private void calcSubnet()
{
if (cbUseSubnet.Checked == true)
{
if (IpHelpers.isValidIP(tbSubnetMask.Text))
{
btnStart.Enabled = true;
tbIPStart.Enabled = true;
tbIPEndNetwork.Enabled = true;
tbIPEnd.Enabled = true;
ipSeg = new IPSegment(tbIPStart.Text, tbSubnetMask.Text);
tbIPStart.Text = ipSeg.FirstIP.ToIpString();
tbIPEndNetwork.Text = IPFirstPart(ipSeg.LastIP.ToIpString());
tbIPEnd.Text = IPLastPart(ipSeg.LastIP.ToIpString());
tbIPEndNetwork.ReadOnly = false;
}
else
{
btnStart.Enabled = false;
tbIPStart.Enabled = false;
tbIPEndNetwork.Enabled = false;
tbIPEnd.Enabled = false;
}
}
}
private void btStart_Click(object sender, EventArgs e)
{
if (isNumeric(tbTimeOut.Text) == true)
{
port = 0;
btnStart.Enabled = false;
btnStop.Enabled = true;
tbIPStart.Enabled = false;
tbIPEnd.Enabled = false;
cbNIC.Enabled = false;
cbUseSubnet.Enabled = false;
cbNIC.Enabled = false;
rbNames.Enabled = false;
rbDescription.Enabled = false;
tbPort.Enabled = false;
ips.Clear();
timeout = Convert.ToInt32(tbTimeOut.Text);
GetHosts();
dataGridView1.DataSource = ips;
DataGridViewColumnSelector dgvCS = new DataGridViewColumnSelector();
dgvCS.DataGridView = dataGridView1;
dataGridView1.ReadOnly = true;
dataGridView1.AllowUserToAddRows = false;
dataGridView1.Columns["Hostname"].Visible = false;
dataGridView1.Columns["First_Seen"].DefaultCellStyle.Format = "dd/MM HH:mm:ss";
dataGridView1.Columns["Last_Seen"].DefaultCellStyle.Format = "dd/MM HH:mm:ss";
dataGridView1.Columns["Last_Checked"].DefaultCellStyle.Format = "dd/MM HH:mm:ss";
dataGridView1.Columns["Last_Checked"].Visible = false;
dataGridView1.Columns["RunningCheck"].Visible = false;
dataGridView1.Columns["CountChecks"].Visible = false;
timer1.Start();
}
else
{
MessageBox.Show("Enter valid Timeout!");
}
if (tbPort.Text != "" && IpHelpers.IsValidPort(tbPort.Text) == true)
{
port = Convert.ToInt32(tbPort.Text);
dataGridView1.Columns["PortOpen"].Visible = true;
}
else if (tbPort.Text != "" && IpHelpers.IsValidPort(tbPort.Text) == false)
{
MessageBox.Show("Enter valid Port or leave empty");
dataGridView1.Columns["PortOpen"].Visible = false;
}
else
{
dataGridView1.Columns["PortOpen"].Visible = false;
}
}
private bool CheckFirstIP()
{
string startIP = tbIPStart.Text;
if (IpHelpers.isValidIP(startIP) && startIP != "")
{
if (ipSeg.isInNetwork(startIP) == true)
{
firstIP = startIP;
return(true);
}
return(false);
}
return(false);
}
private bool CheckLastIP()
{
string endIP = tbIPEndNetwork.Text + tbIPEnd.Text;
if (IpHelpers.isValidIP(endIP) && tbIPEndNetwork.Text != "" && tbIPEnd.Text != "")
{
if (ipSeg.isInNetwork(endIP) == true)
{
lastIP = endIP;
return(true);
}
return(false);
}
return(false);
}
private void GetHosts()
{
ips.Clear(); //Clear Hosts List
if (IpHelpers.isValidIP(tbIPStart.Text) == true && IpHelpers.isValidIP(tbIPEnd.Text) && cbUseSubnet.Checked == false)
{
string ipStart = tbIPStart.Text;
string ipEnd = tbIPEnd.Text;
string ipNet = IPFirstPart(ipStart);
int ipStartSub = Convert.ToInt32(IPLastPart(ipStart));
int ipEndSub = Convert.ToInt32(ipEnd);
if (ipStartSub <= ipEndSub)
{
for (int i = ipStartSub; i <= ipEndSub; i++)
{
IPAddress newIP = IPAddress.Parse(ipNet + i.ToString());
Host newHost = new Host();
newHost.IP_Address = newIP;
newHost.CountChecks = 0;
newHost.RunningCheck = false;
ips.Add(newHost);
}
}
}
if (IpHelpers.isValidIP(tbIPStart.Text) == true && cbUseSubnet.Checked == true)
{
foreach (var host in ipSeg.Hosts())
{
if (host >= IpHelpers.ParseIp(firstIP) && host <= IpHelpers.ParseIp(lastIP))
{
//Prevent ip .0 and .255 in List
if (Convert.ToInt32(IPLastPart(host.ToIpString())) > 0 && Convert.ToInt32(IPLastPart(host.ToIpString())) < 255)
{
IPAddress newIP = IPAddress.Parse(host.ToIpString());
Host newHost = new Host();
newHost.IP_Address = newIP;
newHost.CountChecks = 0;
newHost.RunningCheck = false;
ips.Add(newHost);
}
}
}
}
}
private void tbIPStart_TextChanged(object sender, EventArgs e)
{
if (IpHelpers.isValidIP(tbIPStart.Text) == true) //Fill Network for LastIP
{
//Check if First end Last IP is in Subnet
ipSeg = new IPSegment(tbIPStart.Text, tbSubnetMask.Text);
if (cbUseSubnet.Checked == true)
{
if (CheckFirstIP() == true)
{
btnStart.Enabled = true;
tbIPEndNetwork.Enabled = true;
tbIPEnd.Enabled = true;
}
else
{
btnStart.Enabled = false;
tbIPEndNetwork.Enabled = false;
tbIPEnd.Enabled = false;
}
}
else
{
if (cbUseSubnet.Enabled == true)
{
tbIPEndNetwork.Text = IPFirstPart(tbIPStart.Text);
}
btnStart.Enabled = true;
}
}
else
{
tbIPEndNetwork.Enabled = false;
tbIPEnd.Enabled = false;
btnStart.Enabled = false;
}
}
