private void buttonExport_Click(object sender, EventArgs e)
{
SaveFileDialog sfd = new SaveFileDialog();
sfd.Title = "选择保存地址";
sfd.InitialDirectory = "F://";
sfd.FileName = packName;
sfd.Filter = "Csv files (*.csv)|*.csv|All files (*.*)|*.*";
sfd.RestoreDirectory = true;
if (sfd.ShowDialog() == System.Windows.Forms.DialogResult.OK)
{
pack.ExportPackData(sfd.FileName);
}
sfd.Dispose();
}