// Starts the Info-Center after downloading the data
private void loadWorker_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e)
{
if (e.Cancelled)
{
Stop();
}
else if (e.Error != null)
{
Stop();
LogError("Error at loading data for Info-Center.", e.Error);
}
else if (e.Result is WebData)
{
Stop(false);
mPageIndex = 0;
var webData = e.Result as WebData;
mInfoCenterData = webData.InfoCenterData;
mUrl2Image = webData.Url2Image;
mWeatherData = webData.WeatherData;
if (mInfoCenterData != null && mInfoCenterData.Pages.Count > 0)
{
ShowPage(); // Start the timer immediately
mTimer.Start();
OnStatusChanged(Status.Running);
}
}
}
/// <summary>
/// Stops the InfoCenter and clears the data.
/// </summary>
public void Stop(bool sendEvent = true)
{
mLoadDataWorker.CancelAsync();
mTimer.Stop();
mInfoCenterData = null;
mWeatherData = null;
mUrl2Image.Clear();
if (sendEvent)
{
OnStatusChanged(Status.Stopped);
}
}
// Download data from web
private void loadWorker_DoWork(object sender, DoWorkEventArgs e)
{
var worker = (BackgroundWorker)sender;
var data = new WebData();
using (var reader = XmlReader.Create(AicSettings.Global.InfoCenterDataUrl))
{
data.InfoCenterData = InfoCenterData.Deserialize(reader);
}
if (worker.CancellationPending)
{
e.Cancel = true;
return;
}
if (AicSettings.Global.WeatherEnabled)
{
data.WeatherData = ReadWeatherData();
}
if (worker.CancellationPending)
{
e.Cancel = true;
return;
}
data.Url2Image = new Dictionary <string, ImageSource>();
foreach (var page in data.InfoCenterData.Pages)
{
if (!string.IsNullOrWhiteSpace(page.ImageUrl))
{
//BitmapImage bitmapImage = new BitmapImage(new Uri(page.ImageUrl));
try
{
BitmapImage bitmapImage = new BitmapImage();
bitmapImage.BeginInit();
bitmapImage.StreamSource = Network.DownloadStreamData(page.ImageUrl);
bitmapImage.EndInit();
bitmapImage.Freeze(); // Freezing is very important because the data is given to another thread
data.Url2Image[page.ImageUrl] = bitmapImage;
}
catch
{
data.Url2Image[page.ImageUrl] = null;
}
if (worker.CancellationPending)
{
e.Cancel = true;
return;
}
}
}
// Remove pages where the image could not be downloaded
data.InfoCenterData.Pages.RemoveAll(x => !string.IsNullOrWhiteSpace(x.ImageUrl) && data.Url2Image[x.ImageUrl] == null);
if (worker.CancellationPending)
{
e.Cancel = true;
return;
}
e.Result = data;
}