CODEWITHSUNDEEP
asp.netpdfreadfile
Zain Abbas
Zain Abbas

Reputation: 109

System.IO.File.ReadAllBytes Access to the path denied

Am running the project on the visual studio 2015, When I tried to read the PDF its giving me the following error;

Access to the path 'E:\FILE\FILEUPLOAD\InnerFile\File' is denied.

Function Defination

    var cd = new System.Net.Mime.ContentDisposition { FileName = "PDF.pdf", Inline = true };

               string contentType = MimeMapping.GetMimeMapping("PDF.pdf");
     Response.AppendHeader("Content-Disposition", cd.ToString()); 
    var innerPath = "InnerFile/File" ;

                FileInfo fi = new FileInfo(PDFUploadRootPath + innerPath + "/PDF.pdf");

byte[] bytes = System.IO.File.ReadAllBytes(PDFUploadRootPath + innerPath);

            return File(bytes, contentType);

NOTE:

  • Given Full permission to user
  • Physically File Exists

I dont understand what to do now please help!

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Upvotes: 1

Views: 11514

Answers (2)

mkl
mkl

Reputation: 95918

Your FileInfo instance indeed references 'E:\FILE\FILEUPLOAD\InnerFile\File\PDF.pdf':

FileInfo fi = new FileInfo(PDFUploadRootPath + innerPath + "/PDF.pdf");

but when trying to read the file contents you forgot the file name and only use the path 'E:\FILE\FILEUPLOAD\InnerFile\File':

byte[] bytes = System.IO.File.ReadAllBytes(PDFUploadRootPath + innerPath);

Thus, also add the file name for reading all file bytes:

byte[] bytes = System.IO.File.ReadAllBytes(PDFUploadRootPath + innerPath + "/PDF.pdf");

Furthermore, as others have mentioned in comments, you should really use Path.Combine to glue path parts together, not simple string concatenation...

Upvotes: 2

VIKAS
VIKAS

Reputation: 61

Try using FileStream instead of byte array for reading the pdf file. 

FileStream templateFileStream = File.OpenRead(filePath);
            return templateFileStream;

Also check (through code) if user has write permission to directory or path: 

public static bool HasUserWritePermission(String path, String NtAccountName)
    {
        DirectoryInfo di = new DirectoryInfo(path);
        DirectorySecurity acl = di.GetAccessControl(AccessControlSections.All);
        AuthorizationRuleCollection rules = acl.GetAccessRules(true, true, typeof(NTAccount));
        Boolean hasPermission = false;
        //Go through the rules returned from the DirectorySecurity
        foreach (AuthorizationRule rule in rules)
        {
            //If we find one that matches the identity we are looking for
            if (rule.IdentityReference.Value.Equals(NtAccountName, StringComparison.CurrentCultureIgnoreCase))
            {
                //Cast to a FileSystemAccessRule to check for access rights
                if ((((FileSystemAccessRule)rule).FileSystemRights & FileSystemRights.WriteData) > 0)
                {
                    hasPermission = true;
                }
                else
                {
                    hasPermission = false;
                }
            }
        }
        return hasPermission;
    }

Upvotes: 0

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