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  • Web程序怎么调用浏览器的打印功能打印小票
  • 发布于 2个月前
  • 367 热度
    0 评论
概述
在html页下使用Epson P60II 热敏纸下打印小票，使用的打印方案为调用window.print()。

代码实现
1、定义窗体，设置宽度和高度
<body onload="window.external.Print(0,0);" style="margin-top:0px;">
	<form id="form1" runat="server">
		<div align="center" valign="top" id="PrintDoc">
			<table style="width:4.8cm; height:9.9cm; border-width:1px; border-color:Red; border-style:dashed">
				<tr align="center" valign="top">
					<td>
						<asp:Label id="Label_proname" runat="server">
						</asp:Label>
					</td>
				</tr>
			</table>
		</div>
	</form>
</body>
2、使用ActiveXObject，创建   Scripting.FileSystemObject
function print_onclick() {
  var objfs = new ActiveXObject("Scripting.FileSystemObject");
  var objprinter=objfs.CreateTextFile("LPT1:",true);
  objprinter.Write(String.fromCharCode(0x1B) + "@");
  objprinter.Write(String.fromCharCode(0x1B) + String.fromCharCode(0x69));
  objprinter.Close();
}
3、设置隐藏模式打印
 <style media="print">.Noprint { DISPLAY: none }</style>
4、填充数据
 private void ListBind()
    {
        try
        {
            string strVoucherID = Request.QueryString["voucherid"];
            if (strVoucherID != null && strVoucherID != string.Empty)
            {
                this.Label_proname.Text = this.DataBase.GetShopVoucherDetail(strVoucherID);
                this.DataBase.VoucherPrintUpdate(strVoucherID, this.DataBase.Areaid);
            }

        }
        catch (Exception ex)
        {
            Console.WriteLine(ex.Message);
        }

    }
完整代码
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Print.aspx.cs"
Inherits="Print" enableEventValidation="false" validateRequest="false"
%>
	<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
	<html xmlns="http://www.w3.org/1999/xhtml">
		<head runat="server">
			<title>
				堆代码-duidaima.com
			</title>
			<style media="print">
				.Noprint { DISPLAY: none }
			</style>
			<script type='text/javascript'>
				function print_onclick() {
					var objfs = new ActiveXObject("Scripting.FileSystemObject");
					var objprinter = objfs.CreateTextFile("LPT1:", true);
					objprinter.Write(String.fromCharCode(0x1B) + "@");
					objprinter.Write(String.fromCharCode(0x1B) + String.fromCharCode(0x69));
					objprinter.Close();
				}
			</script>
			<script language="javascript">
				function PrintCutrefresh() {
					print_onclick();

				}
				setTimeout('PrintCutrefresh()', 7000); //指定7秒后切纸
				
			</script>
		</head>
		<body onload="window.external.Print(0,0);" style="margin-top:0px;">
			<form id="form1" runat="server">
				<div align="center" valign="top" id="PrintDoc">
					<table style="width:4.8cm; height:9.9cm; border-width:1px; border-color:Red; border-style:dashed">
						<tr align="center" valign="top">
							<td>
								<asp:Label id="Label_proname" runat="server">
								</asp:Label>
							</td>
						</tr>
					</table>
				</div>
			</form>
		</body>
	
	</html>


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