private void RemoveUnnecessaryTabpagesAcceptFour(ref TabPage tp1, ref TabPage tp2, ref TabPage tp3, ref TabPage tp4)
{
try
{
foreach (TabPage tp in tcOperation.TabPages)
{
if (!IsTwoStringEqual(tp.ToString(), tp1.ToString()) && !IsTwoStringEqual(tp.ToString(), tp2.ToString()) &&
!IsTwoStringEqual(tp.ToString(), tp3.ToString()) && !IsTwoStringEqual(tp.ToString(), tp4.ToString()))
{
tcOperation.TabPages.Remove(tp);
}
}
}
catch
{
throw;
}
}