private void binary(CultureInfo clone)
 {
     if (txtInput.Text != "")
     {
         decimal ingave = decimal.Parse(txtInput.Text, clone);
         if (cmbSelection.SelectedValue.ToString() == "Decimaal")
         {
             convertFromDecimal newDecimal = new convertFromDecimal();
             lblBinair.Content = newDecimal.binairNummer(ingave);
         }
     }
 }
        private void octaal(CultureInfo clone)
        {
            if (txtInput.Text != "")
            {
                decimal ingave = decimal.Parse(txtInput.Text, clone);
                if (cmbSelection.SelectedValue.ToString() == "Decimaal")
                {
                    convertFromDecimal newDecimal = new convertFromDecimal();
                    lblOctaal.Content = newDecimal.octaalNummer(ingave);
                }

                if (cmbSelection.SelectedValue.ToString() == "Binair" && Regex.IsMatch(ingave.ToString(), @"[0-1]") && !Regex.IsMatch(ingave.ToString(), @"[2-9]"))
                {
                    convertFromBinary newBinary = new convertFromBinary();
                    lblOctaal.Content = newBinary.octal(ingave);
                }
            }
        }