public void ShowInfo(PadInfo info)
{
PadName.text = info.PadName;
Line1.Setup(info.Attributes[0]);
Line2.Setup(info.Attributes[1]);
Line3.Setup(info.Attributes[2]);
Description.text = info.Description;
}
void InternalAsyncGetVersionFromPad(object state)
{
Uri padUri = ((CheckerState)state).PadUri;
Version currentVersion = ((CheckerState)state).CurrentVersion;
try
{
PadInfo padInfo = GetInfoFromPad(padUri);
bool isNewVersionDetected = currentVersion.CompareTo(padInfo.Version) < 0;
if (null != VersionDetected)
{
VersionDetected(this, new VersionDetectedEventArgs(isNewVersionDetected, padInfo.Version));
}
string localMsiFileName = null;
if (isNewVersionDetected &&
null != padInfo.DownloadUri && !string.IsNullOrEmpty(padInfo.VersionedFileName))
{
localMsiFileName =
DownloadMsi(padInfo.DownloadUri,
GetPackageNameFromRegistry(productId, padInfo.VersionedFileName));
}
if (null != VersionRetrieved)
{
VersionRetrieved(this,
new VersionRetrievedEventArgs(isNewVersionDetected, padInfo.Version, localMsiFileName));
}
}
catch (WebException)
{
// silent failure in case of network failure.
}
catch (InvalidOperationException)
{
// silent failure in case of PAD parsing failure.
}
catch (Exception)
{
if (Debugger.IsAttached)
{
Debugger.Break();
}
}
}
/// <summary>Retrieve the version number contained in an online PAD file.</summary>
internal static PadInfo GetInfoFromPad(Uri padUri)
{
// HACK: if network connection is down, this method must fail in a clean manner.
// For ex, an 'null' value could be returned.
// retrieving the latest version number from the published PAD file
using (XmlTextReader reader = new XmlTextReader(padUri.ToString()))
{
try
{
XmlDocument document = new XmlDocument();
document.Load(reader);
PadInfo padInfo = new PadInfo();
XmlNode node = document.SelectSingleNode(@"/XML_DIZ_INFO/Program_Info/Program_Version");
if (null != node)
{
Version version = null;
if (TryParseVersion(node.InnerText, out version))
{
padInfo.Version = version;
}
else
{
throw new InvalidOperationException("Version number cannot be parsed.");
}
}
node = document.SelectSingleNode(@"/XML_DIZ_INFO/Program_Info/File_Info/Filename_Versioned");
if (null != node)
{
padInfo.VersionedFileName = node.InnerText;
}
else
{
node = document.SelectSingleNode(@"/XML_DIZ_INFO/Program_Info/Program_Name");
if (node != null)
{
string name = node.InnerText;
node = document.SelectSingleNode(@"/XML_DIZ_INFO/Program_Info/Program_Version");
if (node != null)
{
string version = node.InnerText;
padInfo.VersionedFileName = (name + version.Replace(".", "")).Replace(" ", "") + ".msi";
}
}
}
node = document.SelectSingleNode(@"/XML_DIZ_INFO/Web_Info/Download_URLs/Primary_Download_URL");
if (null != node)
{
try
{
padInfo.DownloadUri = new Uri(node.InnerText);
}
catch (UriFormatException)
{
padInfo.DownloadUri = null;
}
}
return padInfo;
}
catch (XmlException)
{
throw new InvalidOperationException("PAD file does not appear to be correct XML.");
}
}
}
public static extern bool _GetPadInfo([MarshalAs(UnmanagedType.LPStruct)][Out] PadInfo lplf, int PadIndex);
