//IMPORT DATA
        private void toolStripButtonImport_Click(object sender, EventArgs e)
        {
            ImportHost   frm    = new ImportHost(network);
            DialogResult result = frm.ShowDialog();

            if (result == DialogResult.OK)
            {
                network.AddRange(frm.network);
                network.Sort();
                frm.Close();
                ListUpdate();
            }
        }
 //IMPORT DATA
 private void toolStripButtonImport_Click(object sender, EventArgs e)
 {
     ImportHost frm = new ImportHost(network);
     DialogResult result = frm.ShowDialog();
     if (result == DialogResult.OK)
     {
         network.AddRange(frm.network);
         network.Sort();
         frm.Close();
         ListUpdate();
     }
 }