Useful Code At End of 2012

I like to wish you happy New Year and best of luck for 2013, and end of the 2012 I am going to post some important code block which are in use day to day life.

1. IP Address Validation
2. Date Time according to the time zone
3. Properties automapper code for object

1. IP Address Validation
Validations of IP Address like in range, grater then or less then and equal to are easily done by Sytem.Net.IPAddress class.

            protected void Page_Load(object sender, EventArgs e)
            {
                var ip = "192.168.4.159";
                var ip1 = "192.168.3.158";
                var ip2 = "192.168.5.156";

                var v1 = IsGreaterOrEqual(ip1, string.Empty);
                var v3 = IsInRange(ip1, ip2, ip);
                var v4 = IsEqual(ip1, ip2);
            }
            public bool IsValidIP(string IP)
            {
                IPAddress ot;
                bool valid = false;
                if (string.IsNullOrEmpty(IP))
                {
                    valid = false;
                }
                else
                {
                    valid = IPAddress.TryParse(IP, out ot);
                }
                return valid;
            }
            public bool IsGreaterOrEqual(string IPFrom, string IPTo)
            {
                return IPAddressToLongBackwards(IPFrom) <= IPAddressToLongBackwards(IPTo);
            }
            public bool IsInRange(string IPFrom, string IPTo, string IP)
            {
                var ipf = IPAddressToLongBackwards(IPFrom);
                var ip = IPAddressToLongBackwards(IP);
                var ipt = IPAddressToLongBackwards(IPTo);
                if (ipf <= ip)
                {
                    if (ip <= ipt)
                        return true;
                    else
                        return false;
                }
                else
                    return false;
            }
            public bool IsEqual(string IPFrom, string IP)
            {
                return IPAddress.Parse(IPFrom).Equals(IPAddress.Parse(IP));
            }
            private uint IPAddressToLongBackwards(string IPAddr)
            {
                System.Net.IPAddress oIP = System.Net.IPAddress.Parse(IPAddr);
                byte[] byteIP = oIP.GetAddressBytes();

                uint ip = (uint)byteIP[0] << 24;
                ip += (uint)byteIP[1] << 16;
                ip += (uint)byteIP[2] << 8;
                ip += (uint)byteIP[3];

                return ip;
            }
         
        

2. Date Time according to the time zone
Display date time according to the region time zone is now very common.
We can achieve that by convert data time object according to time zone by System. TimeZoneInfo class.
I am adding here some sample to convert date time according to time zone using TimeZoneInfo class.

            var mydatetime = DateTime.Now;

            var aest = TimeZoneInfo.FindSystemTimeZoneById("AUS Eastern Standard Time");
            var cst = TimeZoneInfo.FindSystemTimeZoneById("Central Europe Standard Time");

            //Response.Write(mydatetime.ToString());
            //Response.Write(mydatetime.ToUniversalTime());


            var tempdate1 = TimeZoneInfo.ConvertTime(mydatetime, aest);
            var tempdate2 = TimeZoneInfo.ConvertTime(mydatetime, cst);

            var tempoffset1 = cst.GetUtcOffset((tempdate1));
            var tempoffset2 = aest.GetUtcOffset((tempdate2));


            var ct = TimeZoneInfo.FindSystemTimeZoneById("Central Standard Time");
            var tempoffset3 = ct.GetUtcOffset((mydatetime));

            Response.Write(tempoffset1);
            Response.Write(tempoffset2);

            Response.Write(tempoffset3);


            Response.Write(tempoffset1 - tempoffset2);

       

3. Properties automapper code for object
The last but not least Auto mapper code for object. In our code we need to map object properties.
For that we need to map properties one by one. Hear some code will help to map all properties automatically.

            public class ProjectResource
            {
                public int Id { get; set; }
                public string Name { get; set; }
                public int Hour { get; set; }
                public int Rate { get; set; }
                public double Salary { get; set; }
                public int Type { get; set; }
            }

           var p = new ProjectResource { Hour = 2, Id = 8, Name = "project1", Rate = 5, Salary = 40000, Type = 5 };

            var p1 = new ProjectResource();

            foreach (var item in p.GetType().GetProperties().Where(x => x.Name != "EntityKey" && x.Name != "EntityState"))
            {
                p1.GetType().GetProperty(item.Name).SetValue(p1, item.GetValue(p, null), null);
            }

          

I hope this will be help you.
Feel free to add comments!