Question

i have two collections of the same objects (same size list of course). items can be matched by an IEqualityComparer (matching on a unique property of the object).

I want to generate a new list out of these existing lists that just show the field differences of each of the “same” items from each collection. I was thinking of doing something like this

List<ObjectFieldDiff> list = CalcList(origList1, origList2);

where

public class ObjectFieldDiffs
{
        public List<FieldDiff> FieldDiffs; 
}

public class FieldDiff
{
      public string PropertyName;
      public string Object1Value;
      public string Object2Value;
}

does this make sense. any suggestions?

Answer 1

That seems reasonable, perhaps I would just add links to the two objects in question.

public class FieldDiff
{
  public object Object1;
  public object Object2;
  public string PropertyName;
  public object Object1Value;
  public object Object2Value;
}

Alternatively, if all of the properties are numeric, you could just store a difference:

public class FieldDiff
{
  public object Object1;
  public object Object2;
  public string PropertyName;
  public object ValueDifference;
}