diff --git a/csharp/App.config b/csharp/App.config
index 88fa4027..4bfa0056 100644
--- a/csharp/App.config
+++ b/csharp/App.config
@@ -1,6 +1,6 @@
-<?xml version="1.0" encoding="utf-8" ?>
+<?xml version="1.0" encoding="utf-8"?>
 <configuration>
     <startup> 
-        <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.5.2" />
+        <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.8"/>
     </startup>
-</configuration>
\ No newline at end of file
+</configuration>
diff --git a/csharp/GildedRose.cs b/csharp/GildedRose.cs
index c60d97a0..ac9c4192 100644
--- a/csharp/GildedRose.cs
+++ b/csharp/GildedRose.cs
@@ -1,5 +1,5 @@
 using System.Collections.Generic;
-
+using System;
 namespace csharp
 {
     public class GildedRose
@@ -9,79 +9,92 @@ namespace csharp
         {
             this.Items = Items;
         }
-
-        public void UpdateQuality()
+        void UpdateItem(ref Item item, int sellInValueFactor, int qualityValueFactor)
         {
-            for (var i = 0; i < Items.Count; i++)
+            item.SellIn += sellInValueFactor;
+            item.Quality = Math.Max(0, Math.Min(50, item.Quality + qualityValueFactor));
+
+        }
+        bool IsExpired(Item item)
+        {
+            bool output = true;
+            if (item.SellIn > 0)
+                output = false;
+            return output;
+        }
+        Item GetNewAgedBrie(Item item)
+        {
+            if (IsExpired(item))
+                UpdateItem(ref item, -1, 2);
+            else
+                UpdateItem(ref item, -1, 1);
+            return item;
+        }
+        Item GetNewBackstagesPasses(Item item)
+        {
+            if (IsExpired(item))
+                item.Quality = 0;
+            else
             {
-                if (Items[i].Name != "Aged Brie" && Items[i].Name != "Backstage passes to a TAFKAL80ETC concert")
+                if (item.SellIn <= 10 && item.SellIn > 5)
                 {
-                    if (Items[i].Quality > 0)
-                    {
-                        if (Items[i].Name != "Sulfuras, Hand of Ragnaros")
-                        {
-                            Items[i].Quality = Items[i].Quality - 1;
-                        }
-                    }
+                    UpdateItem(ref item, -1, 2);
+                }
+                else if (item.SellIn <= 5)
+                {
+                    UpdateItem(ref item, -1, 3);
                 }
                 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;
-                                }
-                            }
-                        }
-                    }
+                    UpdateItem(ref item, -1, 1);
                 }
-
-                if (Items[i].Name != "Sulfuras, Hand of Ragnaros")
+            }
+            return item;
+        }
+        Item GetNewConjured(Item item)
+        {
+            if (IsExpired(item))
+            {
+                UpdateItem(ref item, -1, -4);
+            }
+            else
+            {
+                UpdateItem(ref item, -1, -2);
+            }
+            return item;
+        }
+        Item GetNewDefault(Item item)
+        {
+            if (IsExpired(item))
+            {
+                UpdateItem(ref item, -1, -2);
+            }
+            else
+            {
+                UpdateItem(ref item, -1, -1);
+            }
+            return item;
+        }
+        public void UpdateQuality()
+        {
+            for (int itemIndex = 0; itemIndex < Items.Count; itemIndex++)
+            {
+                switch (Items[itemIndex].Name)
                 {
-                    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;
-                        }
-                    }
+                    case "Aged Brie":
+                        Items[itemIndex] = GetNewAgedBrie(Items[itemIndex]);
+                        break;
+                    case "Sulfuras, Hand of Ragnaros":
+                        break;
+                    case "Backstage passes to a TAFKAL80ETC concert":
+                        Items[itemIndex] = GetNewBackstagesPasses(Items[itemIndex]);
+                        break;
+                    case "Conjured Mana Cake":
+                        Items[itemIndex] = GetNewConjured(Items[itemIndex]);
+                        break;
+                    default:
+                        Items[itemIndex] = GetNewDefault(Items[itemIndex]);
+                        break;
                 }
             }
         }
diff --git a/csharp/csharp.csproj b/csharp/csharp.csproj
index 58213647..85e0f51b 100644
--- a/csharp/csharp.csproj
+++ b/csharp/csharp.csproj
@@ -10,11 +10,12 @@
     <AppDesignerFolder>Properties</AppDesignerFolder>
     <RootNamespace>csharp</RootNamespace>
     <AssemblyName>csharp</AssemblyName>
-    <TargetFrameworkVersion>v4.5.2</TargetFrameworkVersion>
+    <TargetFrameworkVersion>v4.8</TargetFrameworkVersion>
     <FileAlignment>512</FileAlignment>
     <AutoGenerateBindingRedirects>true</AutoGenerateBindingRedirects>
     <NuGetPackageImportStamp>
     </NuGetPackageImportStamp>
+    <TargetFrameworkProfile />
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
     <PlatformTarget>AnyCPU</PlatformTarget>