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using System;

using System.Collections.Generic;

using System.Linq;

using System.Runtime.Remoting.Metadata.W3cXsd2001;

using System.Security.Permissions;

using System.Text;

using Microsoft.Win32;

//注册表辅助类 Author:BingBing

public static class Regedit

{

    //自定义节点名称

    public static string NodeName = "XX";

    //SOFTWARE节点

    public static string SoftWare = "SOFTWARE";

    /// <summary>

    /// 读取指定名称的注册表的值

    /// </summary>

    /// <param name="key">注册表值的key</param>

    /// <returns></returns>

    public static string GetValue(string key)

    {

        using (var aimdir = Load(SoftWare))

        {

            using (var child = aimdir.OpenSubKey(NodeName))

            {

                if (child == null) return null;

                var registData = child.GetValue(key);

                return registData == null ? null : registData.ToString();

            }

        }

    }

    /// <summary>

    /// 注册表中写数据

    /// </summary>

    /// <param name="key">注册表值的key</param>

    /// <param name="tovalue">值</param>

    public static void AddValue(string key, string value)

    {

        using (var aimdir = Load(SoftWare))

        {

            using (var child = aimdir.OpenSubKey(NodeName, true))

            {

                if (child == null) return;

                if (ExistsValue(key, NodeName)) return;

                child.SetValue(key, value);

            }

        }

    }

    /// <summary>

    /// 删除注册表中指定的注册表项

    /// </summary>

    /// <param name="key">注册表值中的键</param>

    public static void DeleteValue(string key)

    {

        using (var aimdir = Load(SoftWare))

        {

            if (!ExistsValue(key, NodeName)) return;

            using (var child = aimdir.OpenSubKey(NodeName, true))

            {

                if (child != null)

                {

                    child.DeleteValue(key);

                }

            }

        }

    }

    /// <summary>

    /// Load

    /// </summary>

    /// <returns></returns>

    public static RegistryKey Load(string rootName)

    {

        var software = Registry.CurrentUser;

        return software.OpenSubKey(rootName, RegistryKeyPermissionCheck.ReadWriteSubTree, System.Security.AccessControl.RegistryRights.FullControl);

    }

    /// <summary>

    /// 判断指定注册表项是否存在

    /// </summary>

    /// <param name="nodeName">注册表左侧节点名称</param>

    /// <returns></returns>

    public static bool Exists(string nodeName)

    {

        var exit = false;

        using (var aimdir = Load(SoftWare))

        {

            var subkeyNames = aimdir.GetSubKeyNames();

            if (subkeyNames.Any(keyName => keyName == nodeName))

            {

                exit = true;

            }

        }

        return exit;

    }

    /// <summary>

    /// 判断指定注册表项是否存在

    /// </summary>

    /// <param name="nodeName">注册表左侧节点</param>

    /// <param name="rootName">父节点名称</param>

    /// <returns></returns>

    public static bool ExistsValue(string key, string rootName)

    {

        var exit = false;

        using (var aimdir = Load(SoftWare))

        {

            using (var child = aimdir.OpenSubKey(NodeName, true))

            {

                if (child == null) return exit;

                var subkeyNames = child.GetValueNames();

                if (subkeyNames.Any(keyName => keyName == key))

                {

                    exit = true;

                }

            }

        }

        return exit;

    }

    /// <summary>

    /// 创建

    /// </summary>

    /// <param name="name">左侧节点名称</param>

    public static void Create(string nodeName)

    {

        using (var software = Load(SoftWare))

        {

            if (!Exists(nodeName))

            {

                software.CreateSubKey(nodeName);

            }

        }

    }

    /// <summary>

    /// 跟随windows一起启动

    /// </summary>

    /// <param name="path">要启动程序的绝对路径</param>

    public static void AutoRun(string path)

    {

        using (var autorun = Load(SoftWare + @"\Microsoft\Windows\CurrentVersion\Run"))

        {

            autorun.SetValue("您的软件名", path);

        }

    }

    /// <summary>

    /// 跟随windows一起启动

    /// </summary>

    public static void RemoveAutoRun()

    {

        using (var autorun = Load(SoftWare + @"\Microsoft\Windows\CurrentVersion\Run"))

        {

            if (autorun.GetValue("您的软件名") == null) return;

            autorun.DeleteValue("您的软件名");

        }

    }

}