Setting access rights for a directory - receiving exception "No flags can be set"

Question

I am trying to progamrtaiclly allow write access to ASPNET account on a directory. I am using the following code to do this: (Please note that I want the "write access allowed" for ASPNET to be propagated to the child objects as well:

static void Main(string[] args)
            {


                FileSecurity fileSecurity;

                fileSecurity = new FileSecurity();

                fileSecurity.SetAccessRuleProtection(true, false);

                fileSecurity.AddAccessRule(new FileSystemAccessRule("ASPNET",FileSystemRights.Write,InheritanceFlags.ObjectInherit|InheritanceFlags.ContainerInherit,PropagationFlags.InheritOnly,AccessControlType.Allow));                                   

                File.SetAccessControl("C:\\TestDir1", fileSecurity);
            }

This code is resulting in the exception: "No flags can be set.\r\nParameter name: inheritanceFlags"

What could be wrong?

Answer 1

Got the solution, apparently I would have to do it this way:

DirectoryInfo dirInfo = new DirectoryInfo("C:\\TestDir2");
            DirectorySecurity dirSecurity = dirInfo.GetAccessControl();

            dirSecurity.AddAccessRule(new FileSystemAccessRule("ASPNET", FileSystemRights.Write|FileSystemRights.DeleteSubdirectoriesAndFiles, InheritanceFlags.ContainerInherit | InheritanceFlags.ObjectInherit, PropagationFlags.InheritOnly, AccessControlType.Allow));


            dirInfo.SetAccessControl(dirSecurity);