在项目中加个Default.aspx窗体：
html源码：
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>
<!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>利用JavaScript实现打印</title>
</head>
<body style="text-align: center">
<form id="Form1" runat="server">
<table>
<tr>
<td style=" 466px; background-color: #ffffff; text-align: center;">
<asp:Label ID="Label1" runat="server" Font-Size="12pt" Font-Bold="True" ForeColor="Blue"></asp:Label>
</td></tr>
<tr><td style="font-size: 9pt; 466px; text-indent: 8pt; text-align: left; height: 380px;">
<asp:Label ID="Label2" runat="server" Font-Size="9pt" Height="376px" Width="430px" BorderColor="#8080FF" BorderWidth="1px" ForeColor="#404040"></asp:Label>
</td>
</tr>
<tr>
<td style="text-align: center; 466px;">
<asp:Button ID="Button1" runat="server" OnClick="Button1_Click" Text="打印" style="border-left-color: #3333ff; border-bottom-color: #3333ff; border-top-style: inset; border-top-color: #3333ff; border-right-style: inset; border-left-style: inset; border-right-color: #3333ff; border-bottom-style: inset"/>
</td>
</tr>
</table>
</form>
</body>
</html>
CS源码如下：
using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
public partial class _Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
string path = Server.MapPath("App_Data\\jytk.txt");
System.IO.StreamReader reader = new System.IO.StreamReader(path, System.Text.Encoding.Default);
this.Label1.Text = reader.ReadLine();
this.Label2.Text = reader.ReadToEnd();
reader.Close();
}
protected void Button1_Click(object sender, EventArgs e)
{
Response.Write("<script>window.print()</script>");
}
}
在App_Data下面新建一个jytk.txt
内容是要打印的
完成！！！