diff --git a/DesignPattern/Decorator/App.config b/DesignPattern/Decorator/App.config
new file mode 100644
index 0000000..193aecc
--- /dev/null
+++ b/DesignPattern/Decorator/App.config
@@ -0,0 +1,6 @@
+
+
+
+
+
+
\ No newline at end of file
diff --git a/DesignPattern/Decorator/Circle.cs b/DesignPattern/Decorator/Circle.cs
new file mode 100644
index 0000000..67443e3
--- /dev/null
+++ b/DesignPattern/Decorator/Circle.cs
@@ -0,0 +1,25 @@
+using System;
+using System.Collections.Generic;
+using System.Drawing;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Decorator
+{
+ class Circle : Shape
+ {
+ public Circle(Point origin, int radius)
+ {
+ X = origin.X;
+ Y = origin.Y;
+ Width = radius * 2;
+ Height = radius * 2;
+ }
+
+ public override void Draw(Graphics g)
+ {
+ g.DrawEllipse(Pens.Black, X, Y, Width, Height);
+ }
+ }
+}
diff --git a/DesignPattern/Decorator/Client.cs b/DesignPattern/Decorator/Client.cs
new file mode 100644
index 0000000..9f9a764
--- /dev/null
+++ b/DesignPattern/Decorator/Client.cs
@@ -0,0 +1,25 @@
+using System;
+using System.Collections.Generic;
+using System.Drawing;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows.Forms;
+
+namespace Decorator
+{
+ class Client
+ {
+ public static void HowToTest()
+ {
+ Form form = new Form();
+ form.Show();
+
+ Graphics gr = form.CreateGraphics();
+
+ Shape shape = new Circle(new Point(100, 100), 50);
+ FillShapeDecorator deco = new FillShapeDecorator(shape);
+ deco.Draw(gr);
+ }
+ }
+}
diff --git a/DesignPattern/Decorator/Decorator.csproj b/DesignPattern/Decorator/Decorator.csproj
new file mode 100644
index 0000000..260b607
--- /dev/null
+++ b/DesignPattern/Decorator/Decorator.csproj
@@ -0,0 +1,60 @@
+
+
+
+
+ Debug
+ AnyCPU
+ {4BDF9142-7984-485F-AA62-77B7B7359966}
+ Exe
+ Decorator
+ Decorator
+ v4.8
+ 512
+ true
+ true
+
+
+ AnyCPU
+ true
+ full
+ false
+ bin\Debug\
+ DEBUG;TRACE
+ prompt
+ 4
+
+
+ AnyCPU
+ pdbonly
+ true
+ bin\Release\
+ TRACE
+ prompt
+ 4
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
\ No newline at end of file
diff --git a/DesignPattern/Decorator/FillShapeDecorator.cs b/DesignPattern/Decorator/FillShapeDecorator.cs
new file mode 100644
index 0000000..ccda239
--- /dev/null
+++ b/DesignPattern/Decorator/FillShapeDecorator.cs
@@ -0,0 +1,24 @@
+using System;
+using System.Collections.Generic;
+using System.Drawing;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Decorator
+{
+ class FillShapeDecorator : ShapeDecorator
+ {
+ public FillShapeDecorator(Shape shape) : base(shape)
+ {
+
+ }
+
+ public override void Draw(Graphics g)
+ {
+ component.Draw(g);
+
+ g.FillEllipse(Brushes.Green, component.X, component.Y, component.Width, component.Height);
+ }
+ }
+}
diff --git a/DesignPattern/Decorator/Program.cs b/DesignPattern/Decorator/Program.cs
new file mode 100644
index 0000000..4d9a108
--- /dev/null
+++ b/DesignPattern/Decorator/Program.cs
@@ -0,0 +1,25 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Decorator
+{
+ /*
+ * 카테고리: 구조 패턴
+ * 개요: 기존 객체의 구조를 그대로 둔 채, 부가적인 기능을 동적으로 추가함
+ * 일반적으로 상속등으로 서브클래스를 만들어 사용하는 것의 대안적인 방법으로,
+ * 너무 많은 서브클래스들이 만들어지는 경우 유용하게 사용될 수 있음
+ * 서브클래스는 컴파일 타임에 결정되지만, 데코레이터는 런타임에서 동적으로 추가확장 됨
+ */
+ class Program
+ {
+ static void Main(string[] args)
+ {
+ Client.HowToTest();
+
+ Console.ReadKey();
+ }
+ }
+}
diff --git a/DesignPattern/Decorator/Properties/AssemblyInfo.cs b/DesignPattern/Decorator/Properties/AssemblyInfo.cs
new file mode 100644
index 0000000..483191e
--- /dev/null
+++ b/DesignPattern/Decorator/Properties/AssemblyInfo.cs
@@ -0,0 +1,36 @@
+using System.Reflection;
+using System.Runtime.CompilerServices;
+using System.Runtime.InteropServices;
+
+// 어셈블리에 대한 일반 정보는 다음 특성 집합을 통해
+// 제어됩니다. 어셈블리와 관련된 정보를 수정하려면
+// 이러한 특성 값을 변경하세요.
