public static IP_Address get_SubnetNetwork(IP_Address ip = null, int cidr = 0)
{
IP_Address temp_mask;
byte[] bit_Decimal = new byte[] { 0, 128, 192, 224, 240, 248, 252, 254, 255 };
byte firstOctet = ip.first_Octet;
byte secondOctet = ip.second_Octet;
byte thirdOctet = ip.third_Octet;
byte fourthOctet = ip.fourth_Octet;
if (cidr <= 8)
{
int pwr = cidr;
byte first = bit_Decimal[pwr];
temp_mask = new IP_Address(first, 0, 0, 0);
}
else if (cidr <= 16 && cidr > 8)
{
int pwr = cidr - 8;
byte second = bit_Decimal[pwr];
temp_mask = new IP_Address(255, second, 0, 0);
}
else if (cidr <= 24 && cidr > 16)
{
int pwr = cidr - 16;
byte third = bit_Decimal[pwr];
temp_mask = new IP_Address(255, 255, third, 0);
}
else if (cidr <= 32 && cidr > 24)
{
int pwr = cidr - 24;
byte fourth = bit_Decimal[pwr];
temp_mask = new IP_Address(255, 255, 255, fourth);
}
else
{
temp_mask = new IP_Address(0, 0, 0, 0);
}
IP_Address subnet = new IP_Address((byte)(temp_mask.first_Octet & ip.first_Octet),
(byte)(temp_mask.second_Octet & ip.second_Octet),
(byte)(temp_mask.third_Octet & ip.third_Octet),
(byte)(temp_mask.fourth_Octet & ip.fourth_Octet));
return(subnet);
}
public string get_class(IP_Address IP)
{
if (IP.first_Octet <= 126 && IP.first_Octet > 1)
{
return("Class A");
}
if (IP.first_Octet <= 191 && IP.first_Octet > 128)
{
return("Class B");
}
if (IP.first_Octet <= 223 && IP.first_Octet > 192)
{
return("Class C");
}
if (IP.first_Octet == 127)
{
return("LoopBack");
}
return("INVALID IP ADDRESS");
}
private void cal_Subnet_Click(object sender, RoutedEventArgs e)
{
ComboBoxItem a = (ComboBoxItem)IP1stOctet.SelectedItem;
byte ip_1st_octet = Byte.Parse((string)a.Content);
a = (ComboBoxItem)IP2ndOctet.SelectedItem;
byte ip_2nd_octet = Byte.Parse((string)a.Content);
a = (ComboBoxItem)IP3rdOctet.SelectedItem;
byte ip_3rd_octet = Byte.Parse((string)a.Content);
a = (ComboBoxItem)IP4thOctet.SelectedItem;
byte ip_4th_octet = Byte.Parse((string)a.Content);
int cidr = int.Parse((string)((ComboBoxItem)CIDRcomboBox.SelectedItem).Content);
IP_Address ip = new IP_Address(ip_1st_octet, ip_2nd_octet, ip_3rd_octet, ip_4th_octet);
IP_Address subnet = IP_config.get_SubnetNetwork(ip, cidr);
string sub = String.Format("{0}.{1}.{2}.{3}", subnet.first_Octet,
subnet.second_Octet, subnet.third_Octet, subnet.fourth_Octet);
SubnetTextBlock.Text = sub;
}