hMailServer.Administrator.ucMXQuery.copyToClipboard_Click C# (CSharp) Method

        private void copyToClipboard_Click(object sender, EventArgs e)
        {
            StringBuilder sbAllServers = new StringBuilder();
              foreach (ListViewItem item in listMailServers.SelectedItems)
              {
             if (sbAllServers.Length > 0)
                sbAllServers.AppendLine();

             sbAllServers.Append(item.Text);

              }

              if (sbAllServers.Length > 0)
            Clipboard.SetText(sbAllServers.ToString());
        }