Question

If I have an object

public class Car {
  public List<UpdatePart> updatePartList {get; set;}

}

public class UpdatePart {
  public PartToModify PartToModify {get; set;}
  public string NewValue {get;set}
}

And the PartToModify is an enum:

public enum PartToModify {
   Engine,
   Tire, 
}

And I have a Part object:

public class Part {
  public string Engine {get;set;}
  public string Tire   {get;set;}
  public decimal price {get;set;}

}

How can I use reflection and for every property on Part that matches a enum in PartToModify, create a new UpdatePart object and select the correct enum where PartToModify == Part.Property and assigns the UpdatePart.NewValue the value of Part.Property.

I would something like:

var partProperties = partObj.GetType().GetProperties();
foreach (var property on updatePartProperties) {
  UpdatePartList.Add(MapProperties(partProperties, part));
}

 public UpdatePart MapProperties(PropertyInfo partProperties, Part partObj){
   //pseudo code
   var updatePart = new UpdatePart();
   foreach(var property on partProperties) {
      if (property.Name == <iterate through enum values until one is found>)
         updatePart.PartToModify = PartToModify.<somehow select value that matches property.name>
          updatePart.NewValue = property.GetValue(partObj, null);
   }

   return updatePart;
 }

Obviously you get the jiff of what I am trying to do, any thoughts? And no, this is not a school project. The whole “car” example was the quickest closest example I came up with to the actual objects, since I didn’t want to just write out what I was trying to accomplish, wanted to provide an example.

Answer 1

var partNames=Enum.GetNames(typeof(PartToModify));
var parts = from pi in partObj.GetType.GetProperties()
            where partNames.Contains(pi.Name)
            select new UpdatePart { 
                         PartToModify = (partToModify)Enum.Parse(typeof(PartToModify),pi.Name),
                         NewValue=pi.GetValue(partObj,null)
                       };
foreach (var part in parts) UpdateList.Add(part);