Random rd = new Random();
int sjbh = rd.Next(100, 999999999);
string hmbf = sjbh.ToString();
string hybhstr = "yhb"+hmbf;
断点查看字符串hybhstr,值为null,这是为什么?
Random rd = new Random();
int sjbh = rd.Next(100, 999999999);
string hmbf = sjbh.ToString();
string hybhstr = "yhb"+hmbf;
断点查看字符串hybhstr,值为null,这是为什么?