Factory method

DesignPatternGuru/DesignPatternGuru.sln

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+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 17
+VisualStudioVersion = 17.3.32929.385
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "FactoryMethod", "FactoryMethod\FactoryMethod.csproj", "{4F58C486-7121-435B-B7B2-F3ADD0FBE2AE}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{4F58C486-7121-435B-B7B2-F3ADD0FBE2AE}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{4F58C486-7121-435B-B7B2-F3ADD0FBE2AE}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{4F58C486-7121-435B-B7B2-F3ADD0FBE2AE}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{4F58C486-7121-435B-B7B2-F3ADD0FBE2AE}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {3E5A9C6B-2E8A-466E-B5E0-4379902EFFAC}
+	EndGlobalSection
+EndGlobal

DesignPatternGuru/DesignPatternGuru/DesignPatternGuru.csproj

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+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net6.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+</Project>

DesignPatternGuru/DesignPatternGuru/Program.cs

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+// See https://aka.ms/new-console-template for more information
+Console.WriteLine("Hello, World!");

DesignPatternGuru/FactoryMethod/Client.cs

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+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace FactoryMethod
+{
+	internal class Client
+	{
+		public void Main()
+		{
+			Console.WriteLine("App: Launched with the ConcreateCreator1");
+			ClinetCode(new ConcreateCreator1());
+
+			Console.WriteLine("---");
+
+			Console.WriteLine("App: Launched with the ConcreateCreator2");
+			ClinetCode(new ConcreateCreator2());
+		}
+
+		private void ClinetCode(Creator creator)
+		{
+			Console.WriteLine($"Client: I'm not aware of the creator's class, " +
+				$"but it still works. {creator.SomeOperation()}");
+		}
+	}
+}

DesignPatternGuru/FactoryMethod/Creator/ConcreateCreator1.cs

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+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using FactoryMethod.Product;
+
+namespace FactoryMethod.Creator.Creator
+{
+    internal class ConcreateCreator1 : Creator
+    {
+        public override IProduct FactoryMethod()
+        {
+            return new ConcreateProduct1();
+        }
+    }
+}

DesignPatternGuru/FactoryMethod/Creator/ConcreateCreator2.cs

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+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using FactoryMethod.Product;
+
+namespace FactoryMethod.Creator.Creator
+{
+    internal class ConcreateCreator2 : Creator
+    {
+        public override IProduct FactoryMethod()
+        {
+            return new ConcreateProduct2();
+        }
+    }
+}

DesignPatternGuru/FactoryMethod/Creator/Creator.cs

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+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using FactoryMethod.Product;
+
+namespace FactoryMethod.Creator
+{
+    abstract internal class Creator
+    {
+        public abstract IProduct FactoryMethod();
+
+        public string SomeOperation()
+        {
+            var prodcut = FactoryMethod();
+            var result = $"Creator: The same creator's code has just worked with {prodcut.Operation()}";
+
+            return result;
+        }
+    }
+}

DesignPatternGuru/FactoryMethod/FactoryMethod.csproj

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+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net6.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+</Project>

DesignPatternGuru/FactoryMethod/Product/ConcreateProduct1.cs

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+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace FactoryMethod.Product
+{
+    internal class ConcreateProduct1 : IProduct
+    {
+        public string Operation()
+        {
+            return "{Result of ConcreateProduct1}";
+        }
+    }
+}

DesignPatternGuru/FactoryMethod/Product/ConcreateProduct2.cs

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+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace FactoryMethod.Product
+{
+    internal class ConcreateProduct2 : IProduct
+    {
+        public string Operation()
+        {
+            return "{Result of ConcreateProduct2}";
+        }
+    }
+}

DesignPatternGuru/FactoryMethod/Product/IProduct.cs

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+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace FactoryMethod.Product
+{
+    internal interface IProduct
+    {
+        public string Operation();
+    }
+}

DesignPatternGuru/FactoryMethod/Program.cs

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+namespace FactoryMethod
+{
+	internal class Program
+	{
+		static void Main(string[] args)
+		{
+			new Client().Main();
+		}
+	}
+}