protected void fillComboBox_NetworkMask()
{
if (ip == null || ip.getIp() == null)
{
return;
}
netMaskComboBox.Items.Clear();
if (ip.getNetworkClassPrefix() == -1)
{
netMaskComboBox.Items.Add("");
return;
}
int startPrefix = ip.getNetworkClassPrefix();
// first is Networkclass
netMaskComboBox.Items.Add(ip.getNetworkMaskByPrefix(startPrefix));
startPrefix++;
if (!ip.isFirstSubNetBit())
{
startPrefix++;
}
for (int i = startPrefix; i <= 30; i++)
{
netMaskComboBox.Items.Add(ip.getNetworkMaskByPrefix(i));
}
}