protected async virtual Task <string> DownloadUpdateAsync(ApplicationInfo appInfo)
{
if (appInfo == null)
{
throw new ArgumentNullException("appInfo");
}
DirectoryInfo dir = new DirectoryInfo(UpdaterPaths.GetTempUpdatesFolder());
if (!dir.Exists)
{
dir.Create();
}
string pathToCopyUpdate = Path.Combine(dir.FullName, appInfo.Version.Md5hash);
using (var operationScope = new OperationScope(currentOperation, OperationStatus.Downloading))
{
try
{
using (var webClient = new WebClient())
{
using (var stream = await webClient.OpenReadTaskAsync(UpdaterPaths.GetUpdatePath(appInfo.Version.Path)))
{
int bytesTotal = Convert.ToInt32(webClient.ResponseHeaders["Content-Length"]);
using (FileStream fs = new FileStream(pathToCopyUpdate, FileMode.Create))
{
int bytesRead = 0;
int bytesLoaded = 0;
byte[] buffer = new byte[4096];
do
{
bytesRead = await stream.ReadAsync(buffer, 0, buffer.Length);
fs.Write(buffer, 0, bytesRead);
bytesLoaded += bytesRead;
double progress = (double)bytesLoaded / bytesTotal * 100;
ProgressReport((int)progress);
}while (bytesRead > 0);
}
}
}
return(pathToCopyUpdate);
}
catch
{
throw new UpdaterException(UpdaterError.DownloadingFailed);
}
}
}
private void Clear()
{
DirectoryInfo dir = new DirectoryInfo(UpdaterPaths.GetTempUpdatesFolder());
try
{
if (dir.Exists)
{
dir.Delete(true);
}
}
catch
{
}
}