Question

以下代码不能连续测试距离？就是数据库有很多点坐标，算当前坐标和前一坐标的距离，下面代码怎么改呢？谢

DataView dvPostion = new DataView(dt);
dvPostion.RowFilter = "point = '" + strPoint + "'";
XYValues values = new XYValues();
values.x = int.Parse(dvPostion[0]["X"].ToString());
values.y = int.Parse(dvPostion[0]["Y"].ToString());
return values;

Answer 1

链接数据库的语句?
define("HOST", "localhost");
define("USER", "数据库用户名");
define("PASSWORD", "数据库密码");
define("DATABASE", "数据库表");
$db=mysql_connect(HOST, USER, PASSWORD) or die ("mysql connected failed");
mysql_select_db(DATABASE, $db);
或
$DBHOST="localhost";
$DBUSER="用户名";
$DBPWD="密码";
$DBNAME="表名";
然后在页面中打开查询...

噢,对了.localhost是指本地.如果是远程的话.就得用ip