public void SetAccessControl()
        {
            string tempFile = Path.GetTempFileName();

            FileInfo     fi       = new FileInfo(tempFile);
            FileSecurity expected = fi.GetAccessControl(AccessControlSections.All);

            ExtendedFileInfo efi = new ExtendedFileInfo(tempFile);

            Assert.IsNotNull(efi);

            FileSecurity fileSecurity = new FileSecurity();

            fileSecurity.AddAccessRule(new FileSystemAccessRule("Everyone", FileSystemRights.FullControl, AccessControlType.Allow));

            efi.SetAccessControl(fileSecurity);

            Assert.AreNotEqual(expected.GetSecurityDescriptorBinaryForm(), efi.GetAccessControl().GetSecurityDescriptorBinaryForm());

            FileSecurity actualFileSecurity   = File.GetAccessControl(tempFile);
            AuthorizationRuleCollection rules = actualFileSecurity.GetAccessRules(true, true, typeof(NTAccount));

            foreach (AuthorizationRule rule in rules)
            {
                FileSystemAccessRule accessRule = (FileSystemAccessRule)rule;

                if (accessRule.IdentityReference.Value == "Everyone")
                {
                    Assert.IsTrue(accessRule.AccessControlType == AccessControlType.Allow);
                    Assert.IsTrue(accessRule.FileSystemRights == FileSystemRights.FullControl);
                }
            }

            fi.SetAccessControl(expected);
        }