Auto-technician error ()
Okay, I hope I'm just ignoring the obvious somehow. Following is the following situation with the code. For some reason, the SequenceNo property is still displayed even though I call Ignore (). I am using the latter. I also tested it with two different classes in the same project and it seems to work, so what happened to this scenario?
This is a domain object:
public class CableID
{
private string _panelID1;
public string PanelID1
{
get { return _panelID1; }
private set { _panelID1 = value; }
}
private string _panelID2;
public string PanelID2
{
get { return _panelID2; }
private set { _panelID2 = value; }
}
private int _sequenceNo;
public int SequenceNo
{
get { return _sequenceNo; }
private set { _sequenceNo = value; }
}
private DateTime _inService;
public DateTime InService
{
get { return _inService; }
set { _inService = value; }
}
private string _id;
public string ID
{
get { return _id; }
private set { _id = value; }
}
public CableID(string panelID1, string panelID2, int sequenceNo)
{
this.PanelID1 = panelID1;
this.PanelID2 = panelID2;
this.SequenceNo = sequenceNo;
this.ID = string.Format("({0}-{1}){2}", this.PanelID1, this.PanelID2, this.SequenceNo);
}
public CableID(string id)
{
if (string.IsNullOrEmpty(id))
throw new ArgumentNullException("id");
this.ID = id;
}
}
And here is the DTO object:
public class CableIDDTO
{
private string _panelID1;
public string PanelID1
{
get { return _panelID1; }
set { _panelID1 = value; }
}
private string _panelID2;
public string PanelID2
{
get { return _panelID2; }
set { _panelID2 = value; }
}
private int _sequenceNo;
public int SequenceNo
{
get { return _sequenceNo; }
set { _sequenceNo = value; }
}
private string _id;
public string ID
{
get { return _id; }
set { _id = value; }
}
public CableIDDTO()
{ }
public CableIDDTO(string panelID1, string panelID2, int sequenceNo)
{
this.PanelID2 = panelID1;
this.PanelID1 = panelID2;
this.SequenceNo = sequenceNo;
this.ID = string.Format("({0}-{1}){2}", this.PanelID2, this.PanelID1, this.SequenceNo);
}
}
And finally, the AutoMapper use case:
CableID cableID = new CableID("A1", "B1", 2);
Mapper.CreateMap<CableID, CableIDDTO>()
.ForMember(dest => dest.SequenceNo, opt => opt.Ignore());
CableIDDTO dto = Mapper.Map<CableID, CableIDDTO>(cableID);
dto.SequenceNo = 2, since I set Ignore () it should be 0.
source to share
This is because AutoMapper finds this constructor CableIDDTO
:
public CableIDDTO(string panelID1, string panelID2, int sequenceNo)
and call it by setting sequenceNo
. I'm not entirely sure how or why he does it - I'll keep digging.
You can fix this by calling .ConstructUsing
and telling AutoMapper to use the no-args constructor:
Mapper.CreateMap<CableID, CableIDDTO>()
.ConstructUsing((Func<CableID, CableIDDTO>)(src => new CableIDDTO()))
.ForMember(dest => dest.SequenceNo, opt => opt.Ignore());
On further investigation, it looks like an AutoMapper function that tries to map source property names to destination constructors. Since your appointment type ( CableIDDTO
) was the designer, which is perfectly matched to several property names in the source ( panelID1
, panelID2
, sequenceNo
), the constructor has been called.
Another way to disable this feature is to call DisableConstructorMapping
:
Mapper.Configuration.DisableConstructorMapping()
source to share