ProgressBar isn't updating
- by Nuru Salihu
I have a progressbar that that is show progress returned by the backgroundworker do_dowork event like below .
if (ftpSourceFilePath.Scheme == Uri.UriSchemeFtp)
{
FtpWebRequest objRequest = (FtpWebRequest)FtpWebRequest.Create(ftpSourceFilePath);
NetworkCredential objCredential = new NetworkCredential(userName, password);
objRequest.Credentials = objCredential;
objRequest.Method = WebRequestMethods.Ftp.DownloadFile;
FtpWebResponse objResponse = (FtpWebResponse)objRequest.GetResponse();
StreamReader objReader = new StreamReader(objResponse.GetResponseStream());
int len = 0;
int iProgressPercentage = 0;
FileStream objFS = new FileStream((cd+"\\VolareUpdate.rar"), FileMode.Create, FileAccess.Write, FileShare.Read);
while ((len = objReader.BaseStream.Read(buffer, 0, buffer.Length)) > 0)
{
objFS.Write(buffer, 0, len);
iRunningByteTotal += len;
double dIndex = (double)(iRunningByteTotal);
double dTotal = (double)buffer.Length;
double dProgressPercentage = (dIndex / dTotal);
iProgressPercentage = (int)(dProgressPercentage);
if (iProgressPercentage > 100)
{
iProgressPercentage = 100;
}
bw.ReportProgress(iProgressPercentage);
}
}
However, my progressbar does not update. While searching , i was told the UI thread is being blocked and then i thought may be passing the progress outside the loop will do the trick. then i change to this
if (ftpSourceFilePath.Scheme == Uri.UriSchemeFtp)
{
FtpWebRequest objRequest = (FtpWebRequest)FtpWebRequest.Create(ftpSourceFilePath);
NetworkCredential objCredential = new NetworkCredential(userName, password);
objRequest.Credentials = objCredential;
objRequest.Method = WebRequestMethods.Ftp.DownloadFile;
FtpWebResponse objResponse = (FtpWebResponse)objRequest.GetResponse();
StreamReader objReader = new StreamReader(objResponse.GetResponseStream());
int len = 0;
int iProgressPercentage = 0;
FileStream objFS = new FileStream((cd+"\\VolareUpdate.rar"), FileMode.Create, FileAccess.Write, FileShare.Read);
while ((len = objReader.BaseStream.Read(buffer, 0, buffer.Length)) > 0)
{
objFS.Write(buffer, 0, len);
iRunningByteTotal += len;
double dIndex = (double)(iRunningByteTotal);
double dTotal = (double)buffer.Length;
double dProgressPercentage = (dIndex / dTotal);
iProgressPercentage = (int)(dProgressPercentage);
if (iProgressPercentage > 100)
{
iProgressPercentage = 100;
}
// System.Threading.Thread.Sleep(2000);
iProgressPercentage++;
// SetText("F", true);
}
bw.ReportProgress(iProgressPercentage);
progressBar.Refresh();
}
However still didn't help. When i put break point in my workerprogresschanged event, it show the progressbar.value however does not update. I tried progressbar.update(0, i also tried sleeping the thread for a while in the loop still didn't help. Please any suggestion/help would be appreciated .
