public static SECURITY_DESCRIPTOR StringToSecurityDescriptor(string strSD)
{
SECURITY_DESCRIPTOR StringToSecurityDescriptorRet = default;
MemPtr ptr = IntPtr.Zero;
uint ls = 0U;
SECURITY_DESCRIPTOR sd;
IntPtr argSecurityDescriptor = ptr;
SecurityDescriptor.ConvertStringSecurityDescriptorToSecurityDescriptor(strSD, 1U, ref argSecurityDescriptor, ref ls);
sd = ptr.ToStruct <SECURITY_DESCRIPTOR>();
ptr.LocalFree();
StringToSecurityDescriptorRet = sd;
return(StringToSecurityDescriptorRet);
}