public static void CreateDirectory(string path)
{
if (!Directory.Exists(path))
{
DirectorySecurity securityRules = new DirectorySecurity();
DirectoryInfo dir = Directory.CreateDirectory(path);
dir.SetAccessControl(securityRules);
//securityRules.AddAccessRule(new FileSystemAccessRule(@"Domain\YourAppAllowedGroup", FileSystemRights.FullControl, AccessControlType.Allow));
}
}
}