diff --git a/csharp/.gitignore b/csharp/.gitignore
deleted file mode 100644
index c99ff6ab..00000000
--- a/csharp/.gitignore
+++ /dev/null
@@ -1,299 +0,0 @@
-## Ignore Visual Studio temporary files, build results, and
-## files generated by popular Visual Studio add-ons.
-##
-## Get latest from https://github.com/github/gitignore/blob/master/VisualStudio.gitignore
-
-# User-specific files
-*.suo
-*.user
-*.userosscache
-*.sln.docstates
-
-# User-specific files (MonoDevelop/Xamarin Studio)
-*.userprefs
-
-# Build results
-[Dd]ebug/
-[Dd]ebugPublic/
-[Rr]elease/
-[Rr]eleases/
-x64/
-x86/
-bld/
-[Bb]in/
-[Oo]bj/
-[Ll]og/
-
-# Visual Studio 2015 cache/options directory
-.vs/
-# Uncomment if you have tasks that create the project's static files in wwwroot
-#wwwroot/
-
-# MSTest test Results
-[Tt]est[Rr]esult*/
-[Bb]uild[Ll]og.*
-
-# NUNIT
-*.VisualState.xml
-TestResult.xml
-
-# Build Results of an ATL Project
-[Dd]ebugPS/
-[Rr]eleasePS/
-dlldata.c
-
-# Benchmark Results
-BenchmarkDotNet.Artifacts/
-
-# .NET Core
-project.lock.json
-project.fragment.lock.json
-artifacts/
-**/Properties/launchSettings.json
-
-*_i.c
-*_p.c
-*_i.h
-*.ilk
-*.meta
-*.obj
-*.pch
-*.pdb
-*.pgc
-*.pgd
-*.rsp
-*.sbr
-*.tlb
-*.tli
-*.tlh
-*.tmp
-*.tmp_proj
-*.log
-*.vspscc
-*.vssscc
-.builds
-*.pidb
-*.svclog
-*.scc
-
-# Chutzpah Test files
-_Chutzpah*
-
-# Visual C++ cache files
-ipch/
-*.aps
-*.ncb
-*.opendb
-*.opensdf
-*.sdf
-*.cachefile
-*.VC.db
-*.VC.VC.opendb
-
-# Visual Studio profiler
-*.psess
-*.vsp
-*.vspx
-*.sap
-
-# TFS 2012 Local Workspace
-$tf/
-
-# Guidance Automation Toolkit
-*.gpState
-
-# ReSharper is a .NET coding add-in
-_ReSharper*/
-*.[Rr]e[Ss]harper
-*.DotSettings.user
-
-# JustCode is a .NET coding add-in
-.JustCode
-
-# TeamCity is a build add-in
-_TeamCity*
-
-# DotCover is a Code Coverage Tool
-*.dotCover
-
-# AxoCover is a Code Coverage Tool
-.axoCover/*
-!.axoCover/settings.json
-
-# Visual Studio code coverage results
-*.coverage
-*.coveragexml
-
-# NCrunch
-_NCrunch_*
-.*crunch*.local.xml
-nCrunchTemp_*
-
-# MightyMoose
-*.mm.*
-AutoTest.Net/
-
-# Web workbench (sass)
-.sass-cache/
-
-# Installshield output folder
-[Ee]xpress/
-
-# DocProject is a documentation generator add-in
-DocProject/buildhelp/
-DocProject/Help/*.HxT
-DocProject/Help/*.HxC
-DocProject/Help/*.hhc
-DocProject/Help/*.hhk
-DocProject/Help/*.hhp
-DocProject/Help/Html2
-DocProject/Help/html
-
-# Click-Once directory
-publish/
-
-# Publish Web Output
-*.[Pp]ublish.xml
-*.azurePubxml
-# Note: Comment the next line if you want to checkin your web deploy settings,
-# but database connection strings (with potential passwords) will be unencrypted
-*.pubxml
-*.publishproj
-
-# Microsoft Azure Web App publish settings. Comment the next line if you want to
-# checkin your Azure Web App publish settings, but sensitive information contained
-# in these scripts will be unencrypted
-PublishScripts/
-
-# NuGet Packages
-*.nupkg
-# The packages folder can be ignored because of Package Restore
-**/packages/*
-# except build/, which is used as an MSBuild target.
