winform 里给一个按钮添加一个UAC 用户身份验证的。有谁做过没？前提在win7下面操作..

        internal bool IsRunAsAdmin()
        {
            WindowsIdentity id = WindowsIdentity.GetCurrent();
            WindowsPrincipal principal = new WindowsPrincipal(id);
            return principal.IsInRole(WindowsBuiltInRole.Administrator);
        }