private void MessengerStatic_TaskItemWindowOpened(object obj)
{
TaskItemModel selectedItem = (TaskItemModel)obj;
TaskItemWindow taskItemWin = new TaskItemWindow(selectedItem);
taskItemWin.Show();
}
private void Button_Click(object sender, RoutedEventArgs e)
{
TaskItemWindow taskItemWin = new TaskItemWindow();
taskItemWin.Show();
}