private void Bytesdownloaded(ByteArgs e)
{
try
{
_downloadedBytes += e.downloaded;
int percentage = (_downloadedBytes * 100) / e.total;
_bw.ReportProgress(percentage < 100 ? percentage : 100);
}
catch (Exception ex)
{
string message = ex.ToString();
}
}
public static bool downloadFromWeb(string URL, string file, string targetFolder, object sender, DoWorkEventArgs e)
{
try
{
byte[] downloadedData = new byte[0];
//open a data stream from the supplied URL
WebRequest webReq = WebRequest.Create(URL + file);
WebResponse webResponse = webReq.GetResponse();
Stream dataStream = webResponse.GetResponseStream();
//Download the data in chuncks
byte[] dataBuffer = new byte[1024];
//Get the total size of the download
int dataLength = (int)webResponse.ContentLength;
//lets declare our downloaded bytes event args
ByteArgs byteArgs = new ByteArgs();
byteArgs.downloaded = 0;
byteArgs.total = dataLength;
//we need to test for a null as if an event is not consumed we will get an exception
if (bytesDownloaded != null)
bytesDownloaded(byteArgs);
BackgroundWorker worker = sender as BackgroundWorker;
//Download the data
MemoryStream memoryStream = new MemoryStream();
while (true)
{
if (worker.CancellationPending)
{
e.Cancel = true;
break;
}
//Let's try and read the data
int bytesFromStream = dataStream.Read(dataBuffer, 0, dataBuffer.Length);
if (bytesFromStream == 0)
{
byteArgs.downloaded = dataLength;
byteArgs.total = dataLength;
if (bytesDownloaded != null)
bytesDownloaded(byteArgs);
//Download complete
break;
}
else
{
//Write the downloaded data
memoryStream.Write(dataBuffer, 0, bytesFromStream);
byteArgs.downloaded = bytesFromStream;
byteArgs.total = dataLength;
if (bytesDownloaded != null) bytesDownloaded(byteArgs);
}
}
//Convert the downloaded stream to a byte array
downloadedData = memoryStream.ToArray();
//Release resources
dataStream.Close();
memoryStream.Close();
//Write bytes to the specified file
FileStream newFile = new FileStream(Path.Combine(targetFolder, file), FileMode.Create);
newFile.Write(downloadedData, 0, downloadedData.Length);
newFile.Close();
return true;
}
catch (Exception)
{
//We may not be connected to the internet
//Or the URL may be incorrect
return false;
}
}
private void Bytesdownloaded(ByteArgs e)
{
try
{
_downloadedBytes += e.downloaded;
int percentage = (_downloadedBytes * 100) / e.total;
_bw.ReportProgress(percentage < 100 ? percentage : 100);
}
catch (Exception ex)
{
string message = ex.ToString();
}
}
public static bool downloadFromWeb(string URL, string file, string targetFolder, object sender, DoWorkEventArgs e)
{
try
{
byte[] downloadedData = new byte[0];
//open a data stream from the supplied URL
WebRequest webReq = WebRequest.Create(URL + file);
WebResponse webResponse = webReq.GetResponse();
Stream dataStream = webResponse.GetResponseStream();
//Download the data in chuncks
byte[] dataBuffer = new byte[1024];
//Get the total size of the download
int dataLength = (int)webResponse.ContentLength;
//lets declare our downloaded bytes event args
ByteArgs byteArgs = new ByteArgs();
byteArgs.downloaded = 0;
byteArgs.total = dataLength;
//we need to test for a null as if an event is not consumed we will get an exception
if (bytesDownloaded != null)
{
bytesDownloaded(byteArgs);
}
BackgroundWorker worker = sender as BackgroundWorker;
//Download the data
MemoryStream memoryStream = new MemoryStream();
while (true)
{
if (worker.CancellationPending)
{
e.Cancel = true;
break;
}
//Let's try and read the data
int bytesFromStream = dataStream.Read(dataBuffer, 0, dataBuffer.Length);
if (bytesFromStream == 0)
{
byteArgs.downloaded = dataLength;
byteArgs.total = dataLength;
if (bytesDownloaded != null)
{
bytesDownloaded(byteArgs);
}
//Download complete
break;
}
else
{
//Write the downloaded data
memoryStream.Write(dataBuffer, 0, bytesFromStream);
byteArgs.downloaded = bytesFromStream;
byteArgs.total = dataLength;
if (bytesDownloaded != null)
{
bytesDownloaded(byteArgs);
}
}
}
//Convert the downloaded stream to a byte array
downloadedData = memoryStream.ToArray();
//Release resources
dataStream.Close();
memoryStream.Close();
//Write bytes to the specified file
FileStream newFile = new FileStream(Path.Combine(targetFolder, file), FileMode.Create);
newFile.Write(downloadedData, 0, downloadedData.Length);
newFile.Close();
return(true);
}
catch (Exception)
{
//We may not be connected to the internet
//Or the URL may be incorrect
return(false);
}
}