
+        public Inventory(){
+            InventoryList = new List<Item>();
+        }
+
+        public void Add(Book Book)
+        {
+            //TODO: implement!
+        }
+
+        public void Remove(int Id)
+        {
+            //TODO: implement!
+        }
+    }
+}

Lend_Administration.cs

@@ -0,0 +1,24 @@
+using System.Collections.Generic;
+
+namespace Bücherwurm
+{
+    class Lend_Administration
+    {
+        private List<Lending> Lendings {get; set;}
+
+        public Lend_Administration()
+        {
+            Lendings = new List<Lending>();
+        }
+
+        public void Lend(int[] ItemsIds, string Customer)
+        {
+            //TODO: implement!
+        }
+
+        public void Return(int LendID)
+        {
+            //TODO: implement!
+        }
+    }
+}