C # Random acquisition of domestic IP

Call the Getrandomip () method to
Framework3.5 + Using LINQ

 Public stringGetrandomip () {/*int[][] This is called a jagged array, and vernacular is an array of arrays. Initialize method: int[][] numbers = new int[][] {new int[] {2,3,4}, new int[] {5,6,7,8,9}}; Of course you can also initialize int[][with the {} initializer     ] numbers = {new int[] {2,3,4}, new int[] {5,6,7,8,9}}; */         int[] Range = {New int[]{607649792,608174079},//36.56.0.0-36.63.255.255New int[]{1038614528,1039007743},//61.232.0.0-61.237.255.255New int[]{1783627776,1784676351},//106.80.0.0-106.95.255.255New int[]{2035023872,2035154943},//121.76.0.0-121.77.255.255New int[]{2078801920,2079064063},//123.232.0.0-123.235.255.255New int[]{-1950089216,-1948778497},//139.196.0.0-139.215.255.255New int[]{-1425539072,-1425014785},//171.8.0.0-171.15.255.255New int[]{-1236271104,-1235419137},//182.80.0.0-182.92.255.255New int[]{-770113536,-768606209},//210.25.0.0-210.47.255.255 New int[]{-569376768,-564133889},//222.16.0.0-222.95.255.255}; Random Rdint=NewRandom (); intindex = Rdint. Next (Ten); stringip = Num2ip (range[index][0] +NewRandom (). Next (range[index][1]-range[index][0])); returnIP; }         /** Convert decimal to IP address*/         Public stringNum2ip (intIP) {            int[] B =New int[4]; stringx =""; //displacement is then converted to high and low positions with 255.b[0] = (int) ((IP >> -) &0xFF); b[1] = (int) ((IP >> -) &0xFF); b[2] = (int) ((IP >>8) &0xFF); b[3] = (int) (IP &0xFF); X= (b[0]). ToString () +"."+ (b[1]). ToString () +"."+ (b[2]). ToString () +"."+ (b[3]).             ToString (); returnx; }

usingSystem;usingSystem.Collections.Generic;usingSystem.Linq;usingSystem.Text;usingSystem.Threading.Tasks;namespaceconsoleapplication1{classProgram {Staticdictionary<int,int> ips =New int[] {Enumerable.range (607649792,608174079-607649792+1). ToArray (), Enumerable.range (1038614528,1039007743-1038614528+1). ToArray (), Enumerable.range (1783627776,1784676351-1783627776+1). ToArray (), Enumerable.range (2035023872,2035154943-2035023872+1). ToArray (), Enumerable.range (2078801920,2079064063-2078801920+1). ToArray (), Enumerable.range (-1950089216, -1948778497+1950089216+1). ToArray (), Enumerable.range (-1425539072, -1425014785+1425539072+1). ToArray (), Enumerable.range (-1236271104, -1235419137+1236271104+1). ToArray (), Enumerable.range (-770113536, -768606209+770113536+1). ToArray (), Enumerable.range (-569376768, -564133889+569376768+1). ToArray ()}. SelectMany (x= x). Select ((x, i) = =New{x, i}). ToDictionary (x = x.i, x = =x.x); Static stringIptostring (intIP) {            return string. Join (".", Bitconverter.getbytes (IP). Reverse (). Select (x = (int) x).        ToString ())); }         Static intGenip () {returnips[NewRandom (Guid.NewGuid (). GetHashCode ()). Next (0, IPs.        Count)]; }         Static voidMain (string[] args) {             for(inti =0; I <Ten; i++) Console.WriteLine (Iptostring (Genip ())); }    }}

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C # Random acquisition of domestic IP