InvaderZim85/ZimLabs.Mapper

Easy way to map two objects into one

ZimLabs.Mapper

Easy way to map two objects into one

Usage

Mapping

The two objects:

1. The objects

   internal class TargetPerson
   {
       public int Id { get; set; }
       public string FirstName { get; set; }
       public string LastName { get; set; }
   
       // Ignore this property!
       [IgnoreProperty]
       public string IgnoreValue { get; set; }
   
       public int? OtherId { get; set; }
   }
   
   internal class SourcePerson
   {
       public int? Id { get; set; }
       public string FirstName { get; set; }
       public string LastName { get; set; }
       public string IgnoreValue { get; set; }
       public int OtherId { get; set; }
   }

2. Map two objects (both objects exists)

   var sourcePerson = new SourcePerson
   {
       Id = null,
       FirstName = "Bender",
       LastName = "Rodriguez",
       IgnoreValue = "Some fancy value",
       OtherId = 666
   };
   
   var targetPerson = new TargetPerson();
   
   Mapper.Map(sourcePerson, targetPerson);

3. Map two objects but create a new target object

   var sourcePerson = new SourcePerson
   {
       Id = null,
       FirstName = "Bender",
       LastName = "Rodriguez",
       IgnoreValue = "Some fancy value",
       OtherId = 666
   };
   
   var targetPerson = Mapper.CreateAndMap<SourcePerson, TargetPerson>(sourcePerson);

Get changes

1. The objects

   var firstPerson = new TargetPerson
   {
       Id = 1,
       FirstName = "Bender",
       LastName = "Rodriguez",
       IgnoreValue = "Some fancy value",
       OtherId = 666
   };
   
   var secondPerson = new TargetPerson
   {
       Id = 1,
       FirstName = "Philip J.",
       LastName = "Fry",
       IgnoreValue = "Some fancy value",
       OtherId = 123
   };

2. Get the changes

   var changes = firstPerson.GetChanges(secondPerson);

   The variable change contains a list with all changes. Every entry contains the following properties:

   • Property: The name of the property
   • OldValue The "original" old value
   • NewValue The "new" value

3. The result

   +-----------+-----------+-----------+
   | Property  | OldValue  | NewValue  |
   +-----------+-----------+-----------+
   | FirstName | Bender    | Philip J. |
   | LastName  | Rodriguez | Fry       |
   | OtherId   | 666       | 123       |
   +-----------+-----------+-----------+