C#提高随机数不重复概率的种子生成方法

static int GetRandomSeed( )  {           byte[] bytes = new byte[4];         System.Security.Cryptography.RNGCryptoServiceProvider rng = new       System.Security.Cryptography.RNGCryptoServiceProvider( );         rng.GetBytes( bytes );         return BitConverter.ToInt32( bytes , 0 );  }  Random random = new Random( GetRandomSeed( ) );