Question
I want to somehow map entity object to business object using reflection in c# -
public class Category
{
public int CategoryID { get; set; }
public string CategoryName { get; set; }
}
My Entity Class has same properties, CategoryId and CategoryName.Any best practice using reflection or dynamic would be appreciated.
Accepted Answer
You can use Automapper or Valueinjecter
Edit:
Ok I wrote a function that uses reflection, beware it is not gonna handle cases where mapped properties aren't exactly equal e.g IList won't map with List
public static void MapObjects(object source, object destination)
{
Type sourcetype = source.GetType();
Type destinationtype = destination.GetType();
var sourceProperties = sourcetype.GetProperties();
var destionationProperties = destinationtype.GetProperties();
var commonproperties = from sp in sourceProperties
join dp in destionationProperties on new {sp.Name, sp.PropertyType} equals
new {dp.Name, dp.PropertyType}
select new {sp, dp};
foreach (var match in commonproperties)
{
match.dp.SetValue(destination, match.sp.GetValue(source, null), null);
}
}
Popular Answer
This is something that I wrote to do what I think you are trying to do and you don't have to cast your business objects:
public static TEntity ConvertObjectToEntity<TEntity>(object objectToConvert, TEntity entity) where TEntity : class
{
if (objectToConvert == null || entity == null)
{
return null;
}
Type BusinessObjectType = entity.GetType();
PropertyInfo[] BusinessPropList = BusinessObjectType.GetProperties();
Type EntityObjectType = objectToConvert.GetType();
PropertyInfo[] EntityPropList = EntityObjectType.GetProperties();
foreach (PropertyInfo businessPropInfo in BusinessPropList)
{
foreach (PropertyInfo entityPropInfo in EntityPropList)
{
if (entityPropInfo.Name == businessPropInfo.Name && !entityPropInfo.GetGetMethod().IsVirtual && !businessPropInfo.GetGetMethod().IsVirtual)
{
businessPropInfo.SetValue(entity, entityPropInfo.GetValue(objectToConvert, null), null);
break;
}
}
}
return entity;
}
Usage example:
public static Category GetCategory(int id)
{
return ConvertObjectToEntity(Database.GetCategoryEntity(id), new Category());
}
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