Add strategy pattern basic example

src/StrategyPattern/Properties/AssemblyInfo.cs

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+using System.Reflection;
+using System.Runtime.CompilerServices;
+using System.Runtime.InteropServices;
+
+// General Information about an assembly is controlled through the following
+// set of attributes. Change these attribute values to modify the information
+// associated with an assembly.
+[assembly: AssemblyConfiguration("")]
+[assembly: AssemblyCompany("HP")]
+[assembly: AssemblyProduct("StrategyPattern")]
+[assembly: AssemblyTrademark("")]
+
+// Setting ComVisible to false makes the types in this assembly not visible
+// to COM components.  If you need to access a type in this assembly from
+// COM, set the ComVisible attribute to true on that type.
+[assembly: ComVisible(false)]
+
+// The following GUID is for the ID of the typelib if this project is exposed to COM
+[assembly: Guid("01b9d869-af89-4919-8445-79206848fb5f")]

src/StrategyPattern/ShippingCalculator/ShippingMotivatingExample.cs

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+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading.Tasks;
+
+namespace StrategyPattern.ShippingCalculator
+{
+    public class ShippingMotivatingExample
+    {
+        public static void Run()
+        {
+            MShippingCalculator shippingCostCaluclator = new MShippingCalculator();
+            var indiaPrice = shippingCostCaluclator.GetPrice(new MOrder(), MShippingService.IndiaPost);
+            var postaPrice = shippingCostCaluclator.GetPrice(new MOrder(), MShippingService.Posta);
+            var tcePrice = shippingCostCaluclator.GetPrice(new MOrder(), MShippingService.TCE);
+
+            Console.WriteLine("The shipping cost for india is:{0}, for posta is {1} for tce is {2}", indiaPrice, postaPrice, tcePrice);
+        }
+    }
+
+    public class MShippingCalculator
+    {
+        public double GetPrice(MOrder order, MShippingService shippingService)
+        {
+            switch (shippingService)
+            {
+                case MShippingService.Posta:
+                    return ComputeForPosta(order, shippingService);
+                case MShippingService.TCE:
+                    return ComputeForTCE(order, shippingService);
+                case MShippingService.IndiaPost:
+                    return ComputeForIndiaPost(order, shippingService);
+                default:
+                    throw new Exception("Me not know the shipping service, boom boom");
+            }
+        }
+
+        private double ComputeForIndiaPost(MOrder order, MShippingService shippingService)
+        {
+            return 0.25;
+        }
+
+        private double ComputeForTCE(MOrder order, MShippingService shippingService)
+        {
+            return 1;
+        }
+
+        private double ComputeForPosta(MOrder order, MShippingService shippingService)
+        {
+            return 2;
+        }
+    }
+
+    public class MOrder
+    {
+
+    }
+
+    public enum MShippingService
+    {
+        Posta,
+        TCE,
+        IndiaPost
+    }
+}

src/StrategyPattern/ShippingCalculator/ShippingWithStrategyExample.cs

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+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading.Tasks;
+
+namespace StrategyPattern.ShippingCalculator
+{
+    public class ShippingWithStrategyExample
+    {
+        public static void Run()
+        {
+            ShippingCalculator shippingCostCaluclator = new ShippingCalculator();
+            var indiaPrice = shippingCostCaluclator.GetPrice(new Order(), new IndiaPost());
+            var postaPrice = shippingCostCaluclator.GetPrice(new Order(), new Posta());
+            var tcePrice = shippingCostCaluclator.GetPrice(new Order(), new TCE());
+
+            Console.WriteLine("The shipping cost for india is:{0}, for posta is {1} for tce is {2}", indiaPrice, postaPrice, tcePrice);
+        }
+    }
+
+    public class ShippingCalculator
+    {
+        public double GetPrice(Order order, ShippingService shippingService)
+        {
+            return shippingService.GetPrice(order);
+        }
+    }
+
+    public abstract class ShippingService
+    {
+        public abstract double GetPrice(Order o);
+    }
+
+    public class IndiaPost : ShippingService
+    {
+        public override double GetPrice(Order o)
+        {
+            return 0.25;
+        }
+    }
+
+    public class Posta : ShippingService
+    {
+        public override double GetPrice(Order o)
+        {
+            return 2;
+        }
+    }
+
+    public class TCE : ShippingService
+    {
+        public override double GetPrice(Order o)
+        {
+            return 1;
+        }
+    }
+
+    public class Order
+    {
+    }
+}

src/StrategyPattern/StrategyPattern.xproj

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+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <PropertyGroup>
+    <VisualStudioVersion Condition="'$(VisualStudioVersion)' == ''">14.0</VisualStudioVersion>
+    <VSToolsPath Condition="'$(VSToolsPath)' == ''">$(MSBuildExtensionsPath32)\Microsoft\VisualStudio\v$(VisualStudioVersion)</VSToolsPath>
+  </PropertyGroup>
+
+  <Import Project="$(VSToolsPath)\DotNet\Microsoft.DotNet.Props" Condition="'$(VSToolsPath)' != ''" />
+  <PropertyGroup Label="Globals">
+    <ProjectGuid>01b9d869-af89-4919-8445-79206848fb5f</ProjectGuid>
+    <RootNamespace>StrategyPattern</RootNamespace>
+    <BaseIntermediateOutputPath Condition="'$(BaseIntermediateOutputPath)'=='' ">.\obj</BaseIntermediateOutputPath>
+    <OutputPath Condition="'$(OutputPath)'=='' ">.\bin\</OutputPath>
+    <TargetFrameworkVersion>v4.5.2</TargetFrameworkVersion>
+  </PropertyGroup>
+
+  <PropertyGroup>
+    <SchemaVersion>2.0</SchemaVersion>
+  </PropertyGroup>
+  <Import Project="$(VSToolsPath)\DotNet\Microsoft.DotNet.targets" Condition="'$(VSToolsPath)' != ''" />
+</Project>

src/StrategyPattern/StrategyPatternExamples.cs

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+using StrategyPattern.ShippingCalculator;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading.Tasks;
+
+namespace StrategyPattern
+{
+    public class StrategyPatternExamples
+    {
+        public static void Run()
+        {
+            ShippingMotivatingExample.Run();
+
+            ShippingWithStrategyExample.Run();
+        }
+    }
+}

src/StrategyPattern/project.json

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+{
+  "version": "1.0.0-*",
+
+  "dependencies": {
+    "NETStandard.Library": "1.6.0"
+  },
+
+  "frameworks": {
+    "netstandard1.6": {
+      "imports": "dnxcore50"
+    }
+  }
+}