过程很简单:
首先在asp.net页面中设定开始打印和结束打印的标记,为了确保该标记不在网页浏览时显示,我们采用"<!-- HTML注释 -->"的方式。比如:<!--startprint-->和<!--endprint-->。
接着写相关的JavaScript代码,具体代码见后。
如果不想打印按钮也被打印出来,注意将打印按钮包含在<!--startprint-->和<!--endprint-->之外。
相关代码: 复制代码 代码如下: <%@ Page Language="C#" AutoEventWireup="true" CodeBehind="AppealPrint.aspx.cs" Inherits="Appeal.AppealPrint"
MasterPageFile="MasterPage.master" Title="诉求打印" %>
<asp:Content ID="Content1" ContentPlaceHolderID="CphNavigation" runat="server"> </asp:Content> <asp:Content ID="Content2" ContentPlaceHolderID="CphContent" runat="server"> <!--startprint--> <style type="text/css"> body,table{ font-size:12px; } table{ table-layout:fixed; empty-cells:show; border-collapse: collapse; margin:0 auto; } td{ height:20px; } h1,h2,h3{ font-size:12px; margin:0; padding:0; }
table{ border:1px solid #cad9ea; color:#666; } table th{ height:30px; } table td,table th{ border:1px solid #cad9ea; padding:0 1em 0; } table tr{ background-color:#f5fafe; } </style> <table class="border" cellspacing="0" cellpadding="2" style="margin: 0px auto; width: 98%;border:1px solid;border-collapse:collapse;" id="TabBtnPrint"> <tbody> <tr align="center"> <td class="title"><strong>诉 求 信 息</strong></td> </tr> <tr> <td style="height: 25px"> <table cellspacing="1" cellpadding="2" style="margin: 0px auto; width: 100%;border-collapse:collapse;"> <tbody> <tr class="tdbg"> <td width="30%" align="right" nowrap="nowrap">诉求主题:</td> <td colspan="3"> <asp:Label ID="lblEditTitle" runat="server" Text="Label"></asp:Label> </td> </tr> <tr class="tdbg"> <td align="right" width="30%" nowrap="nowrap">诉求类型:</td> <td colspan="3"> <asp:Label ID="lblAppealCategory" runat="server" Text=""/> </td> </tr> <tr class="tdbg"> <td align="right" width="30%" nowrap="nowrap">诉求当前状态:</td> <td colspan="3"> <asp:Label ID="LblStatus" runat="server" Text="Label"/> </td> </tr> <tr class="tdbg"> <td align="right" style="width: 30%" nowrap="nowrap">诉求性质:</td> <td style="width: 15%"><asp:Label ID="lblAppealNature" runat="server" Text="Label"/></td> <td align="right" style="width: 25%" nowrap="nowrap">被投诉人姓名:</td> <td style="width: 30%"><asp:Label ID="lblBeAppealName" runat="server" Text="Label"/></td> </tr>
<tr class="tdbg"> <td align="right" style="width: 30%" nowrap="nowrap">被投诉人地址:</td> <td style="width: 15%"><asp:Label ID="lblBeAppealAddress" runat="server" Text="Label"/></td> <td align="right" style="width: 25%" nowrap="nowrap">投诉人:</td> <td style="width: 30%"><asp:Label ID="lblUserName" runat="server" Text="Label"/></td> </tr>
<tr class="tdbg"> <td align="right" style="width: 30%" nowrap="nowrap">诉求信息是否保密:</td> <td style="width: 15%"><asp:Label ID="lblIsSecret" runat="server" Text="Label"/></td> <td align="right" style="width: 25%" nowrap="nowrap">管理员是否同意公开:</td> <td style="width: 30%" align="right"><asp:Label ID="lblAdminIsPublic" runat="server" Text="Label"/></td> </tr>
<tr class="tdbg"> <td align="right" style="width: 30%" nowrap="nowrap">浏览数:</td> <td style="width: 15%"><asp:Label ID="lblHits" runat="server" Text="Label"/></td> <td align="right" style="width: 25%" nowrap="nowrap">回复数:</td> <td style="width: 30%"><asp:Label ID="lblReply" runat="server" Text="Label"/></td> </tr>
<tr class="tdbg"> <td align="right" style="width: 30%" nowrap="nowrap">归档:</td> <td style="width: 15%"><asp:Label ID="lblCategory" runat="server" Text=""/></td> <td align="right" style="width: 25%" nowrap="nowrap">诉求提交时间:</td> <td style="width: 30%"><asp:Label ID="lblCreateTime" runat="server" Text="Label"/></td> </tr>
<tr class="tdbg"> <td align="right" style="width: 30%" nowrap="nowrap">诉求所在地域:</td> <td colspan="3"><asp:Label ID="lblRegion" runat="server" Text=""></asp:Label></td> </tr> <tr class="tdbg"> <td colspan="4"><asp:Label ID="Label2" runat="server" Text=""/></td> </tr> <tr class="tdbg"> <td colspan="4" align="left" valign="top" nowrap="nowrap">诉求内容:</td> </tr> <tr class="tdbg"> <td colspan="4" align="left" valign="top"> <pe:ExtendedLiteral ID="LtrEditContent" runat="server" HtmlEncode="false"/> </td> </tr> </tbody> </table> </td> </tr> </tbody> </table> <!--endprint--> <br /> <div id="divBtnPrint" style="text-align:center"> <input id="BtnPrint" type="button" value="打 印…" onclick="doPrint();" /> </div> <br /> <script type="text/javascript">
<!--
function doPrint(){ bdhtml = window.document.body.innerHTML; sprnstr = "<!--startprint-->"; eprnstr = "<!--endprint-->"; prnhtml = bdhtml.substr(bdhtml.indexOf(sprnstr) + 17); prnhtml = prnhtml.substring(0, prnhtml.indexOf(eprnstr)); window.document.body.innerHTML = prnhtml; var obj = window.document.body; doZoom(obj, 18); //放大打印 window.print(); }
function doZoom(artibody, size) { if (!artibody) { return; } setChildNodesByCurrentNode(artibody,size); }
function setChildNodesByCurrentNode(node,size) { for(var i=0; i < node.childNodes.length; i++) { var artibodyChild = node.childNodes[i]; if (artibodyChild.nodeType == 1) { artibodyChild.className=""; artibodyChild.style.fontSize = size + 'px'; artibodyChild.style.fontFamily = '仿宋_GB2312,宋体,"Times New Roman",Georgia,serif'; artibodyChild.style.fontWeight = 900; if(artibodyChild.childNodes.length>0) { setChildNodesByCurrentNode(artibodyChild,size); } } } }
-->
</script> </asp:Content>
观察上面代码可以看出,打印时,window.document.body.innerHTML 被重新赋值成设定需要打印的网页部分的代码(这里是 prnhtml),然后通过递归方式调用setChildNodesByCurrentNode(artibody,size)更改相关子节点的样式,以达到全部更换相关字体大小及样式设置的目的。 |