Writing mapping methods is a machine job. Do not waste your time, let Mapster do it.

PM> Install-Package Mapster

Mapster creates the destination object and maps values to it.

var destObject = sourceObject.Adapt<Destination>();

You create the object, Mapster maps to the object.

sourceObject.Adapt(destObject);

Mapster also provides extensions to map queryables.

using (MyDbContext context = new MyDbContext())
{
    // Build a Select Expression from DTO
    var destinations = context.Sources.ProjectToType<Destination>().ToList();

    // Versus creating by hand:
    var destinations = context.Sources.Select(c => new Destination {
        Id = p.Id,
        Name = p.Name,
        Surname = p.Surname,
        ....
    })
    .ToList();
}

• Automatically generate mapping code on build
• Define setting to nested mapping
• ISet, IDictionary, IReadOnlyDictionary support
• EmptyCollectionIfNull, CreateNewIfNull DestinationTransform
• Several fixes
• New plugins
  • Immutable collection support

Mapster was designed to be efficient on both speed and memory. You could gain a 4x performance improvement whilst using only 1/3 of memory. And you could gain up to 12x faster performance with

• Roslyn Compiler
• FEC
• Mapster CodeGen

Step-into debugging lets you debug your mapping and inspect values just like your code.

Code generation allows you to

• Validate mapping at compile time
• Getting raw performance
• Seeing your mapping code & debugging
• Finding usage of your models' properties

There are currently two tools which you can choose based on your preferences.

• Mapster.Tool NEW!
• TextTemplate

https://github.com/MapsterMapper/Mapster/releases

https://github.com/MapsterMapper/Mapster/wiki

JetBrains kindly provides Mapster with a free open-source licence for their Resharper and Rider.

• Resharper makes Visual Studio a much better IDE
• Rider is fast & powerful cross platform .NET IDE