Add project files.

FactoryPattern/Samples/Vehicles.cs

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+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace FactoryPattern.Samples
+{
+    public interface IVehicle
+    {
+        string VehicleType { get; set; }
+
+        string Start();
+    }
+
+    public class Car : IVehicle
+    {
+        public string VehicleType { get; set; } = "Car";
+
+        public string Start()
+        {
+            return "The Car has been Started.";
+        }
+    }
+
+    public class Van : IVehicle
+    {
+        public string VehicleType { get; set; } = "Van";
+
+        public string Start()
+        {
+            return "The Van has been Started.";
+        }
+    }
+
+    public class Truck : IVehicle
+    {
+        public string VehicleType { get; set; } = "Truck";
+
+        public string Start()
+        {
+            return "The Truck has been Started.";
+        }
+    }
+
+}