protected void cmdSearch_Click(object sender, EventArgs e)
{
// get the list that we already have
String[] existingGadgetURLs = txtGadgetURLS.Text.Split(Environment.NewLine.ToCharArray());
List <String> existingFileNames = new List <String>();
foreach (String url in existingGadgetURLs)
{
existingFileNames.Add(GadgetSpec.GetGadgetFileNameFromURL(url));
}
try
{
// don't include any that we already have, based on file name
HttpWebRequest myReq = (HttpWebRequest)WebRequest.Create(txtNewGadgetsLocation.Text);
Uri newGadgetsUri = new Uri(txtNewGadgetsLocation.Text);
using (StreamReader sr = new StreamReader(myReq.GetResponse().GetResponseStream()))
{
bool newGadgetsFound = false;
String[] newGadgetHtmlCunks = sr.ReadToEnd().Split(new string[] { "<A HREF=\"" }, StringSplitOptions.None);
foreach (String newGadgetHtmlChunk in newGadgetHtmlCunks)
{
if (!newGadgetHtmlChunk.Contains("\">"))
{
continue;
}
String linkName = newGadgetHtmlChunk.Substring(0, newGadgetHtmlChunk.IndexOf("\">"));
if (linkName.EndsWith(".xml") && !existingFileNames.Contains(GadgetSpec.GetGadgetFileNameFromURL(linkName)))
{
txtGadgetURLS.Text += newGadgetsUri.Scheme + "://" + newGadgetsUri.Host + HttpUtility.UrlDecode(linkName) + Environment.NewLine;
newGadgetsFound = true;
}
}
if (!newGadgetsFound)
{
lblError.Text = "No new gadgets found at " + txtNewGadgetsLocation.Text;
}
}
}
catch (Exception ex)
{
lblError.Text = "Unable to read " + txtNewGadgetsLocation.Text;
}
}