我的个人网站上有一个页面,主要介绍了一些我喜欢的书籍,目前有9本,这样把页面拉的很长,挺影响美观的,于是决定分页显示它们。我没有SQL数据库,而且我也不想用复杂的数据库来存放这种简单的数据,所以我用的是XML文件,把它读入DataSet,然后再在Repeater中显示。
如果是SQL数据库或Access等,分页到是挺简单的,但是我存放数据的是XML文件,又不能用SQL语句,怎么办呢?问了一个高手,知道了还有一种叫XPath的语言,又学到一些东西了,不敢偷懒,马上记下。
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上面的代码中,pager是一个分页控件,books是一个Repeater,用XPath选择要读取的节点,把它赋值到一个DataRow中,然后将之导入DataTable中,再绑定到Repeater上,就可以显示了。这里遇到个小问题,不能用ds2.Tables[0].Rows.Add(row);这个语句,否则会抛个“此DataRow已属于另一个DataTable”的异常,不知为什么,改为ImportRow就没问题了。希望哪位高手知道,请告诉我一声,谢谢。