Question

I have a return a c# code to save a file in the server folder and to retrieve the saved file from the location. But this code is working fine in local machine. But after hosting the application in IIS, I can save the file in the desired location. But I can’t retrieve the file from that location using

Process.Start

What would be the problem? I have searched in google and i came to know it may be due to access rights. But I don’t know what would be exact problem and how to solve this? Any one please help me about how to solve this problem?

To Save the file:

string hfBrowsePath = fuplGridDocs.PostedFile.FileName;
if (hfBrowsePath != string.Empty)
{
    string destfile = string.Empty;
    string FilePath = ConfigurationManager.AppSettings.Get("SharedPath") + ConfigurationManager.AppSettings.Get("PODocPath") + PONumber + "\\\\";
    if (!Directory.Exists(FilePath.Substring(0, FilePath.LastIndexOf("\\") - 1)))
       Directory.CreateDirectory(FilePath.Substring(0, FilePath.LastIndexOf("\\") - 1));
    FileInfo FP = new FileInfo(hfBrowsePath);

    if (hfFileNameAutoGen.Value != string.Empty)
    {
        string[] folderfiles = Directory.GetFiles(FilePath);
        foreach (string fi in folderfiles)
        File.Delete(fi);
        //File.Delete(FilePath + hfFileNameAutoGen.Value);
    }
    hfFileNameAutoGen.Value = PONumber + FP.Extension;
    destfile = FilePath + hfFileNameAutoGen.Value;
    //File.Copy(hfBrowsePath, destfile, true);
    fuplGridDocs.PostedFile.SaveAs(destfile);
}

To retrieve the file:

String filename = lnkFileName.Text;
string FilePath = ConfigurationManager.AppSettings.Get("SharedPath") + ConfigurationManager.AppSettings.Get("PODocPath") + PONumber + "\\";
FileInfo fileToDownload = new FileInfo(FilePath + "\\" + filename);
if (fileToDownload.Exists)
     Process.Start(fileToDownload.FullName);

Answer 1

It looks like folder security issue. The folder in which you are storing the files, Users group must have Modify access. Basically there is user(not sure but it is IIS_WPG) under which IIS Process run, that user belongs to Users group, this user must have Modify access on the folder where you are doing read writes.

Suggestions

• Use Path.Combine to create folder or file path.
• You can use String.Format to create strings.
• Create local variables if you have same expression repeating itself like FilePath.Substring(0, FilePath.LastIndexOf("\\") - 1)

Hope this works for you.