Singleton sample code

DesignPattern/Singleton/Singleton.cs

@@ -0,0 +1,23 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Singleton
+{
+	public sealed class Singleton
+	{
+		public static Singleton Instance { get; } = new Singleton();
+
+		private Singleton()
+		{
+
+		}
+
+		public void Method()
+		{
+			Console.WriteLine("...");
+		}
+	}
+}

DesignPattern/Singleton/Singleton.csproj

@@ -50,6 +50,7 @@
     <Compile Include="Configuration.cs" />
     <Compile Include="Program.cs" />
     <Compile Include="Properties\AssemblyInfo.cs" />
+    <Compile Include="Singleton.cs" />
   </ItemGroup>
   <ItemGroup>
     <None Include="App.config" />