RetrunMoreRow

using (Conn = new SqlConnection(ConnectionString))
{
   Conn.Open();//打开数据库连接
   string sqlstr = "select * from UserInfo2";
   SqlCommand cmd = new SqlCommand(sqlstr, Conn);
   cmd.CommandType = CommandType.Text;
   SqlDataReader dr = cmd.ExecuteReader(CommandBehavior.CloseConnection);//创建 SqlDataReader实例
   Response.Write("会员名称如下：<br/>");
   while (dr.Read())//遍历数据
   {
      Response.Write(dr["UserName"] + "<br/>");
   }
}