Why is access to the path denied?

Question

I am having a problem where I am trying to delete my file but I get an exception.

if (result == \"Success\")
{
     if (FileUpload.HasFile)
     {
         t         


        

Answer 1

First just check the path if the colon(:) character is missing or not after the drive letter. If colon is not missing then you can check if access/write permission is granted for that path. I had the same issue and i was only missing the colon, permission and everything else was fine.

C:\folderpath

will work fine but,

C\folderpath .........(missing colon)

will give you access denial error.

Answer 2

To solve this problem, I follow the Scot Hanselman approach at Debugging System.UnauthorizedAccessException (often followed by: Access to the path is denied) article, the code with example is bellow:

class Program
{
    static void Main(string[] args)
    {
        var path = "c:\\temp\\notfound.txt";
        try
        {
            File.Delete(path);
        }
        catch (UnauthorizedAccessException)
        {
            FileAttributes attributes = File.GetAttributes(path);
            if ((attributes & FileAttributes.ReadOnly) == FileAttributes.ReadOnly)
            {
                attributes &= ~FileAttributes.ReadOnly;
                File.SetAttributes(path, attributes);
                File.Delete(path);
            }
            else
            {
                throw;
            }
        }
    }
}

Answer 3

I was facing this error because

Sometimes when I Combine the path with File Name and FileName = ""

It become Path Directory not a file which is a problem as mentioned above

so you must check for FileName like this

if(itemUri!="")
        File.Delete(Path.Combine(RemoteDirectoryPath, itemUri));

Answer 4

I got the error because I didn't realize that the destination should be a file. I had a folder as the second parameter (which works in cmd). and I got Unhandled Exception: System.UnauthorizedAccessException: Access to the path is denied. because C# File.Move wants a file there, not just for the first parameter, but for the second too, and so if you put a directory as second parameter, it's trying to write a file like c:\crp when you have a directory called c:\crp.

this would be incorrect File.Move(args[0],"c:\\crp");

So, this would be correct File.Move(args[0],"c:\\crp\\a.a");

The same goes for File.Copy

Answer 5

I had this error thrown when I tried to rename a folder very rapidly after it had been either moved or created.

A simple System.Threading.Thread.Sleep(500); solved it:

void RenameFile(string from, string to)
{
   try
   {   
      System.IO.File.Move(from, to)      
   }   
   catch 
   {  
       System.Threading.Thread.Sleep(500);      
       RenameFile(from, to);      
   }   
}

Answer 6

Right click on Visual studio and click Run as Administrator