/// <summary>
/// Find a tasklist by ID and then return its index
/// </summary>
/// <param name="observableCollection"></param>
/// <param name="taskList"></param>
/// <returns></returns>
private int IndexOf(ObservableCollection<TaskList> lists, TaskList taskList)
{
try
{
TaskList taskListRef = lists.Single(tl => tl.ID == taskList.ID);
return lists.IndexOf(taskListRef);
}
catch (Exception)
{
return -1;
}
}