+[assembly: AssemblyTitle("Decorator")]
+[assembly: AssemblyDescription("")]
+[assembly: AssemblyConfiguration("")]
+[assembly: AssemblyCompany("")]
+[assembly: AssemblyProduct("Decorator")]
+[assembly: AssemblyCopyright("Copyright © 2022")]
+[assembly: AssemblyTrademark("")]
+[assembly: AssemblyCulture("")]
+
+// ComVisible을 false로 설정하면 이 어셈블리의 형식이 COM 구성 요소에
+// 표시되지 않습니다. COM에서 이 어셈블리의 형식에 액세스하려면
+// 해당 형식에 대해 ComVisible 특성을 true로 설정하세요.
+[assembly: ComVisible(false)]
+
+// 이 프로젝트가 COM에 노출되는 경우 다음 GUID는 typelib의 ID를 나타냅니다.
+[assembly: Guid("4bdf9142-7984-485f-aa62-77b7b7359966")]
+
+// 어셈블리의 버전 정보는 다음 네 가지 값으로 구성됩니다.
+//
+// 주 버전
+// 부 버전
+// 빌드 번호
+// 수정 버전
+//
+// 모든 값을 지정하거나 아래와 같이 '*'를 사용하여 빌드 번호 및 수정 번호를
+// 기본값으로 할 수 있습니다.
+// [assembly: AssemblyVersion("1.0.*")]
+[assembly: AssemblyVersion("1.0.0.0")]
+[assembly: AssemblyFileVersion("1.0.0.0")]
diff --git a/DesignPattern/Decorator/Shape.cs b/DesignPattern/Decorator/Shape.cs
new file mode 100644
index 0000000..c9f0d1f
--- /dev/null
+++ b/DesignPattern/Decorator/Shape.cs
@@ -0,0 +1,19 @@
+using System;
+using System.Collections.Generic;
+using System.Drawing;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Decorator
+{
+ public abstract class Shape
+ {
+ public abstract void Draw(Graphics g);
+
+ public int X { get; set; }
+ public int Y { get; set; }
+ public int Width { get; set; }
+ public int Height { get; set; }
+ }
+}
diff --git a/DesignPattern/Decorator/ShapeDecorator.cs b/DesignPattern/Decorator/ShapeDecorator.cs
new file mode 100644
index 0000000..0b4008a
--- /dev/null
+++ b/DesignPattern/Decorator/ShapeDecorator.cs
@@ -0,0 +1,18 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Decorator
+{
+ public abstract class ShapeDecorator : Shape
+ {
+ protected Shape component;
+
+ public ShapeDecorator(Shape shape)
+ {
+ component = shape;
+ }
+ }
+}
diff --git a/DesignPattern/DesignPattern.sln b/DesignPattern/DesignPattern.sln
index 11fbf5f..9658118 100644
--- a/DesignPattern/DesignPattern.sln
+++ b/DesignPattern/DesignPattern.sln
@@ -19,6 +19,8 @@ Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Bridge", "Bridge\Bridge.csp
EndProject
Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Composite", "Composite\Composite.csproj", "{52E6E6B5-8A12-4A92-8A38-8697247F4CA2}"
EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Decorator", "Decorator\Decorator.csproj", "{4BDF9142-7984-485F-AA62-77B7B7359966}"
+EndProject
Global
GlobalSection(SolutionConfigurationPlatforms) = preSolution
Debug|Any CPU = Debug|Any CPU
@@ -57,6 +59,10 @@ Global
{52E6E6B5-8A12-4A92-8A38-8697247F4CA2}.Debug|Any CPU.Build.0 = Debug|Any CPU
{52E6E6B5-8A12-4A92-8A38-8697247F4CA2}.Release|Any CPU.ActiveCfg = Release|Any CPU
{52E6E6B5-8A12-4A92-8A38-8697247F4CA2}.Release|Any CPU.Build.0 = Release|Any CPU
+ {4BDF9142-7984-485F-AA62-77B7B7359966}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+ {4BDF9142-7984-485F-AA62-77B7B7359966}.Debug|Any CPU.Build.0 = Debug|Any CPU
+ {4BDF9142-7984-485F-AA62-77B7B7359966}.Release|Any CPU.ActiveCfg = Release|Any CPU
+ {4BDF9142-7984-485F-AA62-77B7B7359966}.Release|Any CPU.Build.0 = Release|Any CPU
EndGlobalSection
GlobalSection(SolutionProperties) = preSolution
HideSolutionNode = FALSE