Memento

PatternsComportamentais/Memento/Caretaker.cs

@@ -0,0 +1,9 @@
+using System;
+
+namespace Memento
+{
+    public class Caretaker
+    {
+        public Memento Memento { get; set; }
+    }
+}

PatternsComportamentais/Memento/Memento.cs

@@ -0,0 +1,16 @@
+using System;
+
+namespace Memento
+{
+    public class Memento
+    {
+        public string State { get; private set; }
+
+        public Memento(string state)
+        {
+            this.State = state;
+        }
+
+
+    }
+}

PatternsComportamentais/Memento/Memento.csproj

@@ -0,0 +1,8 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>netcoreapp3.1</TargetFramework>
+  </PropertyGroup>
+
+</Project>

PatternsComportamentais/Memento/Originator.cs

@@ -0,0 +1,29 @@
+using System;
+
+namespace Memento
+{
+    public class Originator
+    {
+        private string _state;
+        public string State
+        {
+            get { return _state; }
+            set
+            {
+                _state = value;
+                Console.WriteLine($"State = {value}");
+            }
+        }
+
+        public Memento CreateMemento()
+        {
+            return new Memento(_state);
+        }
+
+        public void SetMemento(Memento memento)
+        {
+            Console.WriteLine("Restaurando o estado...");
+            State = memento.State;
+        }
+    }
+}

PatternsComportamentais/Memento/Program.cs

@@ -0,0 +1,24 @@
+using System;
+
+namespace Memento
+{
+    class Program
+    {
+        static void Main(string[] args)
+        {
+            Originator o = new Originator
+            {
+                State = "On"
+            };
+
+            Caretaker c = new Caretaker
+            {
+                Memento = o.CreateMemento()
+            };
+
+            o.State = "Off";
+
+            o.SetMemento(c.Memento);
+        }
+    }
+}

PatternsComportamentais/PatternsComportamentais.sln

@@ -13,6 +13,8 @@ Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Iterator", "Iterator\Iterat
 EndProject
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Mediator", "Mediator\Mediator.csproj", "{4898D85D-190C-4B86-B905-C66EB661CCF2}"
 EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Memento", "Memento\Memento.csproj", "{189CDE42-E8FF-4D76-851B-321F75172835}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -39,6 +41,10 @@ Global
 		{4898D85D-190C-4B86-B905-C66EB661CCF2}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{4898D85D-190C-4B86-B905-C66EB661CCF2}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{4898D85D-190C-4B86-B905-C66EB661CCF2}.Release|Any CPU.Build.0 = Release|Any CPU
+		{189CDE42-E8FF-4D76-851B-321F75172835}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{189CDE42-E8FF-4D76-851B-321F75172835}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{189CDE42-E8FF-4D76-851B-321F75172835}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{189CDE42-E8FF-4D76-851B-321F75172835}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE