Asp.net获取Web打印次数

   在用户单击“确认”按钮开始打印时，控件向服务端发送一个HTTP 的POST 消息，这样服务端收到此消息后就可以记录在什么时候打印了报表，对于打印了什么报表，是何人打印的，我们可以在POST 消息中加上这两个参数或者用Session 就可以解决这个问题。

     下面我详细的讲解一下怎样利用我设计的Web 打印控件实现获取Web 打印的实际打印次数。讲解以ASP.NET 为例，当然其它语言也可以举一反三，很容易实现。因为调用打印控件统一是JavaScirpt ，提交服务器的数据是Http 协议的Post 方式，这些都是通用的。

     获取Web 打印的实际打印次数的部分代码如下：

           string FileValue, PrintValue, ParaName, ParaValue;

            FileValue = FileToString(".\\Frp\\DepositAmt.fr3");
            ParaName = "ShopName`~PrintDepositAdd`~PrintPaperNo`~Title";  //`~为各参数的分隔符
            ParaValue = "测试酒楼"
                      + "`~说明：本单据为贵客押金收取凭证，盖章有效。退房时请出示，遗失者自负，请妥善保存。退房时间为12:00时，延时退房18:00时以前按半天房费收取，18:00时以后算全天房价。押金单有效期为一个月，过期作废。       贵重物品请交前台寄存，未寄存丢失自负。      谢谢！"
                      + "`~身份证：4325011980639512"
                      + "`~押金单";

            SqlConnection ConPrintTest = new SqlConnection(ConfigurationManager.ConnectionStrings["PrintTestConnectionString"].ToString());
            ConPrintTest.Open();
            DataSet DsCashLog = new DataSet();
            SqlDataAdapter DaCashLog = new SqlDataAdapter("Select top 1 CashNo, CashDate, CashAmt, PayName, GuestName, RoomNo, ItemRemark, CashUserName, Remark From CashLog", ConPrintTest);
            DaCashLog.FillSchema(DsCashLog, SchemaType.Source, "CashLog");
            DaCashLog.Fill(DsCashLog, "CashLog");

            PrintValue = TableToXml(DsCashLog.Tables["CashLog"]);

            DsCashLog.Dispose();
            ConPrintTest.Close();Ext.grid.EditorGridPanel 中combo的显示异常

            string ScriptStr;

            ScriptStr = "<script language='javascript'>window.onload = function() { try { var ObjPrintMange =  new ActiveXObject('WebPrint.WebPrintUnit'); } catch(e) { if( confirm('打印控件未安装，现在下载吗?') ) { window.location='./PrintActivex.exe'; } return; } var OldVersion=ObjPrintMange.Version; NewVerion='5.0(2011-08-01)'; if(OldVersion < NewVerion) { ObjPrintMange = null; alert('打印控件需升级。请先进行下载，下载后关闭IE，然后安装升级版。'); window.location='./PrintActivex.exe'; return;  } "
                     + " ObjPrintMange.CheckReg('公司名称', '3B8E5B998A3125EE89983EA940BB2AEE'); "  //注册码
                     + " ObjPrintMange.PrintURL='http://www.xinyuerj.com/ASPPost/PrintNum.asp?FileName=DepsitAmt.fr3'; "
                     + "ObjPrintMange.ShowReport('"
                     + FileValue + "' , '"
                     + ParaName + "', '"
                     + ParaValue + "', '"
                     + PrintValue + "', '', '', '', '', '');"
                     + "ObjPrintMange = null; } </script>";
            ScriptStr = ScriptStr.Replace(System.Environment.NewLine, string.Empty);

            Response.Write(ScriptStr);

PrintURL 属性，设置此属性，则在报表打印时，在弹出的选择打印机的窗口后点击“确定”按钮时，通过Http 的Post 方式直接提交到所设置的URL 页面，用户可以在URL 处理用户已打印的份数。Post 的字段名指定为PrintCopy ，此参数为用户打印时所选择的份数，默认为1 。

   接收实际打印的消息的代码如下：手与iPad2

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.IO;
using System.Text;

namespace Upload
{
    public partial class Show : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {
            string FileName, PrintCopy;

            FileName = Request.QueryString["FileName"];
            PrintCopy = Request.Form["PrintCopy"];

            WriteReportFile(FileName, PrintCopy);

            Response.Write("File Name" + FileName);
            Response.Write("Print Copy" + PrintCopy);
        }

        private void WriteReportFile(string FileName, string PrintCopy)
        {
            if ( FileName == null  || FileName == "" || FileValue == null  ||FileValue == "")
                return;

            File.WriteAllText(Server.MapPath(FileName), PrintCopy);
        }
    }
}