private void AddressList_Validating(object sender, System.ComponentModel.CancelEventArgs e)
{
bool isValid = false; // Assume that the address is invalid until proven otherwise
TL.LogMessage("AddressList_Validating", $"Address item: {addressList.Text}");
// Test whether the supplied IP address is valid and, if it is an IPv6 address, test whether it is in canonical form
if (IPAddress.TryParse(addressList.Text.Trim(), out IPAddress ipAddress)) // The host name is an IP address
{
if (ipAddress.AddressFamily == AddressFamily.InterNetworkV6) // This is an IPv6 address
{
TL.LogMessage("AddressList_Validating", $"Address item: {addressList.Text} is an IPv6 address");
if (addressList.Text.Trim().StartsWith("[") & addressList.Text.Trim().EndsWith("]"))
{
TL.LogMessage("AddressList_Validating", $"Address item: {addressList.Text} is a canonical IPv6 address");
// The IP v6 address is already in canonical form, no action required
isValid = true;
}
else // The IPv6 address is not in canonical form so we need to add square brackets
{
TL.LogMessage("AddressList_Validating", $"Address item: {addressList.Text} is NOT a canonical IPv6 address");
SetupErrorProvider.SetError(addressList, "IPv6 addresses must be in canonical form i.e. start with [ and end with ].");
}
}
else // This is an IPv4 address
{
// The IP v4 address is already in canonical form, no action required
isValid = true;
}
}
else // The host name is either an invalid IP address or a string so validate this
{
TL.LogMessage("AddressList_Validating", $"Address item: {addressList.Text} is NOT a valid IP address");
MatchCollection matches = validHostnameRegex.Matches(addressList.Text);
if (matches.Count == 0)
{
TL.LogMessage("AddressList_Validating", $"Address item: {addressList.Text} is NOT a valid IP address or Host Name");
SetupErrorProvider.SetError(addressList, "Not a valid IP address or host name.");
}
else
{
TL.LogMessage("AddressList_Validating", $"Address item: {addressList.Text} is a valid Host Name");
isValid = true;
}
}
if (isValid)
{
SetupErrorProvider.Clear();
btnOK.Enabled = true;
}
else
{
btnOK.Enabled = false;
}
}
private void AddressList_Validating(object sender, System.ComponentModel.CancelEventArgs e)
{
bool isValid = false;
if (IsIpAddress(addressList.Text)) // The host name is an IP address so test whether this is valid
{
MatchCollection matches = validIpAddressRegex.Matches(addressList.Text);
if (matches.Count == 0)
{
SetupErrorProvider.SetError(addressList, "IP addresses can only contain digits and the point character in the form WWW.XXX.YYY.ZZZ.");
}
else
{
isValid = true;
}
}
else // The host name is a string rather than an IP address so validate this
{
MatchCollection matches = validHostnameRegex.Matches(addressList.Text);
if (matches.Count == 0)
{
SetupErrorProvider.SetError(addressList, "Not a valid host name.");
}
else
{
isValid = true;
}
}
if (isValid)
{
SetupErrorProvider.Clear();
btnOK.Enabled = true;
}
else
{
btnOK.Enabled = false;
}
}
