C#注册表的读，写，删除，查找_c#web删除功能怎么写-优快云博客

本文介绍了一个使用C#进行Windows注册表读取、写入、查询和删除操作的示例程序。通过具体的代码实现展示了如何安全地操作注册表，包括创建子键、设置键值以及检查键的存在状态。

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using system;
using system.collections;
using system.configuration;
using system.data;
using system.web;
using system.web.security;
using system.web.ui;
using system.web.ui.htmlcontrols;
using system.web.ui.webcontrols;
using system.web.ui.webcontrols.webparts;
using microsoft.win32;
public partial class register : system.web.ui.page
{
 protected void page_load(object sender, eventargs e)
 {
 response.write("这里是读取到的信息"+" ");
 readregedit();
 response.write(" ");
 response.write("这里将要写入信息swort/swort-test" + " ");
 writeregedit();
 response.write("写入结束" + " ");
 response.write("查看存在与否" + " ");
 existsregedit();
 response.write("查看结束" + " ");
 response.write("删除" + " ");
 deleteregedit();
 response.write("删除结束" + " ");
 response.write("查看存在与否" + " ");
 existsregedit();
 response.write("查看结束" + " ");
 }
 /// <summary>
 /// 注册表的读取
 /// </summary>
 /// <returns></returns>
 public void readregedit()
 {
 registrykey rk = registry.currentuser;
 registrykey software = rk.opensubkey("software");
 registrykey microsoft = software.opensubkey("microsoft");
 registrykey windows = microsoft.opensubkey("windows");
 registrykey current = windows.opensubkey("currentversion");
 registrykey explorer = current.opensubkey("explorer");
 registrykey shell = explorer.opensubkey(@"shell folders");
 foreach (string b in shell.getvaluenames())//这里用shell.getvaluenames()不是shell.getsubkeynames()
 {
 response.write( b+" "+ shell.getvalue(b).tostring());
 response.write(" ");

 }


 }
 /// <summary>
 /// 注册表的写入
 /// </summary>
 /// <returns></returns>
 public bool writeregedit()
 {
 try
 {
 registrykey rk = registry.currentuser;
 registrykey software = rk.opensubkey("software");
 registrykey microsoft = software.opensubkey("microsoft");
 registrykey windows = microsoft.opensubkey("windows");
 registrykey current = windows.opensubkey("currentversion");
 registrykey explorer = current.opensubkey("explorer");
 registrykey shell = explorer.opensubkey(@"shell folders", true);//这里必须加true就是得到写入权限
 registrykey key = shell.createsubkey("swort");//创建swort目录
 key.setvalue("swort", "test");
 //在swort目录下建立写入swort test
 response.write("写入成功！！！！！！！！！");
 return true;
 }
 catch
 {
 return false;
 }

 }
 /// <summary>
 /// 注册表的删除
 /// </summary>
 /// <returns></returns>
 public bool deleteregedit()
 {
 try
 {
 registrykey rk = registry.currentuser;
 registrykey software = rk.opensubkey("software");
 registrykey microsoft = software.opensubkey("microsoft");
 registrykey windows = microsoft.opensubkey("windows");
 registrykey current = windows.opensubkey("currentversion");
 registrykey explorer = current.opensubkey("explorer");
 registrykey shell = explorer.opensubkey(@"shell folders",true);
 registrykey swort = shell.opensubkey("swort",true);//这里必须加true就是得到写入权限
 swort.deletevalue("swort");//删除swort的值 这个连键值一起删除了剩下一个
 shell.deletesubkey("swort",false);//删除swort这个目录 要删除这个目录必须具有权限

 response.write("删除成功！！！！！！！！！");
 return true;
 }
 catch
 {
 return false;
 }
 return true;
 }
 /// <summary>
 /// 查询某个键值是否存在
 /// </summary>
 /// <returns></returns>
 public bool existsregedit()
 {
 registrykey rk = registry.currentuser;
 registrykey software = rk.opensubkey("software");
 registrykey microsoft = software.opensubkey("microsoft");
 registrykey windows = microsoft.opensubkey("windows");
 registrykey current = windows.opensubkey("currentversion");
 registrykey explorer = current.opensubkey("explorer");
 registrykey shell = explorer.opensubkey(@"shell folders");
 if (shell.subkeycount != 0)
 {
 registrykey swort = shell.opensubkey("swort");
 foreach (string b in swort.getvaluenames())
 {
 if (b == "swort")
 {
 response.write("存在这个键！");
 return true;
 }

            }
            response.write("不存在这个键！");
            return false;
        }
        else
        { response.write("不存在这个键！");
        return false;
        }
    }
}