public void Download()
{
DownloadContext downloadcontext = new DownloadContext(Path.Combine(_directory, tempFileName));
try
{
using (var clien = new HttpClient())
{
if (downloadcontext.StartBytes > 0)
{
clien.DefaultRequestHeaders.Range = new RangeHeaderValue(downloadcontext.StartBytes, null);
}
using (var response = clien.GetAsync(this._url, HttpCompletionOption.ResponseHeadersRead, CancellationToken.None).Result)
{
StartDownload(response, downloadcontext);
_fileName = downloadcontext.GetFileName(response.Content.Headers);
}
}
FinishedDownload(downloadcontext);
}
catch (Exception e)
{
var msg = e.Message;
}
finally
{
if (downloadcontext.CurrentStream != null)
{
downloadcontext.CurrentStream.Dispose();
}
}
}
private void FinishedDownload(DownloadContext context)
{
context.Dispose();
FileReName();
if (fileloaded != null)
{
fileloaded.Invoke();
}
}
private void StartDownload(HttpResponseMessage response, DownloadContext downloadcontext)
{
using (var stream = response.Content.ReadAsStreamAsync().Result)
{
byte[] bufferArrray = new byte[_bufferSize];
downloadcontext.SetFileSize(response.Content.Headers);
int readSize = stream.Read(bufferArrray, 0, _bufferSize);
while (readSize > 0)
{
downloadcontext.StartBytes += readSize;
downloadcontext.CurrentStream.Write(bufferArrray, 0, readSize);
readSize = stream.Read(bufferArrray, 0, _bufferSize);
fileloading.Invoke(downloadcontext.StartBytes, (long)downloadcontext.FileSize);
}
}
}