-!**/packages/build/
-# Uncomment if necessary however generally it will be regenerated when needed
-#!**/packages/repositories.config
-# NuGet v3's project.json files produces more ignorable files
-*.nuget.props
-*.nuget.targets
-
-# Microsoft Azure Build Output
-csx/
-*.build.csdef
-
-# Microsoft Azure Emulator
-ecf/
-rcf/
-
-# Windows Store app package directories and files
-AppPackages/
-BundleArtifacts/
-Package.StoreAssociation.xml
-_pkginfo.txt
-*.appx
-
-# Visual Studio cache files
-# files ending in .cache can be ignored
-*.[Cc]ache
-# but keep track of directories ending in .cache
-!*.[Cc]ache/
-
-# Others
-ClientBin/
-~$*
-*~
-*.dbmdl
-*.dbproj.schemaview
-*.jfm
-*.pfx
-*.publishsettings
-orleans.codegen.cs
-
-# Since there are multiple workflows, uncomment next line to ignore bower_components
-# (https://github.com/github/gitignore/pull/1529#issuecomment-104372622)
-#bower_components/
-
-# RIA/Silverlight projects
-Generated_Code/
-
-# Backup & report files from converting an old project file
-# to a newer Visual Studio version. Backup files are not needed,
-# because we have git ;-)
-_UpgradeReport_Files/
-Backup*/
-UpgradeLog*.XML
-UpgradeLog*.htm
-
-# SQL Server files
-*.mdf
-*.ldf
-*.ndf
-
-# Business Intelligence projects
-*.rdl.data
-*.bim.layout
-*.bim_*.settings
-
-# Microsoft Fakes
-FakesAssemblies/
-
-# GhostDoc plugin setting file
-*.GhostDoc.xml
-
-# Node.js Tools for Visual Studio
-.ntvs_analysis.dat
-node_modules/
-
-# Typescript v1 declaration files
-typings/
-
-# Visual Studio 6 build log
-*.plg
-
-# Visual Studio 6 workspace options file
-*.opt
-
-# Visual Studio 6 auto-generated workspace file (contains which files were open etc.)
-*.vbw
-
-# Visual Studio LightSwitch build output
-**/*.HTMLClient/GeneratedArtifacts
-**/*.DesktopClient/GeneratedArtifacts
-**/*.DesktopClient/ModelManifest.xml
-**/*.Server/GeneratedArtifacts
-**/*.Server/ModelManifest.xml
-_Pvt_Extensions
-
-# Paket dependency manager
-.paket/paket.exe
-paket-files/
-
-# FAKE - F# Make
-.fake/
-
-# JetBrains Rider
-.idea/
-*.sln.iml
-
-# CodeRush
-.cr/
-
-# Python Tools for Visual Studio (PTVS)
-__pycache__/
-*.pyc
-
-# Cake - Uncomment if you are using it
-# tools/**
-# !tools/packages.config
-
-# Tabs Studio
-*.tss
-
-# Telerik's JustMock configuration file
-*.jmconfig
-
-# BizTalk build output
-*.btp.cs
-*.btm.cs
-*.odx.cs
-*.xsd.cs
\ No newline at end of file
diff --git a/csharp/App.config b/csharp/App.config
deleted file mode 100644
index 88fa4027..00000000
--- a/csharp/App.config
+++ /dev/null
@@ -1,6 +0,0 @@
-<?xml version="1.0" encoding="utf-8" ?>
-<configuration>
-    <startup> 
-        <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.5.2" />
-    </startup>
-</configuration>
\ No newline at end of file
diff --git a/csharp/ApprovalTest.cs b/csharp/ApprovalTest.cs
deleted file mode 100644
index 5334147e..00000000
--- a/csharp/ApprovalTest.cs
+++ /dev/null
@@ -1,28 +0,0 @@
-using System;
-using System.IO;
-using System.Text;
-using ApprovalTests;
-using ApprovalTests.Reporters;
-using NUnit.Framework;
-
-namespace csharp
-{
-    [UseReporter(typeof(DiffReporter))]
-    [TestFixture]
-    public class ApprovalTest
-    {
-        [Test]
-        public void ThirtyDays()
-        {
-            
-            StringBuilder fakeoutput = new StringBuilder();
-            Console.SetOut(new StringWriter(fakeoutput));
-            Console.SetIn(new StringReader("a\n"));
-
-            Program.Main(new string[] { });
-            var output = fakeoutput.ToString();
-
-            Approvals.Verify(output);
-        }
-    }
-}
diff --git a/csharp/GildedRose.cs b/csharp/GildedRose.cs
deleted file mode 100644
index c60d97a0..00000000
--- a/csharp/GildedRose.cs
+++ /dev/null
@@ -1,89 +0,0 @@
-using System.Collections.Generic;
-
-namespace csharp
-{
-    public class GildedRose
-    {
-        IList<Item> Items;
-        public GildedRose(IList<Item> Items)
-        {
-            this.Items = Items;
-        }
-
-        public void UpdateQuality()
-        {
-            for (var i = 0; i < Items.Count; i++)
-            {
