C#•3y ago

UnauthorizedAccessException [Answered]

So im trying to change a folders icon, setting it manually sometimes removes it again 🤷‍♂️ , so i hope this works for the time beeing.

34 Replies

VeQoxOP•3y ago

class Program
    {
        [DllImport("shell32.dll", CharSet = CharSet.Auto, SetLastError = true)]
        private static extern void SHChangeNotify(
            int wEventId, int uFlags, IntPtr dwItem1, IntPtr dwItem2);

        static void Main(string[] args)
        {
            const string iconFolder = "icons";

            string workingDiretory = Directory.GetCurrentDirectory();
            string[] folders = Directory.GetDirectories(workingDiretory);
            string[] icons = Directory.GetFiles(Path.Combine(workingDiretory, iconFolder));

            for (int i = 0; i < folders.Length && folders[i] != "icons"; i++)
            {
                string folderPath = folders[i];
                string iconPath = icons[i];
                string iconName = Path.GetFileName(iconPath);
                string desktopIniPath = Path.Combine(folderPath, "desktop.ini");
                string hiddenPath = Path.Combine(folderPath, ".hidden");

                string[] desktopIniContent = new string[] 
                { 
                    "[.ShellClassInfo]",
                    $"IconResource={iconName},0",
                    "[ViewState]",
                    "Mode=",
                    "Vid=",
                    "FolderType=Generic"                                   
                };

                string[] hiddenConent = new string[]
                {
                    "desktop.ini",
                    iconName
                };

                File.WriteAllLines(Path.Join(folderPath,"desktop.ini"), desktopIniContent, Encoding.UTF8);
                File.Copy(iconPath, Path.Join(folderPath, iconName));
                File.WriteAllLines(Path.Join(folderPath, ".hidden"), hiddenConent, Encoding.UTF8);

class Program
    {
        [DllImport("shell32.dll", CharSet = CharSet.Auto, SetLastError = true)]
        private static extern void SHChangeNotify(
            int wEventId, int uFlags, IntPtr dwItem1, IntPtr dwItem2);

        static void Main(string[] args)
        {
            const string iconFolder = "icons";

            string workingDiretory = Directory.GetCurrentDirectory();
            string[] folders = Directory.GetDirectories(workingDiretory);
            string[] icons = Directory.GetFiles(Path.Combine(workingDiretory, iconFolder));

            for (int i = 0; i < folders.Length && folders[i] != "icons"; i++)
            {
                string folderPath = folders[i];
                string iconPath = icons[i];
                string iconName = Path.GetFileName(iconPath);
                string desktopIniPath = Path.Combine(folderPath, "desktop.ini");
                string hiddenPath = Path.Combine(folderPath, ".hidden");

                string[] desktopIniContent = new string[] 
                { 
                    "[.ShellClassInfo]",
                    $"IconResource={iconName},0",
                    "[ViewState]",
                    "Mode=",
                    "Vid=",
                    "FolderType=Generic"                                   
                };

                string[] hiddenConent = new string[]
                {
                    "desktop.ini",
                    iconName
                };

                File.WriteAllLines(Path.Join(folderPath,"desktop.ini"), desktopIniContent, Encoding.UTF8);
                File.Copy(iconPath, Path.Join(folderPath, iconName));
                File.WriteAllLines(Path.Join(folderPath, ".hidden"), hiddenConent, Encoding.UTF8);

        File.SetAttributes(desktopIniPath,
                    File.GetAttributes(desktopIniPath)
                    | FileAttributes.Hidden
                    | FileAttributes.ReadOnly);
                File.SetAttributes(iconPath,
                    File.GetAttributes(iconPath)
                    | FileAttributes.Hidden
                    | FileAttributes.ReadOnly);
                File.SetAttributes(hiddenPath,
                    File.GetAttributes(hiddenPath)
                    | FileAttributes.Hidden
                    | FileAttributes.ReadOnly);
                File.SetAttributes(folderPath,
                    File.GetAttributes(folderPath)
                    | FileAttributes.ReadOnly);

