public Exception Download(DownloadInfo downloadInfo)
{
IDownload sourceFilter = null;
try
{
downloadThread = System.Threading.Thread.CurrentThread;
this.downloadResult = 0;
this.downloadFinished = false;
this.cancelled = false;
sourceFilter = (IDownload) new MPUrlSourceSplitter();
String url = UrlBuilder.GetFilterUrl(downloadInfo.Util, downloadInfo.Url);
IDownload downloadFilter = (IDownload)sourceFilter;
int result = downloadFilter.DownloadAsync(url, downloadInfo.LocalFile, this);
// throw exception if error occured while initializing download
Marshal.ThrowExceptionForHR(result);
while (!this.downloadFinished)
{
long total = 0;
long current = 0;
if (downloadFilter.QueryProgress(out total, out current) >= 0)
{
// succeeded or estimated value
downloadInfo.DownloadProgressCallback(total, current);
}
// sleep some time
System.Threading.Thread.Sleep(100);
if (this.cancelled)
{
downloadFilter.AbortOperation();
this.downloadFinished = true;
this.downloadResult = 0;
}
}
// throw exception if error occured while downloading
Marshal.ThrowExceptionForHR(this.downloadResult);
return(null);
}
catch (Exception ex)
{
return(ex);
}
finally
{
if (sourceFilter != null)
{
Marshal.ReleaseComObject(sourceFilter);
}
}
}