private void btnUpdateDelivery_Click(object sender, EventArgs e)
{
try {
frmAssignParcels assign = new frmAssignParcels(userID);
assign.Show();
} catch (NullReferenceException m) { MessageBox.Show("No entry selected." + m.Message); }
}
private void AllocateParcelsToVehiclesToolStripMenuItem_Click(object sender, EventArgs e)
{
frmAssignParcels maintain = new frmAssignParcels(getUserID());
frmParent parent = this;
maintain.MdiParent = parent;
maintain.Show();
}