Added AutoMapper example

AutoMapper/AutoMapper.csproj

@@ -0,0 +1,10 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+ <PropertyGroup>
+ <TargetFramework>net7.0</TargetFramework>
+ <ImplicitUsings>enable</ImplicitUsings>
+ <Nullable>enable</Nullable>
+ <OutputType>Exe</OutputType>
+ </PropertyGroup>
+
+</Project>

AutoMapper/AutoMapper.sln

@@ -0,0 +1,16 @@
+
+Microsoft Visual Studio Solution File, Format Version 12.00
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "AutoMapper", "AutoMapper.csproj", "{A3FA8FA1-6587-44BB-A0D9-3F134FE1E773}"
+EndProject
+Global
+ GlobalSection(SolutionConfigurationPlatforms) = preSolution
+ Debug|Any CPU = Debug|Any CPU
+ Release|Any CPU = Release|Any CPU
+ EndGlobalSection
+ GlobalSection(ProjectConfigurationPlatforms) = postSolution
+ {A3FA8FA1-6587-44BB-A0D9-3F134FE1E773}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+ {A3FA8FA1-6587-44BB-A0D9-3F134FE1E773}.Debug|Any CPU.Build.0 = Debug|Any CPU
+ {A3FA8FA1-6587-44BB-A0D9-3F134FE1E773}.Release|Any CPU.ActiveCfg = Release|Any CPU
+ {A3FA8FA1-6587-44BB-A0D9-3F134FE1E773}.Release|Any CPU.Build.0 = Release|Any CPU
+ EndGlobalSection
+EndGlobal

AutoMapper/BlogPost.cs

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+namespace AutoMapper;
+
+public class BlogPost
+{
+ public int Id { get; set; }
+ public string Title { get; set; } = string.Empty;
+ public DateOnly PublishedDate { get; set; }
+}

AutoMapper/BlogPostDto.cs

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+namespace AutoMapper;
+
+public class BlogPostDto
+{
+ public int Id { get; set; }
+ public string Title { get; set; } = string.Empty;
+ public DateOnly PublishedDate { get; set; }
+}

AutoMapper/Mapper.cs

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+namespace AutoMapper;
+
+public static class Mapper
+{
+ public static TResult Map<TIn, TResult>(TIn obj) where TResult : new()
+ {
+ var result = new TResult();
+
+ var inputProperties = typeof(TIn).GetProperties();
+ var resultProperties = typeof(TResult).GetProperties();
+
+ foreach (var inputProperty in inputProperties)
+ {
+ // Find the property that has the same name and type
+ var resultProperty = resultProperties.FirstOrDefault(prop => prop.Name == inputProperty.Name && prop.PropertyType == inputProperty.PropertyType);
+
+ // If it isn't writeable, don't try to write the value
+ if (resultProperty != null && resultProperty.CanWrite)
+ {
+ resultProperty.SetValue(result, inputProperty.GetValue(obj));
+ }
+ }
+
+ return result;
+ }
+}

AutoMapper/Program.cs

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+using System.Threading.Channels;
+using AutoMapper;
+
+var blogPost = new BlogPost { Id = 1, Title = "Write your own AutoMapper in C#", PublishedDate = new DateOnly(2023, 3, 18) };
+var dto = Mapper.Map<BlogPost, BlogPostDto>(blogPost);
+Console.Write($"Blog Post: '{dto.Title}' was published at: {dto.PublishedDate}");

AutoMapper/README.md

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+# Write your own AutoMapper in C#
+
+Sometimes you have to map an object to another representation in C#. And you think: Why isn't C# duck-typing capable?
+
+You might hear of libraries like [**AutoMapper**](https://automapper.org/) that do the tedious work of mapping one object to another with the same structure. This blog post will give a super simple introduction to how those libraries are working internally. 
+
+In the end a bit of a subjective topic on whether or not I would use such libraries.
+
+Found [here](https://steven-giesel.com/blogPost/16bf84c2-1464-40ab-8ef6-58f225e21c15)

README.md

@@ -4,6 +4,7 @@ Contains all of my examples from various blog posts. You can find a comprehensiv
 
 | BlogPost | Publish Date |
 | -------------------------------------------------------------------------------------------------------------- | ------------ |
+| [Write your own AutoMapper in C#](AutoMapper/) | 18.03.2023 |
 | [How to write your own cron Job scheduler in ASP.NET Core (like Quartz, Hangfire, ...)](CronBackgroundWorker/) | 09.03.2023 |
 | [Performance (ReadOnly)List vs Immutable collection types](ImmutablePerformance/) | 26.02.2023 |
 | [Multi-Tenancy with RavenDB and ASP.NET Core](MultiTenantRavenDB/) | 05.02.2023 |