Functions to generate 10 digits random numbers in c#

Functions to generate 10 digits random numbers in c#

Function 1-         public static int NewKey()         {             Random ran = new Random(DateTime.Now.Millisecond);             int key = 0;             key = ran.Next(1000000000, int.MaxValue);             return key;         }

Function 2- public static string GetTenDigitRandomNumber() {   Random generator = new Random();   return generator.Next(0, 1000000).ToString("D10"); }