自动映射器忽略自动展平

Question

I have a Entity in a legacy system which has the format

public Guid Id {get;set;}
public int Duration {get;set;}
public bool DurationType {get;set;}

In a ViewModel I have the following

public Guid Id {get; set;}
public int Duration {get;set;}

Mapping from The Entity to the View Model works fine, however when I try and map from the ViewModel to the Entity it dies.

What it appears to be doing is trying to call a non existing property Duration.Type in the reverse mapping (ie it's trying to auto-flatten). This results in the error Cannot map int32 to bool .

Does anyone have any suggestions on how to disable auto-flattening in AutoMapper or manually set the fields which maps happen to using attributes.

Answer 1

To have it ignore the DurationType property when mapping from ViewModel to Entity add this to your mapping configuration:

Mapper.CreateMap<ViewModel,Entity>()
      .ForMember(dest => dest.DurationType, options => options.Ignore());