Extract the contents of zip file in the app_data folder

Question

User751840860 posted

in my mvc application, user uploads the .zip file into the app_data folder ( using the file upload control using httppostedfilebase) and then, I want to extract 

the same into the app_data folder and then read the contents of the files.

as a first step, i i tried to extract the files, but thats not happening.

in my case app_data is the folder, the user will upload into.

then, once the postedfile.saveas() is called, i wanna  extract the content into the same folder.( this is not happening) 

i tried with below code, but it throws an exception, when entry.fullname is called, so, currently i am not using this ziparchiventry class

foreach(ZipArchiveEntry entry in z.entries) //z is a zip file open in ZipArchiveMode.Read
{
        entry.ExtractToFile(entry.FullName);
}

[HttpPost]
        public ActionResult Index(HttpPostedFileBase postedFiles)
        {
            string pathforsaving = string.Empty;

            try
            {
                pathforsaving = Server.MapPath(@"~/App_Data/");

                if (postedFiles != null)
                {
                    string sfileName = Path.GetFileName(postedFiles.FileName);
                    string uploadFilePathandname = Path.Combine(pathforsaving,sfileName);

                    postedFiles.SaveAs(uploadFilePathandname);

string Zipfilecandidate = pathforsaving + sfileName;
string extracttoPath = pathforsaving;

///calal this unzip-extract method
UnzipReadPostedfile(postedFiles,Zipfilecandidate, extracttoPath);

}

.....
....
}

private void UnzipReadPostedfile(HttpPostedFileBase postedFiles, string mZipfileCandidate, string extractToPathAppdata)
        {
            try
            {
                //string startPath = @"c:\example\start";
                //string zipPath = @"c:\example\result.zip";
                //string extractPath = @"c:\example\extract";

                string startPath = @extractToPathAppdata;
                string zipFilename = mZipfileCandidate;
                string extractPath = @"c:\example\extract";

                //System.IO.Compression.ZipFile.CreateFromDirectory(startPath, zipFilename);
                System.IO.Compression.ZipFile.ExtractToDirectory(zipFilename, zipFilename);
            }
            catch(Exception expo)
            {
                string errmessage1 = expo.Message + "__" + expo.StackTrace;
            }


 

               

Answer 1

User-821857111 posted

but it throws an exception

Can you provide details of the exception?

Answer 2

User753101303 posted

Hi,

More likely a path or permission issue but exceptions are precisely intended to tell you what is the wrong thing that happens rather than having to guess.

Else we would have just a single GuessWhatHappenedException ;-)