//根据选中日期画图
private void DrawTheDay(object sender, RoutedEventArgs e)
{
ClearCanvas();
try
{
DrawPre.getListd(viewModel.NotesList, calendar.SelectedDate.Value);
Draw();
}
catch (System.InvalidOperationException)
{
Xceed.Wpf.Toolkit.MessageBox.Show("必须要选中某个日期！");
}
}
//当前日期画图
private void DrawDay(object sender, RoutedEventArgs e)
{
ClearCanvas();
DrawPre.getListd(viewModel.NotesList, DateTime.Now);
Draw();
}