//日期
private void Date_SelectedDateChanged(object sender, SelectionChangedEventArgs e)
{
try
{
string item = Convert.ToDateTime(Date.SelectedDate.ToString()).ToString("yyyy/M/d");
PurchaseDao purchaseDao = new PurchaseDao();
purchaseDao.QueryDate(item, DataGrid_OrderView);
}
catch (Exception)
{
}
}