C# 操作註冊表RegistryHelper

 

註冊表：是Microsoft Windows中的一個重要的數據庫，此文章主要記錄一下，如何對註冊表進行增刪改查。

查看註冊表的命令：regedit或regedit.exe、regedt32或regedt32.exe

1.windows鍵加R鍵。

2.輸入命令。

3.查看。

4.代碼舉例。

①引用：

using Microsoft.Win32;

②案例：

public class RegistryHelper
{
    /// <summary>
    /// 創建註冊表項
    /// </summary>
    /// <returns></returns>
    public static bool CreateSubKey()
    {
        try
        {
            RegistryKey key = Registry.LocalMachine;
            RegistryKey software = key.CreateSubKey("SOFTWARE\\Test");
            if (software != null) return true;
            else return false;
        }
        catch (Exception)
        {
            return false;
        }
    }

    /// <summary>
    /// 打開註冊表項
    /// </summary>
    /// <returns></returns>
    public static bool OpenSubKey()
    {
        try
        {
            RegistryKey key = Registry.LocalMachine;
            RegistryKey software = key.OpenSubKey("SOFTWARE\\Test", true);
            return true;
        }
        catch (Exception)
        {
            return false;
        }
    }

    /// <summary>
    /// 刪除註冊表項
    /// </summary>
    /// <returns></returns>
    public static bool DeleteSubKey()
    {
        try
        {
            RegistryKey key = Registry.LocalMachine;
            key.DeleteSubKey("SOFTWARE\\Test", true);
            key.Close();
            return true;
        }
        catch (Exception)
        {
            return false;
        }
    }

    /// <summary>
    /// 鍵值的創建與修改[無則創建,有則修改]
    /// </summary>
    /// <returns></returns>
    public static bool SetValue()
    {
        try
        {
            RegistryKey key = Registry.LocalMachine;
            RegistryKey software = key.OpenSubKey("SOFTWARE\\Test", true);
            software.SetValue("name", "DuanXuWen");
            key.Close();
            return true;
        }
        catch (Exception)
        {
            return false;
        }
    }

    /// <summary>
    /// 獲取鍵對應的值
    /// </summary>
    /// <returns></returns>
    public static string GetValue()
    {
        try
        {
            RegistryKey key = Registry.LocalMachine;
            RegistryKey software = key.OpenSubKey("SOFTWARE\\Test");
            string value = software.GetValue("name").ToString();
            software.Close();
            return value;
        }
        catch (Exception)
        {
            return "";
        }
    }

    /// <summary>
    ///  刪除鍵值
    /// </summary>
    /// <returns></returns>
    public static bool DeleteValue()
    {
        try
        {
            RegistryKey delKey = Registry.LocalMachine.OpenSubKey("SOFTWARE\\Test", true);
            delKey.DeleteValue("name");
            delKey.Close();
            return true;
        }
        catch (Exception)
        {
            return false;
        }
    }

    /// <summary>
    /// 註冊表項是否存在
    /// </summary>
    /// <returns></returns>
    private bool IsRegeditItemExist()
    {
        string[] subkeyNames;
        RegistryKey hkml = Registry.LocalMachine;
        RegistryKey software = hkml.OpenSubKey("SOFTWARE");
        subkeyNames = software.GetSubKeyNames();
        foreach (string keyName in subkeyNames)
        {
            if (keyName == "Test")
            {
                hkml.Close();
                return true;
            }
        }
        hkml.Close();
        return false;
    }

    /// <summary>
    /// 鍵是否存在
    /// </summary>
    /// <returns></returns>
    private bool IsRegeditKeyExit()
    {
        string[] subkeyNames;
        RegistryKey hkml = Registry.LocalMachine;
        RegistryKey software = hkml.OpenSubKey("SOFTWARE\\Test");
        subkeyNames = software.GetValueNames();
        foreach (string keyName in subkeyNames)
        {
            if (keyName == "name")
            {
                hkml.Close();
                return true;
            }
        }
        hkml.Close();
        return false;
    }
}