public static void StartDownloadAsync(DownloaderParams downloadInfo)
{
var worker = new BackgroundWorker();
worker.DoWork += DownloadDoWork;
worker.RunWorkerCompleted += DownloadComplete;
_activeWorkers.Add(worker);
worker.RunWorkerAsync(downloadInfo);
}
private static string GetFile(DownloaderParams info)
{
string writePath = info.FullLocalPath;
if (!IsValidPath(writePath))
{
Debug.Fail("Generated invalid paths.");
return null;
}
string directory = Path.GetDirectoryName(writePath);
//if (WriteAccess(writePath))
//{
// Debug.WriteLine("I have write access");
//}
//else
//{
// Debug.WriteLine("I don't have write access");
//}
if (!FileSystem.DirectoryExists(directory))
{
FileSystem.CreateDirectory(directory);
}
//check for existence of local file
bool localFileExists = FileSystem.FileExists(writePath);
if (localFileExists)
{
return writePath;
}
var webRequest = new WebRequest();
IHttpWebResponse response;
IHttpWebRequest request = webRequest.Create(new Uri(info.RemoteUrl));
try
{
response = request.GetResponse();
}
catch (WebException ex)
{
response = ex.Response as System.Net.HttpWebResponse == null
? null
: new HttpWebResponse(ex.Response as System.Net.HttpWebResponse);
}
if (response == null)
{
return null;
}
if (response.StatusCode == HttpStatusCode.OK)
{
ReadResponseToFileStream(writePath, response);
return writePath;
}
return null;
}
public static void Download(DownloaderParams downloadInfo)
{
string localPath = GetFile(downloadInfo);
}
