File does not have a stream with WriteToDirectory with .7zip

Question

at my job we use this method for an automated job that is trigger when .7zip files are put inside a specific folder:

public void Executer(ref string pChaineContexte, XdCuContexteTravail pContexte)
 {
 var dossierDepot = new XdCuFichier().ObtenirDepot(ref pChaineContexte, pContexte.NomChaine(ref pChaineContexte), "ReceptionSEEL");
 string[] fichiersZip = Directory.GetFiles(dossierDepot);
 foreach (var fichierZip in fichiersZip)
 {
 var fichierVide = string.Concat(dossierDepot, "\\", Path.GetFileNameWithoutExtension(fichierZip));
 Directory.CreateDirectory(fichierVide);
 using (var archive = ArchiveFactory.Open(fichierZip))
 {
 foreach (var entry in archive.Entries)
 {
 if (!entry.IsDirectory)
 entry.WriteToDirectory(fichierVide, new ExtractionOptions() { ExtractFullPath = true, Overwrite = true });
 }
 }
 }
 return;
}

The problem is that I get a lot of the time this error: "File does not have a stream". It does start the decompressing job but there is only one file that is in the new folder and nothing more. After we get the error that I mentionned.

I've read this: Issue partially extracting a 7-Zip archive using SharpCompress and I think this is a real issue.

How do you think I should change my code?

• mjwills: Side issue - you might be interested in Path.Combine.
• JonasH: Are you sure the file is not used by anything else when you are running your code? If you are using a FileWatcher you probably want to use the NotifyFilters.LastWrite filter. See this question
• equin0x80: Are you sure the file is complete when you receive the "new file" alert? Perhaps you're opening it while it is still being copied or uploaded, so you have an incomplete file that is not yet a valid ZIP file.