enum unit finished and quantity class finished, and I'm working on Ingredient

MCTG/Model/Ingredient.cs

@@ -8,5 +8,39 @@ namespace Model
 {
     internal class Ingredient
     {
+        #region Attributes
+        /// <summary>
+        /// Name of the ingredient 
+        /// </summary>
+        private string name;
+        /// <summary>
+        /// get the quatity of ingredient
+        /// </summary>
+        private Quantity quantity;
+
+        #endregion
+
+        #region
+        public string Name
+        {
+            get => name;
+            set 
+            {
+            if (value == null)
+                {
+                    throw new ArgumentNullException("Impossible de ne pas avoir de nom pour l'ingrédient");
+                }
+            }
+        }
+
+        public Quantity QuantityP
+        {
+            get => quantity;
+            set => quantity = value;
+        }
+
+        #endregion
+
+
     }
 }

MCTG/Model/Quantity.cs

@@ -0,0 +1,12 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Model
+{
+    internal class Quantity
+    {
+    }
+}

MCTG/Model/Unit.cs

@@ -0,0 +1,11 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Model
+{
+     public enum Unit
+    { Unit, kG, mG, G, L, cL, mL };
+}