-                if (Items[i].Name != "Aged Brie" && Items[i].Name != "Backstage passes to a TAFKAL80ETC concert")
-                {
-                    if (Items[i].Quality > 0)
-                    {
-                        if (Items[i].Name != "Sulfuras, Hand of Ragnaros")
-                        {
-                            Items[i].Quality = Items[i].Quality - 1;
-                        }
-                    }
-                }
-                else
-                {
-                    if (Items[i].Quality < 50)
-                    {
-                        Items[i].Quality = Items[i].Quality + 1;
-
-                        if (Items[i].Name == "Backstage passes to a TAFKAL80ETC concert")
-                        {
-                            if (Items[i].SellIn < 11)
-                            {
-                                if (Items[i].Quality < 50)
-                                {
-                                    Items[i].Quality = Items[i].Quality + 1;
-                                }
-                            }
-
-                            if (Items[i].SellIn < 6)
-                            {
-                                if (Items[i].Quality < 50)
-                                {
-                                    Items[i].Quality = Items[i].Quality + 1;
-                                }
-                            }
-                        }
-                    }
-                }
-
-                if (Items[i].Name != "Sulfuras, Hand of Ragnaros")
-                {
-                    Items[i].SellIn = Items[i].SellIn - 1;
-                }
-
-                if (Items[i].SellIn < 0)
-                {
-                    if (Items[i].Name != "Aged Brie")
-                    {
-                        if (Items[i].Name != "Backstage passes to a TAFKAL80ETC concert")
-                        {
-                            if (Items[i].Quality > 0)
-                            {
-                                if (Items[i].Name != "Sulfuras, Hand of Ragnaros")
-                                {
-                                    Items[i].Quality = Items[i].Quality - 1;
-                                }
-                            }
-                        }
-                        else
-                        {
-                            Items[i].Quality = Items[i].Quality - Items[i].Quality;
-                        }
-                    }
-                    else
-                    {
-                        if (Items[i].Quality < 50)
-                        {
-                            Items[i].Quality = Items[i].Quality + 1;
-                        }
-                    }
-                }
-            }
-        }
-    }
-}
diff --git a/csharp/GildedRoseTest.cs b/csharp/GildedRoseTest.cs
deleted file mode 100644
index 911df1be..00000000
--- a/csharp/GildedRoseTest.cs
+++ /dev/null
@@ -1,18 +0,0 @@
-using NUnit.Framework;
-using System.Collections.Generic;
-
-namespace csharp
-{
-    [TestFixture]
-    public class GildedRoseTest
-    {
-        [Test]
-        public void foo()
-        {
-            IList<Item> Items = new List<Item> { new Item { Name = "foo", SellIn = 0, Quality = 0 } };
-            GildedRose app = new GildedRose(Items);
-            app.UpdateQuality();
-            Assert.AreEqual("fixme", Items[0].Name);
-        }
-    }
-}
diff --git a/csharp/Item.cs b/csharp/Item.cs
deleted file mode 100644
index c0174285..00000000
--- a/csharp/Item.cs
+++ /dev/null
@@ -1,14 +0,0 @@
-namespace csharp
-{
-    public class Item
-    {
-        public string Name { get; set; }
-        public int SellIn { get; set; }
-        public int Quality { get; set; }
-
-        public override string ToString()
-        {
-            return this.Name + ", " + this.SellIn + ", " + this.Quality;
-        }  
-    }
-}
diff --git a/csharp/Program.cs b/csharp/Program.cs
deleted file mode 100644
index 36313e27..00000000
--- a/csharp/Program.cs
+++ /dev/null
@@ -1,56 +0,0 @@
-using System;
-using System.Collections.Generic;
-
-namespace csharp
