public void SetSelection(TTrackedModel item)
{
if ((item == null && this.SelectedItem != null) || (item != null && this.SelectedItem == null) ||
(item != null && this.SelectedItem != null && !item.Id.Equals(this.SelectedItem.Id)))
{
var newStartingIndex = -1;
if (item != null)
{
newStartingIndex = IndexOf(item.Id);
if (newStartingIndex == -1)
{
// Cannot find selected item in tracked list.
// Possible error condition.
return;
}
}
var oldStartingIndex = -1;
if (this.SelectedItem != null)
{
oldStartingIndex = IndexOf(this.SelectedItem.Id);
}
var oldSelectedItem = this.SelectedItem;
this.SelectedItem = item;
NotifyTrackedListChanged(ChangedEventArgs.CreateSelectionChangedEventArgs(item, oldSelectedItem, newStartingIndex, oldStartingIndex));
}
}