AutoMapper 16.1.1

AutoMapper

CI NuGet Documentation Status

What is AutoMapper?

AutoMapper is a simple little library built to solve a deceptively complex problem - getting rid of code that mapped one object to another. This type of code is rather dreary and boring to write, so why not invent a tool to do it for us?

This is the main repository for AutoMapper, but there's more:

How do I get started?

First, configure AutoMapper to know what types you want to map, in the startup of your application:

var configuration = new MapperConfiguration(cfg => 
{
    cfg.CreateMap<Foo, FooDto>();
    cfg.CreateMap<Bar, BarDto>();
}, loggerFactory);

// or more typically, using IServiceCollection with automatic service registration
services.AddAutoMapper(cfg => 
{
    cfg.CreateMap<Foo, FooDto>();
    cfg.CreateMap<Bar, BarDto>();
});
// AutoMapper will automatically register any implementations of:
// - IValueResolver<TSource, TDestination, TDestMember>
// - IMemberValueResolver<TSource, TDestination, TSourceMember, TDestMember>
// - ITypeConverter<TSource, TDestination>
// - IValueConverter<TSourceMember, TDestinationMember>
// - ICondition<TSource, TDestination, TDestMember>
// - IPreCondition<TSource, TDestination>
// - IMappingAction<TSource, TDestination>
// from the provided assemblies

// only during development, validate your mappings; remove it before release
#if DEBUG
configuration.AssertConfigurationIsValid();
#endif
// use DI (http://docs.automapper.io/en/latest/Dependency-injection.html) or create the mapper yourself
var mapper = configuration.CreateMapper();

Then in your application code, execute the mappings:

var fooDto = mapper.Map<FooDto>(foo);
var barDto = mapper.Map<BarDto>(bar);

Check out the getting started guide. When you're done there, the wiki goes in to the nitty-gritty details. If you have questions, you can post them to Stack Overflow.

Where can I get it?

First, install NuGet. Then, install AutoMapper from the package manager console:

PM> Install-Package AutoMapper

Or from the .NET CLI as:

dotnet add package AutoMapper

Do you have an issue?

You might want to know exactly what your mapping does at runtime.

If you're still running into problems, file an issue above.

If you are a paying customer, you can contact support via your account.

How do I set the license key?

You can set the license key when registering AutoMapper:

services.AddAutoMapper(cfg => 
{
    cfg.LicenseKey = "<license key here>";
})

You can register for your license key at AutoMapper.io

Showing the top 20 packages that depend on AutoMapper.

Packages Downloads
AutoMapper.Extensions.Microsoft.DependencyInjection
AutoMapper extensions for ASP.NET Core
 140
AutoMapper.Extensions.Microsoft.DependencyInjection
AutoMapper extensions for ASP.NET Core
 141
AutoMapper.Extensions.Microsoft.DependencyInjection
AutoMapper extensions for ASP.NET Core
 162
AutoMapper.Extensions.Microsoft.DependencyInjection
AutoMapper extensions for ASP.NET Core
 974
DHP.Core
Package Description
 139
DHP.Core
Package Description
 157
DHP.Core
Package Description
 249
Duende.IdentityServer.EntityFramework.Storage
EntityFramework persistence layer for Duende IdentityServer
 135
Duende.IdentityServer.EntityFramework.Storage
EntityFramework persistence layer for Duende IdentityServer
 136
Duende.IdentityServer.EntityFramework.Storage
EntityFramework persistence layer for Duende IdentityServer
 137
Duende.IdentityServer.EntityFramework.Storage
EntityFramework persistence layer for Duende IdentityServer
 138
Duende.IdentityServer.EntityFramework.Storage
EntityFramework persistence layer for Duende IdentityServer
 139
Duende.IdentityServer.EntityFramework.Storage
EntityFramework persistence layer for Duende IdentityServer
 140
Duende.IdentityServer.EntityFramework.Storage
EntityFramework persistence layer for Duende IdentityServer
 142
Duende.IdentityServer.EntityFramework.Storage
EntityFramework persistence layer for Duende IdentityServer
 150

.NET Framework 4.7.1

.NET Standard 2.0

.NET 10.0

.NET 9.0

.NET 8.0

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