How to assign parent reference to a property in a child with AutoMapper

Question

I'm trying to find a way of configuring AutoMapper to set a property in a destination object with a reference of its source parent object. The code below shows what I'm trying to achieve. I'm moving data into the Parent & Child instances from the data objects. The mapping works fine to create the List collection with correct data but I need to have a ForEach to assign the parent instance reference.

public class ParentChildMapper {     public void MapData(ParentData parentData)     {         Mapper.CreateMap<ParentData, Parent>();         Mapper.CreateMap<ChildData, Child>();          //Populates both the Parent & List of Child objects:         var parent = Mapper.Map<ParentData, Parent>(parentData);          //Is there a way of doing this in AutoMapper?         foreach (var child in parent.Children)         {             child.Parent = parent;         }          //do other stuff with parent     } }  public class Parent {     public virtual string FamilyName { get; set; }      public virtual IList<Child> Children { get; set; } }  public class Child {     public virtual string FirstName { get; set; }      public virtual Parent Parent { get; set; } }  public class ParentData {     public string FamilyName { get; set; }      public List<Child> Children { get; set; } }  public class ChildData {     public string FirstName { get; set; } } 

Answer 1

Use AfterMap. Something like this:

Mapper.CreateMap<ParentData, Parent>()     .AfterMap((s,d) => {         foreach(var c in d.Children)             c.Parent = d;         });