Iframe的基础应用——关于Iframe刷页问题的两种方法
看到题目相信大家都已经知道这次要讲述什么内容了。关于Iframe刷页问题在网络中随便一搜索就能找到,我也是这么做的,可是搜索到的结果不一定就是自己的东西,因此我们应该学会总结。在这里我们就来总结一下关于Iframe刷页。
网络中的论坛或者是博客中大多数都是用的父页A.aspx和子页B.aspx形式来举例子的,这里我们的例子来用三个页面,一个父页A.aspx和两个子页B.aspx、C.aspx,可能大家会觉得,为何要用两个子页呢,用一个子页和两个子页有什么区别呢?因为我们这里要用到从子页C.aspx来刷新子页B.aspx。
下面先讲解第一种刷新方法:“重新定向到本页”
父页A.aspx的脚本如下:
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父页A.aspx无后台代码。
子页B.aspx的脚本如下:
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(这里有一个控制Div层显示的JavaScript的方法从第26行开始的,以及第10、11、12行标记是为了去处页面缓存的,当某个aspx页面作为弹出页面或者嵌入在Iframe中的页面而言是需要这三行代码消除页面缓存的,否则呈现的是缓存中的数据页面——不值得一提,但还是提了,呵呵……)
子页B.aspx的后台代码:
主要来关心一下Page_Load事件的代码,其他的在这里省略了
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下面我们在C.aspx页面中放置两个服务器控件“Button”(Button1和Button2),Text属性分别为“重定向B.aspx页面”和“重载B.aspx页面”,那么子页C.aspx的脚本如下:
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子页C.aspx的后台代码:
主要关心一下Button1的Click事件
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此时启动调试程序(当然将A.aspx设为启动页后调试),点击“Button1”,弹出的消息框永远是“这是重定向刷新B.aspx页面”。
再来看看第二种刷新方法:“重载页面”
子页C.aspx的后台代码:
主要关心一下Button2的Click事件
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这里我们调用了B.aspx页面的JavaScript的一个回传页面的方法RefreshmyForm(),此时启动调试程序,点击“Button2”,弹出的消息框永远是“这是重载本页后刷新B.aspx页面”。
那么有人就会问了,如何在Iframe的页面中来刷新父页面呢?
我们仍然在C.aspx页面中做这个事情,加入“Button3”,Text属性为“重定向A.aspx页面”,C.aspx的脚本代码我们在这里省略。子页C.aspx的后台代码:
主要关心Button3的Click事件
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在这里我们讲解了关于从Iframe的一个页面刷新另外一个Iframe页面的两种方法,以及简单说明了如何从Iframe的页面来刷新其所在的父页面。