private void cmdAdd_Click(object sender, System.EventArgs e)
{
PortMapping mapping = FrmAddPort.GetPortMapping(this);
if (mapping == null)
{
return;
}
foreach (ListViewItem existingItem in listPorts.Items)
{
PortMapping addedMapping = (PortMapping)existingItem.Tag;
if (!addedMapping.Equals(mapping))
{
continue;
}
MessageBox.Show($"Port number {mapping.Port} is already added to the list.", "Port exists!", MessageBoxButtons.OK,
MessageBoxIcon.Exclamation);
return;
}
ListViewItem item = new ListViewItem(mapping.ToString())
{
Tag = mapping
};
listPorts.Items.Add(item);
}
public static PortMapping GetPortMapping(Form parent)
{
FrmAddPort addPort = new FrmAddPort();
if (addPort.ShowDialog(parent) == DialogResult.OK)
{
MappingProtocol protocol = MappingProtocol.Tcp;
if (addPort.rbUdp.Checked)
{
protocol = MappingProtocol.Udp;
}
else if (addPort.rbTcpUdp.Checked)
{
protocol = MappingProtocol.Both;
}
return(new PortMapping()
{
Port = Convert.ToInt32(addPort.numPort.Value),
Protocol = protocol
});
}
return(null);
}