private void btnEditPort_Click(object sender, EventArgs e)
 {
     if (lvPorts.SelectedItems.Count > 0)
     {
         var port = (Port) lvPorts.SelectedItems[0].Tag;
         var form = new PortForm();
         form.Port = port;
         if (DialogResult.OK == form.ShowDialog())
         {
             port = form.Port;
             lvPorts.SelectedItems[0].Tag = port;
             lvPorts.SelectedItems[0].SubItems[0].Text = port.name;
             lvPorts.SelectedItems[0].SubItems[1].Text = port.direction.ToString();
             OnPortChanged();
         }
     }
 }
 private void lvInterface_OnEdit()
 {
     if (lvInterface.HasSelected)
     {
         var form = new PortForm {Port = lvInterface.SelectedItems[0].Tag as Port};
         if (DialogResult.OK == form.ShowDialog())
         {
             Port port = form.Port;
             lvInterface.SelectedItems[0].Tag = port;
             lvInterface.SelectedItems[0].SubItems[0].Text = port.ToString();
         }
     }
 }
 private void btnAddPort_Click(object sender, EventArgs e)
 {
     var form = new PortForm();
     if (DialogResult.OK == form.ShowDialog())
     {
         AddPortToListView(form.Port);
     }
 }