private void btnThisMacOnline_Click(object sender, EventArgs e)
{
if (string.IsNullOrEmpty(txtMacToCheck.Text))
{
MessageBox.Show("MAC to check can't be empty", "Empty MAC");
return;
}
MACHandler macHandler = new MACHandler();
try
{
if (macHandler.IsOnline(MACHandler.ConvertToOnlyNumberMac(txtMacToCheck.Text)))
{
MessageBox.Show("The PC of this MAC is online now", "Online", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
else
{
MessageBox.Show("The PC of this MAC is offline now", "Offline", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
}
}
catch (ArgumentNullException ex)
{
MessageBox.Show($"{ex.Message}\n" + $"Error: {ex.InnerException.Message}", "This MAC Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
catch (Exception ex)
{
MessageBox.Show($"Error when ping: {ex.Message}", "Ping Error");
}
}
private bool SetNewMac(string newMac)
{
string newMacWithoutSeparator = MACHandler.ConvertToOnlyNumberMac(newMac);
RegistryKey rKey = null;
try
{
rKey = Registry.LocalMachine.OpenSubKey(@"SYSTEM\CurrentControlSet\Control\Class\{4d36e972-e325-11ce-bfc1-08002be10318}\0002", true);
rKey.SetValue("NetworkAddress", newMacWithoutSeparator);
rKey.Close();
return(true);
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
return(false);
}
finally
{
rKey.Close();
}
}