private void SelectedIndexChanged(object sender, EventArgs e)
        {
            var listView = (ListView)sender;

            if (0 < listView.SelectedItems.Count)
            {
                var header = listView.SelectedItems[0].Text;
                buttonEdit.Enabled = buttonRemove.Enabled = HttpHeaderProvider.IsEditable(header);
            }
        }
 public void SetHttpHeaders(WebHeaderCollection headers)
 {
     listViewHeaders.BeginUpdate();
     try
     {
         listViewHeaders.Items.Clear();
         foreach (string header in headers)
         {
             var foreColor = Color.FromKnownColor(HttpHeaderProvider.IsEditable(header) ? KnownColor.WindowText : KnownColor.InactiveCaption);
             var item      = new ListViewItem(new[] { header, headers[header] }, -1, foreColor, listViewHeaders.BackColor, null);
             listViewHeaders.Items.Add(item);
         }
     }
     finally
     {
         listViewHeaders.EndUpdate();
     }
 }