public IPEnumerator(string startAddress, string endAddress)
        {
            this.startAddress = startAddress;
            this.endAddress   = endAddress;

            currentIP        = IPEnumeration.AddressToInt(startAddress);
            endIP            = IPEnumeration.AddressToInt(endAddress);
            isFirstEnumerate = true;
        }
 public void Reset()
 {
     isFirstEnumerate = true;
     currentIP        = IPEnumeration.AddressToInt(startAddress);
 }