设置目录的访问权限 - 接收异常"无法设置标志"

我试图progamrtaiclly允许写入目录上的ASPNET帐户.我使用以下代码执行此操作:(请注意,我希望ASPNET的"允许写入访问"也传播到子对象:

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);
            }

此代码导致异常:"无法设置标志.\ r \nParameter name:inheritanceFlags"

可能有什么不对？

得到了解决方案,显然我必须这样做:

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);