private async Task DoWork(CancellationToken ct)
{
while (!ct.IsCancellationRequested)
{
try
{
var xmlContent = await _webAccessor.DownloadStringAsync(Constants.WallpaperInfoUrl);
ct.ThrowIfCancellationRequested();
var info = new BingWallpaperInfo(xmlContent);
if (info.PictureUrl != State.PictureUrl || !File.Exists(State.PictureFilePath))
{
try
{
await _webAccessor.DownloadFileAsync(info.PictureUrl, Constants.JpgFile);
ct.ThrowIfCancellationRequested();
if (_isJpgSupported)
{
ChangeWallpager(Constants.JpgFile);
}
else
{
ConvertJpgToBmp(Constants.JpgFile, Constants.BmpFile);
File.Delete(Constants.JpgFile);
ChangeWallpager(Constants.BmpFile);
}
State.PictureUrl = info.PictureUrl;
State.PictureFilePath = _isJpgSupported ? Constants.JpgFile : Constants.BmpFile;
State.Copyright = info.Copyright;
SaveState(State);
OnDownloadCompleted();
}
catch (Exception ex)
{
Log(ex.ToString());
try
{
foreach (var file in new[] { Constants.JpgFile, Constants.BmpFile })
{
if (File.Exists(file))
{
File.Delete(file);
}
}
}
catch (Exception ex2)
{
Log(ex2.ToString());
}
}
}
else
{
if (_firstTime)
{
ChangeWallpager(State.PictureFilePath);
}
}
}
catch (Exception ex)
{
Log(ex.ToString());
}
_firstTime = false;
await Task.Delay(TimeSpan.FromMinutes(10), ct);
}
}
void worker_DoWork(object sender, DoWorkEventArgs e)
{
if (_worker == null)
{
return;
}
if (_worker.CancellationPending)
{
e.Cancel = true;
return;
}
try
{
if (_worker.CancellationPending)
{
e.Cancel = true;
return;
}
var xmlContent = _webAccessor.DownloadString(Constants.WallpaperInfoUrl);
if (_worker.CancellationPending)
{
e.Cancel = true;
return;
}
var info = new BingWallpaperInfo(xmlContent);
if (info.PictureUrl != State.PictureUrl || !File.Exists(State.PictureFilePath))
{
using (var client = new WebClient())
{
try
{
client.DownloadFile(info.PictureUrl, Constants.JpgFile);
if (_worker.CancellationPending)
{
e.Cancel = true;
return;
}
if (_isJpgSupported)
{
ChangeWallpager(Constants.JpgFile);
}
else
{
ConvertJpgToBmp(Constants.JpgFile, Constants.BmpFile);
File.Delete(Constants.JpgFile);
ChangeWallpager(Constants.BmpFile);
}
State.PictureUrl = info.PictureUrl;
State.PictureFilePath = _isJpgSupported ? Constants.JpgFile : Constants.BmpFile;
State.StartDate = info.StartDate;
State.EndDate = info.EndDate;
State.Copyright = info.Copyright;
SaveState(State);
OnDownloadCompleted();
}
catch (Exception ex)
{
Log(ex.ToString());
try
{
foreach (var file in new[] { Constants.JpgFile, Constants.BmpFile })
{
if (File.Exists(file))
{
File.Delete(file);
}
}
}
catch (Exception ex2)
{
Log(ex2.ToString());
}
}
}
}
else
{
if (_firstTime)
{
ChangeWallpager(State.PictureFilePath);
}
}
}
catch (Exception ex)
{
Log(ex.ToString());
}
_firstTime = false;
GC.Collect();
}
