add "chain of responsibility" pattern

.gitignore

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+*.suo
+*.manifest
+*.user
+*.pidb
+*.DS_Store
+TestResults
+Debug/
+Release/
+obj/
+bin/
+Bin/
+ClientBin/
+clientbin/

Behavioral/ChainOfResponsibility/ChainOfResponsibility.csproj

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+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">x86</Platform>
+    <ProductVersion>8.0.30703</ProductVersion>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{A291BF92-4BE9-42DB-9414-8E09F04FD3F0}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <RootNamespace>ChainOfResponsibility</RootNamespace>
+    <AssemblyName>ChainOfResponsibility</AssemblyName>
+    <TargetFrameworkVersion>v4.0</TargetFrameworkVersion>
+    <TargetFrameworkProfile>Client</TargetFrameworkProfile>
+    <FileAlignment>512</FileAlignment>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|x86' ">
+    <PlatformTarget>x86</PlatformTarget>
+    <DebugSymbols>true</DebugSymbols>
+    <DebugType>full</DebugType>
+    <Optimize>false</Optimize>
+    <OutputPath>bin\Debug\</OutputPath>
+    <DefineConstants>DEBUG;TRACE</DefineConstants>
+    <ErrorReport>prompt</ErrorReport>
+    <WarningLevel>4</WarningLevel>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|x86' ">
+    <PlatformTarget>x86</PlatformTarget>
+    <DebugType>pdbonly</DebugType>
+    <Optimize>true</Optimize>
+    <OutputPath>bin\Release\</OutputPath>
+    <DefineConstants>TRACE</DefineConstants>
+    <ErrorReport>prompt</ErrorReport>
+    <WarningLevel>4</WarningLevel>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Debug|AnyCPU'">
+    <DebugSymbols>true</DebugSymbols>
+    <OutputPath>bin\Debug\</OutputPath>
+    <DefineConstants>DEBUG;TRACE</DefineConstants>
+    <DebugType>full</DebugType>
+    <PlatformTarget>AnyCPU</PlatformTarget>
+    <CodeAnalysisLogFile>bin\Debug\ChainOfResponsibility.exe.CodeAnalysisLog.xml</CodeAnalysisLogFile>
+    <CodeAnalysisUseTypeNameInSuppression>true</CodeAnalysisUseTypeNameInSuppression>
+    <CodeAnalysisModuleSuppressionsFile>GlobalSuppressions.cs</CodeAnalysisModuleSuppressionsFile>
+    <ErrorReport>prompt</ErrorReport>
+    <CodeAnalysisRuleSet>MinimumRecommendedRules.ruleset</CodeAnalysisRuleSet>
+    <CodeAnalysisRuleSetDirectories>;D:\Program Files (x86)\Microsoft Visual Studio 10.0\Team Tools\Static Analysis Tools\\Rule Sets</CodeAnalysisRuleSetDirectories>
+    <CodeAnalysisIgnoreBuiltInRuleSets>true</CodeAnalysisIgnoreBuiltInRuleSets>
+    <CodeAnalysisRuleDirectories>;D:\Program Files (x86)\Microsoft Visual Studio 10.0\Team Tools\Static Analysis Tools\FxCop\\Rules</CodeAnalysisRuleDirectories>
+    <CodeAnalysisIgnoreBuiltInRules>true</CodeAnalysisIgnoreBuiltInRules>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Release|AnyCPU'">
+    <OutputPath>bin\Release\</OutputPath>
+    <DefineConstants>TRACE</DefineConstants>
+    <Optimize>true</Optimize>
+    <DebugType>pdbonly</DebugType>
+    <PlatformTarget>AnyCPU</PlatformTarget>
+    <CodeAnalysisLogFile>bin\Release\ChainOfResponsibility.exe.CodeAnalysisLog.xml</CodeAnalysisLogFile>
+    <CodeAnalysisUseTypeNameInSuppression>true</CodeAnalysisUseTypeNameInSuppression>
+    <CodeAnalysisModuleSuppressionsFile>GlobalSuppressions.cs</CodeAnalysisModuleSuppressionsFile>
+    <ErrorReport>prompt</ErrorReport>
+    <CodeAnalysisRuleSet>MinimumRecommendedRules.ruleset</CodeAnalysisRuleSet>
+    <CodeAnalysisRuleSetDirectories>;D:\Program Files (x86)\Microsoft Visual Studio 10.0\Team Tools\Static Analysis Tools\\Rule Sets</CodeAnalysisRuleSetDirectories>
+    <CodeAnalysisIgnoreBuiltInRuleSets>true</CodeAnalysisIgnoreBuiltInRuleSets>
+    <CodeAnalysisRuleDirectories>;D:\Program Files (x86)\Microsoft Visual Studio 10.0\Team Tools\Static Analysis Tools\FxCop\\Rules</CodeAnalysisRuleDirectories>
+    <CodeAnalysisIgnoreBuiltInRules>true</CodeAnalysisIgnoreBuiltInRules>
+  </PropertyGroup>
+  <ItemGroup>
+    <Reference Include="System" />
+    <Reference Include="System.Core" />
+    <Reference Include="System.Xml.Linq" />
+    <Reference Include="System.Data.DataSetExtensions" />
+    <Reference Include="Microsoft.CSharp" />
+    <Reference Include="System.Data" />
+    <Reference Include="System.Xml" />
+  </ItemGroup>
+  <ItemGroup>
+    <Compile Include="ConcreteHandler1.cs" />
+    <Compile Include="ConcreteHandler2.cs" />
+    <Compile Include="Handler.cs" />
+    <Compile Include="Client.cs" />
+    <Compile Include="Properties\AssemblyInfo.cs" />
+    <Compile Include="Request.cs" />
+  </ItemGroup>
+  <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
+  <!-- To modify your build process, add your task inside one of the targets below and uncomment it. 
+       Other similar extension points exist, see Microsoft.Common.targets.
+  <Target Name="BeforeBuild">
+  </Target>
+  <Target Name="AfterBuild">
+  </Target>
+  -->
+</Project>

