asp.net修改注册表（页面打印时页眉、页脚、页边距、背景颜色和图像）

using System;

using System.Collections.Generic;

using System.Web;

using System.Web.UI;

using System.Web.UI.WebControls;

using Microsoft.Win32;



public partial class PrintSetDefault : System.Web.UI.Page

{

    protected void Page_Load(object sender, EventArgs e)

    {

        if (ReadReg() == 1)

        {

            if (WriteReg() == 1)

            {

                ReadReg();

                Response.Write("Game over!");

            }

        }

    }







    /// <summary>

    /// 读注册表

    /// </summary>

    /// <returns></returns>

    protected int ReadReg()

    {

       //读注册表

        RegistryKey regRead;

       //读取HKEY_CURRENT_USER主键里的子键

        regRead = Registry.CurrentUser.OpenSubKey("Software\\Microsoft\\Internet Explorer\\PageSetup", true);

       if (regRead == null) //如果该子键不存在

        {

            Response.Write("PageSetup:null</br>");

            return 0;

        }

        else

        {

            Response.Write("PageSetup:OK</br>");



            object obj = regRead.GetValue("header") == null ? "null" : regRead.GetValue("header"); //读取值

            Response.Write("header:" + obj.ToString() + "</br>");



            obj = regRead.GetValue("footer") == null ? "null" : regRead.GetValue("footer"); //读取值

            Response.Write("footer:" + obj.ToString() + "</br>");



            obj = regRead.GetValue("margin_left") == null ? "null" : regRead.GetValue("margin_left"); //读取值

            Response.Write("margin_left:" + obj.ToString() + "</br>");



            obj = regRead.GetValue("margin_right") == null ? "null" : regRead.GetValue("margin_right"); //读取值

            Response.Write("margin_right:" + obj.ToString() + "</br>");



            obj = regRead.GetValue("margin_top") == null ? "null" : regRead.GetValue("margin_top"); //读取值

            Response.Write("margin_top:" + obj.ToString() + "</br>");



            obj = regRead.GetValue("margin_bottom") == null ? "null" : regRead.GetValue("margin_bottom"); //读取值

            Response.Write("margin_bottom:" + obj.ToString() + "</br>");



            obj = regRead.GetValue("Print_Background") == null ? "null" : regRead.GetValue("Print_Background"); //读取值

            Response.Write("Print_Background:" + obj.ToString() + "</br>");



            Response.Write("</br>");

        }

        regRead.Close();

        return 1;

    }



    /// <summary>

    /// 写注册表

    /// </summary>

    protected int WriteReg()

    {

        //写注册表

         RegistryKey regWrite;

        //往HKEY_CURRENT_USER主键里的写子键

         //如果子键已经存在系统会自动覆盖它

         regWrite = Registry.CurrentUser.CreateSubKey("Software\\Microsoft\\Internet Explorer\\PageSetup");

        //往Test子键里添数据项

         regWrite.SetValue("header", "&w&bPage &p of &P");

        regWrite.SetValue("footer", "&u&b&d");

        regWrite.SetValue("margin_left", 0.750000);

        regWrite.SetValue("margin_right", 0.750000);

        regWrite.SetValue("margin_top", 0.750000);

        regWrite.SetValue("margin_bottom", 0.750000);

        regWrite.SetValue("Print_Background", "no");

        //关闭该对象

         regWrite.Close();



        return 1;



    }

}

以上结果是恢复成默认值。也可以改为0。