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Commit 874d250

Browse files
state pattern example
1 parent 65d64aa commit 874d250

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3 files changed

+98
-0
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3 files changed

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‎DesignPatterns.sln

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@@ -43,6 +43,8 @@ Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "VisitorPattern", "VisitorPa
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EndProject
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Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "StrategyPattern", "StrategyPattern\StrategyPattern.csproj", "{FCF7B59D-63F0-4BE3-AE39-3EA7D562A67E}"
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EndProject
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Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "StatePattern", "StatePattern\StatePattern.csproj", "{606D9229-082C-4A71-8DD3-1918A14B7CF2}"
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EndProject
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Global
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GlobalSection(SolutionConfigurationPlatforms) = preSolution
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Debug|Any CPU = Debug|Any CPU
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{FCF7B59D-63F0-4BE3-AE39-3EA7D562A67E}.Debug|Any CPU.Build.0 = Debug|Any CPU
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{FCF7B59D-63F0-4BE3-AE39-3EA7D562A67E}.Release|Any CPU.ActiveCfg = Release|Any CPU
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{FCF7B59D-63F0-4BE3-AE39-3EA7D562A67E}.Release|Any CPU.Build.0 = Release|Any CPU
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{606D9229-082C-4A71-8DD3-1918A14B7CF2}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
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{606D9229-082C-4A71-8DD3-1918A14B7CF2}.Debug|Any CPU.Build.0 = Debug|Any CPU
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{606D9229-082C-4A71-8DD3-1918A14B7CF2}.Release|Any CPU.ActiveCfg = Release|Any CPU
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{606D9229-082C-4A71-8DD3-1918A14B7CF2}.Release|Any CPU.Build.0 = Release|Any CPU
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EndGlobalSection
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GlobalSection(SolutionProperties) = preSolution
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HideSolutionNode = FALSE

‎StatePattern/Program.cs

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using System;
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namespace StatePattern
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{
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interface IWritingState {
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void Write(string words);
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}
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class UpperCase : IWritingState
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{
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public void Write(string words)
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{
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Console.WriteLine(words.ToUpper());
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}
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}
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class LowerCase : IWritingState
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{
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public void Write(string words)
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{
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Console.WriteLine(words.ToLower());
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}
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}
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class DefaultText : IWritingState
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{
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public void Write(string words)
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{
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Console.WriteLine(words);
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}
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}
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class TextEditor {
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private IWritingState mState;
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public TextEditor()
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{
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mState = new DefaultText();
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}
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public void SetState(IWritingState state)
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{
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mState = state;
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}
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public void Type(string words)
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{
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mState.Write(words);
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}
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}
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class Program
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{
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static void Main(string[] args)
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{
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var editor = new TextEditor();
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editor.Type("First line");
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editor.SetState(new UpperCase());
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editor.Type("Second Line");
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editor.Type("Third Line");
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editor.SetState(new LowerCase());
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editor.Type("Fourth Line");
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editor.Type("Fifthe Line");
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// Output:
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// First line
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// SECOND LINE
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// THIRD LINE
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// fourth line
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// fifth line
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Console.ReadLine();
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}
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}
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}

‎StatePattern/StatePattern.csproj

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<Project Sdk="Microsoft.NET.Sdk">
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<PropertyGroup>
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<OutputType>Exe</OutputType>
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<TargetFramework>netcoreapp2.0</TargetFramework>
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</PropertyGroup>
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</Project>

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