                SHChangeNotify(0x08000000, 0x0000, (IntPtr)null, (IntPtr)null);
            }


        }
    }

        File.SetAttributes(desktopIniPath,
                    File.GetAttributes(desktopIniPath)
                    | FileAttributes.Hidden
                    | FileAttributes.ReadOnly);
                File.SetAttributes(iconPath,
                    File.GetAttributes(iconPath)
                    | FileAttributes.Hidden
                    | FileAttributes.ReadOnly);
                File.SetAttributes(hiddenPath,
                    File.GetAttributes(hiddenPath)
                    | FileAttributes.Hidden
                    | FileAttributes.ReadOnly);
                File.SetAttributes(folderPath,
                    File.GetAttributes(folderPath)
                    | FileAttributes.ReadOnly);

                SHChangeNotify(0x08000000, 0x0000, (IntPtr)null, (IntPtr)null);
            }


        }
    }

im getting a UnauthorizedAccessException but i dont know why

Unhandled exception. System.UnauthorizedAccessException: Access to the path '....\desktop.ini' is denied.
   at Microsoft.Win32.SafeHandles.SafeFileHandle.CreateFile(String fullPath, FileMode mode, FileAccess access, FileShare share, FileOptions options)
   at Microsoft.Win32.SafeHandles.SafeFileHandle.Open(String fullPath, FileMode mode, FileAccess access, FileShare share, FileOptions options, Int64 preallocationSize)
   at System.IO.Strategies.OSFileStreamStrategy..ctor(String path, FileMode mode, FileAccess access, FileShare share, FileOptions options, Int64 preallocationSize)
   at System.IO.Strategies.FileStreamHelpers.ChooseStrategyCore(String path, FileMode mode, FileAccess access, FileShare share, FileOptions options, Int64 preallocationSize)
   at System.IO.Strategies.FileStreamHelpers.ChooseStrategy(FileStream fileStream, String path, FileMode mode, FileAccess access, FileShare share, Int32 bufferSize, FileOptions options, Int64 preallocationSize)
   at System.IO.StreamWriter.ValidateArgsAndOpenPath(String path, Boolean append, Encoding encoding, Int32 bufferSize)
   at System.IO.File.WriteAllLines(String path, IEnumerable`1 contents, Encoding encoding)
   at SetFolderIcon.Program.Main(String[] args) in 
Program.cs:line 46

Unhandled exception. System.UnauthorizedAccessException: Access to the path '....\desktop.ini' is denied.
   at Microsoft.Win32.SafeHandles.SafeFileHandle.CreateFile(String fullPath, FileMode mode, FileAccess access, FileShare share, FileOptions options)
   at Microsoft.Win32.SafeHandles.SafeFileHandle.Open(String fullPath, FileMode mode, FileAccess access, FileShare share, FileOptions options, Int64 preallocationSize)
   at System.IO.Strategies.OSFileStreamStrategy..ctor(String path, FileMode mode, FileAccess access, FileShare share, FileOptions options, Int64 preallocationSize)
   at System.IO.Strategies.FileStreamHelpers.ChooseStrategyCore(String path, FileMode mode, FileAccess access, FileShare share, FileOptions options, Int64 preallocationSize)
   at System.IO.Strategies.FileStreamHelpers.ChooseStrategy(FileStream fileStream, String path, FileMode mode, FileAccess access, FileShare share, Int32 bufferSize, FileOptions options, Int64 preallocationSize)
   at System.IO.StreamWriter.ValidateArgsAndOpenPath(String path, Boolean append, Encoding encoding, Int32 bufferSize)
   at System.IO.File.WriteAllLines(String path, IEnumerable`1 contents, Encoding encoding)
   at SetFolderIcon.Program.Main(String[] args) in 
Program.cs:line 46

 File.WriteAllLines(Path.Join(folderPath,"desktop.ini"), desktopIniContent,Encoding.UTF8);

 File.WriteAllLines(Path.Join(folderPath,"desktop.ini"), desktopIniContent,Encoding.UTF8);

this throwes the error but how does it not have access if the file doesnt even exist?

