asp.net中的“按需打印”(打印你需要打印的部分) 实现代码

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：

<%@ 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>

本文asp.net中的“按需打印”(打印你需要打印的部分) 实现代码到此结束。提高和成长的过程总是有许多的困难与坎坷的。有时我们是由于志向不明，没有明确的目的而碌碌无为。可是还有另外一种情景，是由于我们自我的退缩，与自我“亲密”的妥协没有坚持到底的意志，才使得机会逝去，颗粒无收。小编再次感谢大家对我们的支持！