Behavioral/ChainOfResponsibility/Client.cs

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+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+
+namespace ChainOfResponsibility {
+
+	class Client {
+
+		static void Main(string[] args) {
+			Handler handlerChain = new ConcreteHandler1(new ConcreteHandler2(null));
+
+			Request request1 = new ConcreteRequest1();
+			handlerChain.HandleRequest(request1);
+
+			Request request2 = new ConcreteRequest2();
+			handlerChain.HandleRequest(request2);
+
+			Console.ReadKey();
+		}
+	}
+
+}

Behavioral/ChainOfResponsibility/ConcreteHandler1.cs

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+using System;
+
+namespace ChainOfResponsibility {
+
+	public class ConcreteHandler1 : Handler {
+
+		public ConcreteHandler1(Handler successor) : base(successor) {
+		}
+
+		public override void HandleRequest(Request request) {
+			if (request is ConcreteRequest1) {
+				Console.WriteLine("ConcreteRequest1 is handled by ConcreteHandler1");
+			}
+			else {
+				this.Successor.HandleRequest(request);
+			}
+		}
+	}
+}

Behavioral/ChainOfResponsibility/ConcreteHandler2.cs

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+using System;
+
+namespace ChainOfResponsibility {
+
+	public class ConcreteHandler2 : Handler {
+
+		public ConcreteHandler2(Handler successor) : base(successor) {
+		}
+
+		public override void HandleRequest(Request request) {
+			if (request is ConcreteRequest2) {
+				Console.WriteLine("ConcreteRequest2 is handled by ConcreteHandler2");
+			}
+			else {
+				this.Successor.HandleRequest(request);
+			}
+		}
+	}
+}

Behavioral/ChainOfResponsibility/Handler.cs

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+namespace ChainOfResponsibility {
+
+	public abstract class Handler {
+
+		private readonly Handler _successor;
+
+		protected Handler(Handler successor) {
+			this._successor = successor;
+		}
+
+		protected Handler Successor {
+			get {
+				return this._successor;
+			}
+		}
+
+		public abstract void HandleRequest(Request request);
+
+	}
+}

Behavioral/ChainOfResponsibility/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: AssemblyTitle("ChainOfResponsibility")]
+[assembly: AssemblyDescription("")]
+[assembly: AssemblyConfiguration("")]
+[assembly: AssemblyCompany("")]
+[assembly: AssemblyProduct("ChainOfResponsibility")]
+[assembly: AssemblyCopyright("Copyright ©  2012")]
+[assembly: AssemblyTrademark("")]
+[assembly: AssemblyCulture("")]
+
+// 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("9e6bee19-8a0a-4b35-9b34-29556b0be99a")]
+
+// Version information for an assembly consists of the following four values:
+//
+//      Major Version
+//      Minor Version 
+//      Build Number
+//      Revision
+//
+// You can specify all the values or you can default the Build and Revision Numbers 
+// by using the '*' as shown below:
+// [assembly: AssemblyVersion("1.0.*")]
+[assembly: AssemblyVersion("1.0.0.0")]
+[assembly: AssemblyFileVersion("1.0.0.0")]

Behavioral/ChainOfResponsibility/Request.cs

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+namespace ChainOfResponsibility {
+
+	public abstract class Request {
+	}
+
+	public class ConcreteRequest1 : Request {
+	}
+
+	public class ConcreteRequest2 : Request {
+	}
+}

DesignPatterns.sln

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+
+Microsoft Visual Studio Solution File, Format Version 11.00
+# Visual Studio 2010
+Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "Behavioral", "Behavioral", "{B3C3F0E2-50B6-450B-A161-F4500F4E681D}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "ChainOfResponsibility", "Behavioral\ChainOfResponsibility\ChainOfResponsibility.csproj", "{A291BF92-4BE9-42DB-9414-8E09F04FD3F0}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{A291BF92-4BE9-42DB-9414-8E09F04FD3F0}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{A291BF92-4BE9-42DB-9414-8E09F04FD3F0}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{A291BF92-4BE9-42DB-9414-8E09F04FD3F0}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{A291BF92-4BE9-42DB-9414-8E09F04FD3F0}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(NestedProjects) = preSolution
+		{A291BF92-4BE9-42DB-9414-8E09F04FD3F0} = {B3C3F0E2-50B6-450B-A161-F4500F4E681D}
+	EndGlobalSection
+EndGlobal

README

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+CSharp Design Patterns