private void restockBttn_Click(object sender, EventArgs e)
 {
     if (restockform == null)
     {
         restockform             = new restockFrm();
         restockform.FormClosed += restockform_FormClosed;
     }
     restockform.Show(this);
     Hide();
 }
 private void inventoryDtgrdvw_CellDoubleClick(object sender, DataGridViewCellEventArgs e)
 {
     if (restockform == null)
     {
         restockform             = new restockFrm();
         restockform.FormClosed += restockform_FormClosed;
         restockform.Tag         = inventoryDtgrdvw[0, inventoryDtgrdvw.CurrentRow.Index].Value;
     }
     restockform.Show(this);
     Hide();
 }
 void restockform_FormClosed(object sender, FormClosedEventArgs e)
 {
     restockform = null;
     LoadIventory();
     Show();
 }