private void GetFileFromServer(object state)
{
try
{
Abc abc = state as Abc;
var request = (HttpWebRequest)WebRequest.Create(Url);
request.AddRange(abc.From, abc.To);
using (var response = request.GetResponse())
using (var stream = response.GetResponseStream())
using (var output = File.Create(abc.Path))
{
stream.CopyTo(output);
progressBar.Minimum = 0;
double receive = (double)output.Length;
Percentage = receive / FileSize * 100;
Interlocked.Add(ref location, (int)Percentage);
Invoke(new Action(() =>
{
lblStatus.Text = $"Downloaded {string.Format("{0}%", location)}";
progressBar.Value = int.Parse(Math.Truncate((double)location).ToString());
progressBar.Update();
s++;
}));
}
if (s == inputFilePaths.Length)
{
CombineMultipleFilesIntoSingleFile();
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message, "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
private void btnStart_Click(object sender, EventArgs e)
{
if (!string.IsNullOrEmpty(txtAddress.Text) && !string.IsNullOrWhiteSpace(txtAddress.Text) &&
!string.IsNullOrEmpty(txtThreadCount.Text) && !string.IsNullOrWhiteSpace(txtThreadCount.Text) &&
!string.IsNullOrEmpty(txtFileName.Text) && !string.IsNullOrWhiteSpace(txtFileName.Text) &&
!string.IsNullOrEmpty(txtFileFormat.Text) && !string.IsNullOrWhiteSpace(txtFileFormat.Text))
{
try
{
Url = txtAddress.Text;
FileName = txtFileName.Text;
Path = txtPath.Text + '/' + FileName + '.' + txtFileFormat.Text;
int count = int.Parse(txtThreadCount.Text);
inputFilePaths = new string[count];
var webRequest = HttpWebRequest.Create(Url);
webRequest.Method = "HEAD";
int fileSizeInByte;
using (var webResponse = webRequest.GetResponse())
{
var fileSize = webResponse.Headers.Get("Content-Length");
FileSize = fileSizeInByte = Convert.ToInt32(fileSize);
}
int packetSize = fileSizeInByte / (count - 1);
for (int i = 0; count > 0; i += packetSize)
{
inputFilePaths[inputFilePaths.Length - count] = FileName + (inputFilePaths.Length - count);
Abc abc = new Abc(i, i + packetSize - 1, FileName + (inputFilePaths.Length - count));
if (count == 1)
{
abc.To = fileSizeInByte;
}
WaitCallback workItem = new WaitCallback(GetFileFromServer);
ThreadPool.QueueUserWorkItem(workItem, abc);
count--;
}
}
catch (ArgumentNullException ex)
{
MessageBox.Show(ex.Message, "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
catch (ArgumentException ex)
{
MessageBox.Show(ex.Message, "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
catch (Exception ex)
{
MessageBox.Show(ex.Message, "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
else
{
MessageBox.Show("Укажите необходимые данные", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}