ipchange

  public string ipChange(uint ip)

        {
            string result="";
            uint temp;
            for (int i = 3; i >= 0; i--)
            {
              
                temp =  ip>> (8 * i);
               // ip -= temp << (8 * i);
                ip = ip << (8*(4-i));
                ip = ip >> (8 * (4 - i));
                result += temp.ToString() + ".";
            }
            result = result.Remove(result.Length-1, 1);
            return result;

            /*
             * string result="";
             * 
             * int first,second,third,fourth;
             * first=ip>>24;
             * 
             * ip=ip-first*256*256*256;
             * 
             * second=ip>>16;
             * ip=ip-second*256*256;
             * 
             * third=ip>>8;
             * ip=ip-third*256;
             * 
             * fourth=ip;
             * 
             * result=first+"."+second+"."third+"."+"fourth";
             * */
        }
        public uint ipChange(string ip)
        {
          
           uint result =0;
           uint temp=0;
           string[] ipstring=ip.Split('.');
             

                for (int i = 0; i < 4; i++)
           { 
               temp=Convert.ToUInt32( ipstring[i]);
               result += temp << (8 * (3 - i));
           }
           return result;
        }