Question

asp.net（C#）如何实现web小票打印功能？以前从没涉及过，请高手们帮帮忙~THANK YOU！

最好是有实例给我参考下，谢谢！

Answer 1

有两种方法:
1.纯html + javascript
-------print.js---------------------------
var hkey_root, hkey_path, hkey_key;
hkey_root = "HKEY_CURRENT_USER";
hkey_path = "\\Software\\Microsoft\\Internet Explorer\\PageSetup\\";

//网页打印时清空页眉页脚
function pagesetup_null() {
try {
var RegWsh = new ActiveXObject("WScript.Shell")
hkey_key = "header"
RegWsh.RegWrite(hkey_root + hkey_path + hkey_key, "")
hkey_key = "footer"
RegWsh.RegWrite(hkey_root + hkey_path + hkey_key, "")
} catch (e) {
}
}

//网页打印的时恢复页眉页脚为默认值
function pagesetup_default() {
try {
var RegWsh = new ActiveXObject("WScript.Shell")
hkey_key = "header"
RegWsh.RegWrite(hkey_root + hkey_path + hkey_key, "&w&bPage &p of &P")
hkey_key = "footer"
RegWsh.RegWrite(hkey_root + hkey_path + hkey_key, "&u&b&d")
} catch (e) {
}
}

function doPrint(printDiv) {
try {
pagesetup_null();

newwin = window.open("", "newwin", "height=900,width=700,toolbar=no,scrollbars=auto,menubar=no");
newwin.document.body.innerHTML = document.getElementById(printDiv).innerHTML;
newwin.window.print();
newwin.window.close();
pagesetup_default();
} catch (e) { }
}
----------------------------------------------------------------------------------------
前面:
<script language=javascript src=printer.js></script>

<div>
DIV1 , do not print me
</div>

<div id="myDiv">
Line2 , need print
</div>

<div>
Line3 , do not print me</div>
<div>
<input type="button" id="bt" onclick="javascript:doPrint('myDiv')" value="Print" />
-----------------------------------------------------------------------------------------------------------

上面的方法简单好用，只需要把打印的内容放在mydiv里面就行了。
但是如果对方访问的时候没有加域，没有权限去修改别人的注册表的话，会出现页眉页脚。

2.用水晶报表做

追问

小票高度是随着商品数量改变的，这个高度怎么能让它自动加呢？

Answer 2

用并口打印机，比如POS58或者EPSON等微打，装好驱动，设置成默认打印机
打印页面版面调整好，主要注意超宽的地方，可以用表格限制
调用window.print()打印即可

set objfs=CreateObject( "Scripting.FileSystemObject ") '创建FileSystem组件对象的实例
set objprinter=objfs.CreateTextFile ( "LPT1: ",true) '建立与打印机的连接
objprinter.Writeline "万年春贵宾卡结账单 客户联 " '输出打印的内容
objprinter.Writeline "------------------------------- "
objprinter.Writeline "日期 "&chr(58)&date()& " 卡号 "&chr(58)&code
objprinter.Writeline " "
objprinter.Writeline "消费金额 "&chr(58)&formatcurrency(sjmoney)
objprinter.Writeline " "
objprinter.Writeline "享受 "&codezk& "折优惠 "
objprinter.Writeline " "
objprinter.Writeline "实收金额 "&chr(58)&formatcurrency(money)
objprinter.Writeline " "
objprinter.Writeline "------------------------------- "
objprinter.Writeline " "
objprinter.Writeline "收银员 "&chr(58)&admin& " 顾客签名：_________ "
objprinter.Writeline chr(13)
objprinter.Writeline chr(13)
objprinter.Writeline chr(13)

以前写的，你试一下