Add “Everyone” privilege to folder using C#.NET

by

First thing I want to tell you is how I found this solution. This is probably more important than the answer because file permissions are hard to get correct.

First thing I did was set the permissions I wanted using the Windows dialogs and checkboxes. I added a rule for “Everyone” and ticked all boxes except “Full Control”.

Then I wrote this C# code to tell me exactly what parameters I need to duplicate the Windows settings:

string path = @"C:\Users\you\Desktop\perms"; // path to directory whose settings you have already correctly configured
DirectorySecurity sec = Directory.GetAccessControl(path);
foreach (FileSystemAccessRule acr in sec.GetAccessRules(true, true, typeof(System.Security.Principal.NTAccount))) {
    Console.WriteLine("{0} | {1} | {2} | {3} | {4}", acr.IdentityReference.Value, acr.FileSystemRights, acr.InheritanceFlags, acr.PropagationFlags, acr.AccessControlType);
}

This gave me this line of output:

Everyone | Modify, Synchronize | ContainerInherit, ObjectInherit | None | Allow

So the solution is simple (yet hard to get right if you don’t know what to look for!):

DirectorySecurity sec = Directory.GetAccessControl(path);
// Using this instead of the "Everyone" string means we work on non-English systems.
SecurityIdentifier everyone = new SecurityIdentifier(WellKnownSidType.WorldSid, null);
sec.AddAccessRule(new FileSystemAccessRule(everyone, FileSystemRights.Modify | FileSystemRights.Synchronize, InheritanceFlags.ContainerInherit | InheritanceFlags.ObjectInherit, PropagationFlags.None, AccessControlType.Allow));
Directory.SetAccessControl(path, sec);

This will make the checkboxes on the Windows security dialog match what you have already set for your test directory.

More Related Contents:

  1. Windows 8 style charmbar in WPF? [closed]
  2. Passing Objects By Reference or Value in C#
  3. Difference between new and override
  4. Execute a large SQL script (with GO commands)
  5. Calling stored procedure with return value
  6. Get a screenshot of a specific application
  7. How to hide close button in WPF window?
  8. How can I access an internal class from an external assembly?
  9. Select distinct using linq [duplicate]
  10. Retrying HttpClient Unsuccessful Requests
  11. What’s the difference between Application.ThreadException and AppDomain.CurrentDomain.UnhandledException?
  12. A specified Include path is not valid. The EntityType does not declare a navigation property with the name *
  13. MVP examples for Windows Forms
  14. EPPlus number format
  15. Stream.Seek(0, SeekOrigin.Begin) or Position = 0
  16. Is there an exponent operator in C#?
  17. How do I determine the true pixel size of my Monitor in .NET?
  18. How can I programmatically limit my program’s CPU usage to below 70%?
  19. ASP.NET MVC 3: DefaultModelBinder with inheritance/polymorphism
  20. Convert IHtmlContent/TagBuilder to string in C#
  21. Using Linq Except not Working as I Thought
  22. What is the purpose of AsQueryable()?
  23. The OutputPath property is not set for this project
  24. convert string array to string
  25. How can I use Html.DisplayFor inside of an iterator?
  26. A fast hash function for string in C#
  27. Read from App.config in a Class Library project
  28. How to fetch string from resource to assign in WPF Resource section in xaml
  29. How to pass string value from one form to another form’s load event in C #
  30. Can I use Linq’s Except() with a lambda expression comparer?

Leave a Comment