.net - automapper - ignore mapping if property type is different with same property name - C#

Question

How can I ignore mapping if property type is different with same property name? By default it's throwing error.

Mapper.CreateMap<EntityAttribute, LeadManagementService.LeadEntityAttribute>();

Model = Mapper.Map<EntityAttribute, LeadManagementService.LeadEntityAttribute>(EntityAttribute);

I know a way to specify the property name to ignore but that's not what I want.

  .ForMember(d=>d.Field, m=>m.Ignore());

Because in the future I might add new properties. So i need to ignore mapping for all properties with different data types.

Answer 1

You can use ForAllMembers() to setup the appropriate mapping condition:

Mapper.Initialize(cfg =>
{
    cfg.CreateMap<EntityAttribute, LeadEntityAttribute>().ForAllMembers(memberConf =>
    {
        memberConf.Condition((ResolutionContext cond) => cond.DestinationType == cond.SourceType);
    });
}

You can also apply it globally using ForAllMaps():

Mapper.Initialize(cfg =>
{
    // register your maps here
    cfg.CreateMap<A, B>();

    cfg.ForAllMaps((typeMap, mappingExpr) =>
    {
        var ignoredPropMaps = typeMap.GetPropertyMaps();

        foreach (var map in ignoredPropMaps)
        {
            var sourcePropInfo = map.SourceMember as PropertyInfo;
            if (sourcePropInfo == null) continue;

            if (sourcePropInfo.PropertyType != map.DestinationPropertyType)
                map.Ignore();
        }
    });
});