I'm building a simple application that synchronizes a folder on the computer with a remote server. I use FileSystelWatcher to detect changes and WebClient to upload the file. The problem is that when I try to upload I get an exception saying the file is already in use. I checked all the processes but I can't find the one that is blocking. I also tried this File access error with FileSystemWatcher when multiple files are added to a directory but the problem remains the same. Here is how I declare the FileSysemWatcher:
private void InitFileWatcher()
{
try
{
watcher = new FileSystemWatcher();
watcher.Path = FileManager.getSyncDirPath();
watcher.EnableRaisingEvents = true;
watcher.IncludeSubdirectories = true;
watcher.Created += FileManager.FileCreated;
}
catch(Exception)
{
Console.WriteLine("Error");
}
}
FileManager.FileCreated method:
public static void FileCreated(object sender, FileSystemEventArgs e)
{
Console.WriteLine("File created: " + e.FullPath);
while (true)
{
try
{
using (Stream stream = System.IO.File.Open(e.FullPath, FileMode.Open, FileAccess.ReadWrite, FileShare.None))
{
if (stream != null)
{
FileUploader uploader = new FileUploader();
uploader.Upload(e.FullPath, new Uri("http://192.168.65.1/test/upload.php"));
break;
}
}
}
catch (FileNotFoundException ex)
{
System.Diagnostics.Trace.WriteLine(string.Format("Output file {0} not yet ready ({1})", e.FullPath, ex.Message));
}
catch (IOException ex)
{
System.Diagnostics.Trace.WriteLine(string.Format("Output file {0} not yet ready ({1})", e.FullPath, ex.Message));
}
catch (UnauthorizedAccessException ex)
{
System.Diagnostics.Trace.WriteLine(string.Format("Output file {0} not yet ready ({1})", e.FullPath, ex.Message));
}
Thread.Sleep(500);
}
}
And finally the upload method:
public void Upload(string file, Uri destination)
{
WebClient client = new WebClient();
client.Headers.Add("Content-Type", "binary/octet-stream");
client.UploadFileAsync(destination, "POST", file);
}
Thanks for the help ! :)
It won't let you upload the file because the file is already opened using System.IO.File.Open
If you are opening the file just to check its existence, then you can use
File.Exists(path);
You have to try below mentioned code.
public void Upload(string file, Uri destination)
{
using (WebClient client=new Webclient())
{
client.Headers.Add("Content-Type", "binary/octet-stream");
client.UploadFileAsync(destination, "POST", file);
}
}
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