摘要： int [] arr = {5,1,7,9,2,4,6,,8,3}; Array.Sort(arr); //降序排列foreach(int a in arr) { Console.Write(a);}Array.Reverse(arr);//升序排列foreach(int a in arr) { Console.Write(a);}Console.ReadKey(); 阅读全文

摘要： 1 public int CheckUserName(string username) 2 { 3 DBClass db = new DBClass(); 4 int a; 5 using (SqlConnection conn = db.GetConn()) 6 { 7 SqlCommand cmd = new SqlCommand("select count(*) from tb_Member111 where id = '" + username + "'", conn); 8 a = Convert.ToInt32(cmd.Exe 阅读全文