public void MarkAsCompleteButtonClickHandler(object sender, RoutedEventArgs e)
{
MarkAsCompleteClickArgs eventArgs = new MarkAsCompleteClickArgs();
eventArgs.Page = this;
MarkAsCompleteButtonClick?.Invoke(sender, eventArgs);
}
public void MarkAsCompleteButtonClick(object sender, MarkAsCompleteClickArgs e)
{
Task task;
task = TaskList.Find(x => x.TaskPage.Equals(e.Page));
task.MarkTaskAsComplete();
ChangePage(mainPage);
}