笔记:操作多个iframe
功能要求:在调用了多个iframe的页面使用按钮操纵iframe中的方法
暂时使用了两种方法,感觉不是很好:
1.使用cookie
在外面页面做一个cookie,在iframe中检查一下,发现清除有问题
(1)只保存一个空cookie
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protected void btnLoad_Click(object sender, EventArgs e)
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{
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String cookieName = "loadCookie";
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HttpCookie cookie = new HttpCookie(cookieName);
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DateTime dt = DateTime.Now;
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TimeSpan ts = new TimeSpan(0, 0, 10, 0);//10分钟
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cookie.Expires = dt.Add(ts);
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Response.Cookies.Add(cookie);
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}
![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
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![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedBlockStart.gif)
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![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
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![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
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![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
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![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
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![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
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![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
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![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedBlockEnd.gif)
在iframe中使用并将时间减少:
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if (Request.Cookies["loadCookie"] != null)
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{
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HttpCookie cookie = Request.Cookies["loadCookie"];
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cookie.Expires = DateTime.Now.AddMinutes(-10);
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}
![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
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![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedBlockStart.gif)
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![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
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![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
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![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedBlockEnd.gif)
(2)在cookie里面加个值
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protected void btnLoad_Click(object sender, EventArgs e)
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{
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String cookieName = "loadCookie";
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HttpCookie cookie = new HttpCookie(cookieName);
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DateTime dt = DateTime.Now;
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TimeSpan ts = new TimeSpan(0, 0, 10, 0);//10分钟
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cookie.Values.Add("Flag", "Flag");
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cookie.Expires = dt.Add(ts);
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Response.Cookies.Add(cookie);
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}
11![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
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![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedBlockStart.gif)
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![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
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![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
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![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
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![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
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![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
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![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
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![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
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![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedBlockEnd.gif)
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![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
在iframe中使用并清除:
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if (Request.Cookies["loadCookie"] != null)
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{
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if (Request.Cookies["loadCookie"].Values["Flag"] == "Flag")
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{
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Request.Cookies["loadCookie"].Values.Clear();
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}
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}
![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
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![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedBlockStart.gif)
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![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
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![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
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![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
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![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockEnd.gif)
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![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedBlockEnd.gif)
2.使用session
单击事件加个session:
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Session["Load"] = "Load";
![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
iframe中使用:
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if (Session["Load"] != null)
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{
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count++;
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if (count == countNum)
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{
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Session["Load"] = null;
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count = 0;
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}
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}
![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
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![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedBlockStart.gif)
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![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
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![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
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![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
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![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
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![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
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![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockEnd.gif)
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![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedBlockEnd.gif)
不知道哪里有问题,只是凭空想出来的,以后用的时候再想想
哪位要是能帮指正一下更好
终于找到了好方法:用js条用iframe中button的click
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function loadBatch()
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{
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var num=document.all["txtHiddenNum"].value;
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for(i=1;i<=num;i++)
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{
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var buttonObject = eval("subPrintIframe"+i+".document.all['loadButton']")
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buttonObject.click();
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}
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return false;
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}
![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
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![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedBlockStart.gif)
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![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
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![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
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![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
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![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
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![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
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![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockEnd.gif)
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![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
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![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedBlockEnd.gif)
其中iframe的id为:id='subPrintIframe"+i+"'
js就是好啊
HelloWorld