protected override void OnRedo()
{
base.OnRedo();
var field = DiffUtility.GetField(this.dataItem, this.fieldName);
DiffUtility.SetField(this.destItem, this.fieldName, field);
}
protected override void OnUndo()
{
base.OnUndo();
DiffUtility.SetField(this.destItem, this.fieldName, this.oldField);
}