-{
-    public class Program
-    {
-        public static void Main(string[] args)
-        {
-            Console.WriteLine("OMGHAI!");
-
-            IList<Item> Items = new List<Item>{
-                new Item {Name = "+5 Dexterity Vest", SellIn = 10, Quality = 20},
-                new Item {Name = "Aged Brie", SellIn = 2, Quality = 0},
-                new Item {Name = "Elixir of the Mongoose", SellIn = 5, Quality = 7},
-                new Item {Name = "Sulfuras, Hand of Ragnaros", SellIn = 0, Quality = 80},
-                new Item {Name = "Sulfuras, Hand of Ragnaros", SellIn = -1, Quality = 80},
-                new Item
-                {
-                    Name = "Backstage passes to a TAFKAL80ETC concert",
-                    SellIn = 15,
-                    Quality = 20
-                },
-                new Item
-                {
-                    Name = "Backstage passes to a TAFKAL80ETC concert",
-                    SellIn = 10,
-                    Quality = 49
-                },
-                new Item
-                {
-                    Name = "Backstage passes to a TAFKAL80ETC concert",
-                    SellIn = 5,
-                    Quality = 49
-                },
-				// this conjured item does not work properly yet
-				new Item {Name = "Conjured Mana Cake", SellIn = 3, Quality = 6}
-            };
-
-            var app = new GildedRose(Items);
-
-
-            for (var i = 0; i < 31; i++)
-            {
-                Console.WriteLine("-------- day " + i + " --------");
-                Console.WriteLine("name, sellIn, quality");
-                for (var j = 0; j < Items.Count; j++)
-                {
-                    System.Console.WriteLine(Items[j]);
-                }
-                Console.WriteLine("");
-                app.UpdateQuality();
-            }
-        }
-    }
-}
diff --git a/csharp/Properties/AssemblyInfo.cs b/csharp/Properties/AssemblyInfo.cs
deleted file mode 100644
index dc5db47d..00000000
--- a/csharp/Properties/AssemblyInfo.cs
+++ /dev/null
@@ -1,36 +0,0 @@
-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("csharp")]
-[assembly: AssemblyDescription("")]
-[assembly: AssemblyConfiguration("")]
-[assembly: AssemblyCompany("")]
-[assembly: AssemblyProduct("csharp")]
-[assembly: AssemblyCopyright("Copyright ©  2017")]
-[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("176c0214-9136-4079-8dab-11d7420c3881")]
-
-// 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")]
diff --git a/csharp/csharp.csproj b/csharp/csharp.csproj
deleted file mode 100644
index 58213647..00000000
--- a/csharp/csharp.csproj
+++ /dev/null
@@ -1,92 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
-  <Import Project="packages\NUnit3TestAdapter.3.9.0\build\net35\NUnit3TestAdapter.props" Condition="Exists('packages\NUnit3TestAdapter.3.9.0\build\net35\NUnit3TestAdapter.props')" />
-  <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
-  <PropertyGroup>
-    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
-    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
-    <ProjectGuid>{176C0214-9136-4079-8DAB-11D7420C3881}</ProjectGuid>
-    <OutputType>Exe</OutputType>
-    <AppDesignerFolder>Properties</AppDesignerFolder>
-    <RootNamespace>csharp</RootNamespace>
-    <AssemblyName>csharp</AssemblyName>
-    <TargetFrameworkVersion>v4.5.2</TargetFrameworkVersion>
-    <FileAlignment>512</FileAlignment>
-    <AutoGenerateBindingRedirects>true</AutoGenerateBindingRedirects>
-    <NuGetPackageImportStamp>
-    </NuGetPackageImportStamp>
-  </PropertyGroup>
-  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
-    <PlatformTarget>AnyCPU</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|AnyCPU' ">
-    <PlatformTarget>AnyCPU</PlatformTarget>
-    <DebugType>pdbonly</DebugType>
-    <Optimize>true</Optimize>
-    <OutputPath>bin\Release\</OutputPath>
-    <DefineConstants>TRACE</DefineConstants>
-    <ErrorReport>prompt</ErrorReport>
-    <WarningLevel>4</WarningLevel>
-  </PropertyGroup>
-  <ItemGroup>
