public int GetPropertyQualifierSet_(string wszProperty, out IWbemQualifierSetFreeThreaded ppQualSet) { IntPtr ptr; if (this.pWbemClassObject == IntPtr.Zero) { throw new ObjectDisposedException(name); } int num = WmiNetUtilsHelper.GetPropertyQualifierSet_f(11, this.pWbemClassObject, wszProperty, out ptr); if (num < 0) { ppQualSet = null; } else { ppQualSet = new IWbemQualifierSetFreeThreaded(ptr); } GC.KeepAlive(this); return(num); }