Extension Method for copying properties form object to another, with first attempt
- by James
Hi All,
Im trying to write an extension method that I can use to copy values from one object property to another object of a different type, as long as the property names and types match exactly.
This is what I have:
public static T CopyFrom<T>(this T toObject, object fromObject)
{
var fromObjectType = fromObject.GetType();
var fromProperties = fromObjectType.GetProperties();
foreach (PropertyInfo toProperty in toObject.GetType().GetProperties())
{
PropertyInfo fromProperty = fromObjectType.GetProperty(toProperty.Name);
if (fromProperty != null) // match found
{
// check types
var fromType = fromProperty.PropertyType.UnderlyingSystemType;
var toType = toProperty.PropertyType.UnderlyingSystemType;
if (toType.IsAssignableFrom(fromType))
{
toProperty.SetValue(toObject, fromProperty.GetValue(fromObject, null), null);
}
}
}
return toObject;
}
This is working great for non boxed types, but Nullable<T> returns false when I call
toType.IsAssignableFrom(fromType)
because its type is Nullable<T> and is not the underlying type T.
I read here that GetType() should unbox the Nullable<T> so it returns T but if I call that on PropertyInfo.PropertyType I get ReflectedMemberInfo and not the type T im looking for.
I think im missing something obvious here, so I thought I would throw it open to SO to get some advice.
Anyone have any ideas?
Thanks,
Jamee
