C# 函数

using System;using System.Collections.Generic;using System.Text;using Microsoft.Win32; //对注册表操作using System.Collections; //使用Arraylistusing System.Security.Cryptography;//加密解密using System.IO; //文件操作using System.Runtime.InteropServices;//调用DLL DllImportusing System.Management; //获取硬件信息using System.Net; //获取IP地址是用到using System.Drawing; //image using System.Net.NetworkInformation; //ping 用到using System.Text.RegularExpressions; //正则using System.Data;using System.Data.SqlClient;using Microsoft.VisualBasic; //简体转繁体时用到using System.Web; //html UrlEncode//注册表操作 public class GF_RegReadWrite { /// <summary> /// 读取路径为keypath，键名为keyname的注册表键值，缺省返回def /// </summary> /// <param name="rootkey"></param> /// <param name="keypath">路径</param> /// <param name="keyname">键名</param> /// <param name="rtn">默认为null</param> /// <returns></returns> static public bool GetRegVal(RegistryKey rootkey, string keypath, string keyname, out string rtn) { rtn = ""; try { RegistryKey key = rootkey.OpenSubKey(keypath); rtn = key.GetValue(keyname).ToString(); key.Close(); return true; } catch { return false; } } /// <summary> /// 设置路径为keypath，键名为keyname的注册表键值为keyval /// </summary> /// <param name="rootkey"></param> /// <param name="keypath"></param> /// <param name="keyname"></param> /// <param name="keyval"></param> /// <returns></returns> static public bool SetRegVal(RegistryKey rootkey, string keypath, string keyname, string keyval) { try { RegistryKey key = rootkey.OpenSubKey(keypath, true); if (key == null) key = rootkey.CreateSubKey(keypath); key.SetValue(keyname, (object)keyval); key.Close(); return true; } catch { return false; } } /// 创建路径为keypath的键 private RegistryKey CreateRegKey(RegistryKey rootkey, string keypath) { try { return rootkey.CreateSubKey(keypath); } catch { return null; } } /// 删除路径为keypath的子项 private bool DelRegSubKey(RegistryKey rootkey, string keypath) { try { rootkey.DeleteSubKey(keypath); return true; } catch { return false; } } /// 删除路径为keypath的子项及其附属子项 private bool DelRegSubKeyTree(RegistryKey rootkey, string keypath) { try { rootkey.DeleteSubKeyTree(keypath); return true; } catch { return false; } } /// 删除路径为keypath下键名为keyname的键值 private bool DelRegKeyVal(RegistryKey rootkey, string keypath, string keyname) { try { RegistryKey key = rootkey.OpenSubKey(keypath, true); key.DeleteValue(keyname); return true; } catch { return false; } } }