-    <Reference Include="ApprovalTests, Version=3.0.0.0, Culture=neutral, PublicKeyToken=11bd7d124fc62e0f, processorArchitecture=MSIL">
-      <HintPath>packages\ApprovalTests.3.0.13\lib\net40\ApprovalTests.dll</HintPath>
-      <Private>True</Private>
-    </Reference>
-    <Reference Include="ApprovalUtilities, Version=3.0.0.0, Culture=neutral, PublicKeyToken=11bd7d124fc62e0f, processorArchitecture=MSIL">
-      <HintPath>packages\ApprovalUtilities.3.0.13\lib\net45\ApprovalUtilities.dll</HintPath>
-      <Private>True</Private>
-    </Reference>
-    <Reference Include="ApprovalUtilities.Net45, Version=3.0.0.0, Culture=neutral, processorArchitecture=MSIL">
-      <HintPath>packages\ApprovalUtilities.3.0.13\lib\net45\ApprovalUtilities.Net45.dll</HintPath>
-      <Private>True</Private>
-    </Reference>
-    <Reference Include="nunit.framework, Version=3.9.0.0, Culture=neutral, PublicKeyToken=2638cd05610744eb, processorArchitecture=MSIL">
-      <HintPath>packages\NUnit.3.9.0\lib\net45\nunit.framework.dll</HintPath>
-    </Reference>
-    <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.Net.Http" />
-    <Reference Include="System.Xml" />
-  </ItemGroup>
-  <ItemGroup>
-    <Compile Include="ApprovalTest.cs" />
-    <Compile Include="GildedRose.cs" />
-    <Compile Include="GildedRoseTest.cs" />
-    <Compile Include="Item.cs" />
-    <Compile Include="Program.cs" />
-    <Compile Include="Properties\AssemblyInfo.cs" />
-  </ItemGroup>
-  <ItemGroup>
-    <None Include="App.config" />
-    <None Include="packages.config" />
-  </ItemGroup>
-  <ItemGroup>
-    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
-  </ItemGroup>
-  <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
-  <Target Name="EnsureNuGetPackageBuildImports" BeforeTargets="PrepareForBuild">
-    <PropertyGroup>
-      <ErrorText>This project references NuGet package(s) that are missing on this computer. Use NuGet Package Restore to download them.  For more information, see http://go.microsoft.com/fwlink/?LinkID=322105. The missing file is {0}.</ErrorText>
-    </PropertyGroup>
-    <Error Condition="!Exists('packages\NUnit3TestAdapter.3.9.0\build\net35\NUnit3TestAdapter.props')" Text="$([System.String]::Format('$(ErrorText)', 'packages\NUnit3TestAdapter.3.9.0\build\net35\NUnit3TestAdapter.props'))" />
-  </Target>
-  <!-- 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>
\ No newline at end of file
diff --git a/csharp/csharp.sln b/csharp/csharp.sln
deleted file mode 100644
index 62ff78a8..00000000
--- a/csharp/csharp.sln
+++ /dev/null
@@ -1,22 +0,0 @@
-
-Microsoft Visual Studio Solution File, Format Version 12.00
-# Visual Studio 14
-VisualStudioVersion = 14.0.25420.1
-MinimumVisualStudioVersion = 10.0.40219.1
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "csharp", "csharp.csproj", "{176C0214-9136-4079-8DAB-11D7420C3881}"
-EndProject
-Global
-	GlobalSection(SolutionConfigurationPlatforms) = preSolution
-		Debug|Any CPU = Debug|Any CPU
-		Release|Any CPU = Release|Any CPU
-	EndGlobalSection
-	GlobalSection(ProjectConfigurationPlatforms) = postSolution
-		{176C0214-9136-4079-8DAB-11D7420C3881}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
-		{176C0214-9136-4079-8DAB-11D7420C3881}.Debug|Any CPU.Build.0 = Debug|Any CPU
-		{176C0214-9136-4079-8DAB-11D7420C3881}.Release|Any CPU.ActiveCfg = Release|Any CPU
-		{176C0214-9136-4079-8DAB-11D7420C3881}.Release|Any CPU.Build.0 = Release|Any CPU
-	EndGlobalSection
-	GlobalSection(SolutionProperties) = preSolution
-		HideSolutionNode = FALSE
-	EndGlobalSection
-EndGlobal
diff --git a/csharp/packages.config b/csharp/packages.config
deleted file mode 100644
index 63895ed1..00000000
--- a/csharp/packages.config
+++ /dev/null
@@ -1,7 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<packages>
-  <package id="ApprovalTests" version="3.0.13" targetFramework="net452" />
-  <package id="ApprovalUtilities" version="3.0.13" targetFramework="net452" />
-  <package id="NUnit" version="3.9.0" targetFramework="net452" />
-  <package id="NUnit3TestAdapter" version="3.9.0" targetFramework="net452" />
-</packages>
\ No newline at end of file