private void ManageSupplier_Click(object sender, RoutedEventArgs e)
{
SupplierManagement sm = new SupplierManagement();
sm.ShowDialog();
LoadData();
}
//供应商信息
private void MenuSupplierInfo_Click(object sender, RoutedEventArgs e)
{
SupplierManagement supplier = new SupplierManagement();
supplier.ShowDialog();
}