private void btnCancel_Click(object sender, EventArgs e)
{
Status = UpdateStatus.Cancel;
txtOutput.Text += string.Format("Canceling update...{0}", Environment.NewLine);
thread.CancelAsync();
revertFiles();
Close();
}
void thread_DoWork(object sender, DoWorkEventArgs e)
{
try
{
long fileLength = updateService.StartDownload(currentFile.Id);
byte[] fileData = new byte[0];
while (fileData.Length < fileLength && !Status.Equals(UpdateStatus.Error) && !Status.Equals(UpdateStatus.Cancel))
{
var buffer = updateService.Download(currentFile.Id, fileData.Length);
var concat = new byte[fileData.Length + buffer.Length];
Buffer.BlockCopy(fileData, 0, concat, 0, fileData.Length);
Buffer.BlockCopy(buffer, 0, concat, fileData.Length, buffer.Length);
fileData = new byte[concat.Length];
concat.CopyTo(fileData, 0);
double t1 = (double)fileData.Length / fileLength;
int done = Convert.ToInt32(t1 * 100);
thread.ReportProgress(done);
}
//read old file into memory incase there is a error, delete it
string path = Path.GetDirectoryName(Application.ExecutablePath) + currentFile.InstallPath;
path = Path.Combine(path, currentFile.FileName);
try
{
var oldFileStream = File.Open(path, FileMode.Open, FileAccess.Read);
var oldFileData = new byte[oldFileStream.Length];
oldFileStream.Read(oldFileData, 0, (int)oldFileStream.Length);
oldFileStream.Close();
File.Delete(path);
OldFiles.Add(new BackupFile {
FileData = oldFileData, FilePath = path
});
}
catch (Exception)
{
}
//write new file to hd
var fs = new FileStream(path, FileMode.CreateNew, FileAccess.Write);
fs.Write(fileData, 0, fileData.Length);
fs.Close();
FileIds.Remove(currentFile.Id);
}
catch (Exception ex)
{
//write all old files back to hd and error out
thread.ReportProgress(0);
thread.CancelAsync();
Status = UpdateStatus.Error;
}
}
