Simple.AutoMapper 1.0.4

.NET 8.0 This package targets .NET 8.0. The package is compatible with this framework or higher. .NET Standard 2.0 This package targets .NET Standard 2.0. The package is compatible with this framework or higher.
There is a newer version of this package available.
See the version list below for details. 
dotnet add package Simple.AutoMapper --version 1.0.4
                    


                    

                
NuGet\Install-Package Simple.AutoMapper -Version 1.0.4
This command is intended to be used within the Package Manager Console in Visual Studio, as it uses the NuGet module's version of Install-Package. 
<PackageReference Include="Simple.AutoMapper" Version="1.0.4" />
For projects that support PackageReference, copy this XML node into the project file to reference the package. 
<PackageVersion Include="Simple.AutoMapper" Version="1.0.4" />
                    


                            Directory.Packages.props
                        

                    

                
<PackageReference Include="Simple.AutoMapper" />
                    


                            Project file
For projects that support Central Package Management (CPM), copy this XML node into the solution Directory.Packages.props file to version the package. 
paket add Simple.AutoMapper --version 1.0.4
                    


                    

                
#r "nuget: Simple.AutoMapper, 1.0.4"
#r directive can be used in F# Interactive and Polyglot Notebooks. Copy this into the interactive tool or source code of the script to reference the package. 
#:package Simple.AutoMapper@1.0.4
#:package directive can be used in C# file-based apps starting in .NET 10 preview 4. Copy this into a .cs file before any lines of code to reference the package. 
#addin nuget:?package=Simple.AutoMapper&version=1.0.4
                    


                            Install as a Cake Addin
                        

                    

                
#tool nuget:?package=Simple.AutoMapper&version=1.0.4
                    


                            Install as a Cake Tool

Simple.AutoMapper

High-performance mapping engine built around a CreateMap configuration API.

Key Features

  1. Compiled expressions
  • Compiles mapping logic using expression trees
  • Compiles on the first run, then reuses the cached delegate
  • Eliminates reflection overhead at runtime
  1. Per-type caching
  • Thread-safe caching with ConcurrentDictionary
  • Stores compiled mapping functions per TypePair
  • Immediately reused for subsequent mappings of the same types
  1. CreateMap configuration API
engine.CreateMap<Entity1, EntityDTO1>()
  .Ignore(d => d.SomeProperty) // Ignore specific property
  .ForMember(d => d.CustomProp, opt => opt.MapFrom(s => s.SourceProp));
  1. Performance optimizations
  • First run: includes compilation
  • Subsequent runs: directly call the cached compiled function
  • Parallel execution: thread-safe concurrent usage

How to Use

// 1) Create the engine and configure mappings (once at app startup)
var engine = new MappingEngine();
engine.CreateMap<UserEntity, UserDTO>();
engine.CreateMap<AddressEntity, AddressDTO>();

// 2) Execute mappings (reused many times)
var userDto = engine.Map<UserEntity, UserDTO>(userEntity);
var userDtos = engine.MapList<UserEntity, UserDTO>(userEntities);

Performance Characteristics

  1. Compile caching: significantly faster after the first run (warm-up)

  2. Memory efficiency: only one compiled function per type pair is kept

  3. Concurrency: safe in multithreaded environments

  4. Predictable performance: consistent throughput after caching

Advantages Over the basic Simple.AutoMapper

Aspect Basic Simple.AutoMapper MappingEngine
Performance Reflection on every call Compile once, then use cache
Memory Low Per-type cache (balanced)
Configuration None Pre-configure with CreateMap
Extensibility Limited Supports Ignore, ForMember, and more

Tests show a notable speedup when mapping 1,000 entities after the compiled mapping is cached.

Product Compatible and additional computed target framework versions.
.NET net5.0 was computed.  net5.0-windows was computed.  net6.0 was computed.  net6.0-android was computed.  net6.0-ios was computed.  net6.0-maccatalyst was computed.  net6.0-macos was computed.  net6.0-tvos was computed.  net6.0-windows was computed.  net7.0 was computed.  net7.0-android was computed.  net7.0-ios was computed.  net7.0-maccatalyst was computed.  net7.0-macos was computed.  net7.0-tvos was computed.  net7.0-windows was computed.  net8.0 is compatible.  net8.0-android was computed.  net8.0-browser was computed.  net8.0-ios was computed.  net8.0-maccatalyst was computed.  net8.0-macos was computed.  net8.0-tvos was computed.  net8.0-windows was computed.  net9.0 is compatible.  net9.0-android was computed.  net9.0-browser was computed.  net9.0-ios was computed.  net9.0-maccatalyst was computed.  net9.0-macos was computed.  net9.0-tvos was computed.  net9.0-windows was computed.  net10.0 was computed.  net10.0-android was computed.  net10.0-browser was computed.  net10.0-ios was computed.  net10.0-maccatalyst was computed.  net10.0-macos was computed.  net10.0-tvos was computed.  net10.0-windows was computed. 
.NET Core netcoreapp2.0 was computed.  netcoreapp2.1 was computed.  netcoreapp2.2 was computed.  netcoreapp3.0 was computed.  netcoreapp3.1 was computed. 
.NET Standard netstandard2.0 is compatible.  netstandard2.1 is compatible. 
.NET Framework net461 was computed.  net462 was computed.  net463 was computed.  net47 was computed.  net471 was computed.  net472 was computed.  net48 was computed.  net481 was computed. 
MonoAndroid monoandroid was computed. 
MonoMac monomac was computed. 
MonoTouch monotouch was computed. 
Tizen tizen40 was computed.  tizen60 was computed. 
Xamarin.iOS xamarinios was computed. 
Xamarin.Mac xamarinmac was computed. 
Xamarin.TVOS xamarintvos was computed. 
Xamarin.WatchOS xamarinwatchos was computed. 
Compatible target framework(s)
Included target framework(s) (in package)
Learn more about Target Frameworks and .NET Standard.

  • .NETStandard 2.0

    • No dependencies.

  • .NETStandard 2.1

    • No dependencies.

  • net8.0

    • No dependencies.

  • net9.0

    • No dependencies.

NuGet packages

This package is not used by any NuGet packages.

GitHub repositories

This package is not used by any popular GitHub repositories.

Version Downloads Last Updated
1.0.9 91 1/11/2026
1.0.8 184 10/27/2025
1.0.6 169 8/22/2025
1.0.5 177 8/21/2025
1.0.4 175 8/20/2025

v1.0.4 - High-performance object simple mapping for .NET