RazorSharpFang•3y ago

The application may not have write access to the folder itself

UnauthorizedAccessException path specified a file that is read-only. -or- path specified a file that is hidden. -or- This operation is not supported on the current platform. -or- path is a directory. -or- The caller does not have the required permission.

VeQoxOP•3y ago

well how do i check if my program has write access to the folder Hmm

RazorSharpFang•3y ago

Try out DirectoryInfo of the target directory Check its Attributes property which is of type FileSystemInfo

VeQoxOP•3y ago

like thats the issue

RazorSharpFang•3y ago

If this solves your issue, close the post by using command /close

VeQoxOP•3y ago

well kinda, im just trying to figure it out how to change that without having to go through every folder

RazorSharpFang•3y ago

Change its attributes so you can write to it?

VeQoxOP•3y ago

like this?

RazorSharpFang•3y ago

Uhm, no?

Normal 128
The file is a standard file that has no special attributes. This attribute is valid only if it is used alone. Normal is supported on Windows, Linux, and macOS.

That's not a file

VeQoxOP•3y ago

...... right

RazorSharpFang•3y ago

You want Directory and without readonly

VeQoxOP•3y ago

DirectoryInfo awd = new(folderPath)
                {
                    Attributes = FileAttributes.Directory
                };

DirectoryInfo awd = new(folderPath)
                {
                    Attributes = FileAttributes.Directory
                };

RazorSharpFang•3y ago

Probably best to separate out that declaration and assignment with a try-catch sector Because you may not succeeed changing its attributes

VeQoxOP•3y ago

the attribute changed from ReadOnly, Directory to Directory it still throws an error tho

RazorSharpFang•3y ago

Does it still say ReadOnly after you refresh it?

VeQoxOP•3y ago

in the explorer?

RazorSharpFang•3y ago

No, call the Refresh() method

VeQoxOP•3y ago

Nope only directory whats weird is that in the explorer interface it says its readonly

RazorSharpFang•3y ago

Is it still readonly if you run the app again? What if you tried something like the following

DirectoryInfo directory = new DirectoryInfo(@"C:\my\directory");
DirectorySecurity security = directory.GetAccessControl();

security.AddAccessRule(new FileSystemAccessRule(@"MYDOMAIN\JohnDoe", 
                        FileSystemRights.Modify, 
                        AccessControlType.Deny));

directory.SetAccessControl(security);

DirectoryInfo directory = new DirectoryInfo(@"C:\my\directory");
DirectorySecurity security = directory.GetAccessControl();

security.AddAccessRule(new FileSystemAccessRule(@"MYDOMAIN\JohnDoe", 
                        FileSystemRights.Modify, 
                        AccessControlType.Deny));

directory.SetAccessControl(security);

VeQoxOP•3y ago

whats the identity on the FileSystemAccessRule constructor?

RazorSharpFang•3y ago

System.Security.AccessControl

VeQoxOP•3y ago

so johndoe is the username? and how do i get the domain or do i just let it be empty so @"\user"

RazorSharpFang•3y ago

If it's a local user it's .\username A domain user would be part of an organization like a workplace

VeQoxOP•3y ago

to parse the identy my user name is what echo %username% gives me back? tried both, %username% and the name visually on windows

RazorSharpFang•3y ago

Is this computer part of a domain?

VeQoxOP•3y ago

sry fell asleep pepecuke

VeQoxOP•3y ago

found this im guessingf the workgroup is my domain?

VeQoxOP•3y ago

Also thought of a different approach im creating and editing the files outside and then move them in the problem is there seems to be already a desktop.ini file inside the folder and with hidden items it cant be viewed

VeQoxOP•3y ago

also got this enabled

VeQoxOP•3y ago

with dir i can see there is a desktop.ini file

VeQoxOP•3y ago

when i remove the file with cmd it works

Accord•3y ago

✅ This post has been marked as answered!

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UnauthorizedAccessException [Answered]