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C#讀、寫、刪除注冊表

昵稱10504424 2012-09-12

展開全文

1.首先,必須導入空間"Microsoft.Win32"

2.利用Registry類,確定注冊表的分支(ClassesRoot,CurrentUser,Users,LocalMachine,CurrentConfig)

using Microsoft.Win32;

RegistryKey key = Registry.LocalMachine;

3.創(chuàng)建/打開/刪除注冊表項

RegistryKey key = Registry.LocalMachine;
//創(chuàng)建
//注意:注冊表路徑一定是"\\"而不是"\"
RegistryKey software = key.CreateSubKey("software\\MyApp");

//打開(true表示可以寫入)
RegistryKey software = key.OpenSubKey("software\\MyApp",true); 
RegistryKey Product = software.CreateSubKey("Product");

//刪除
key.DeleteSubKey("software\\MyApp",true);
//記得關閉,兩個都要關
key.Close();
ProductID.Close();

4.創(chuàng)建/打開/刪除鍵值

RegistryKey key = Registry.LocalMachine;
RegistryKey software = key.OpenSubKey("software\\My",true); 
//寫入
software.SetValue("ProductID", "Leo Tian's blog"); 
//讀取
string info = "";
info = software.GetValue("ProductID").ToString();
//刪除
software.DeleteValue("test");
//關閉
software.Close()

5.最后貼出兩個判斷函數(shù)

//判斷項目是否存在
private bool IsRegeditItemExist(RegistryKey RegBoot, string ItemName)
{
    if (ItemName.IndexOf("\\") <= -1)
    {
        string[] subkeyNames;
        subkeyNames = RegBoot.GetValueNames();
        foreach (string ikeyName in subkeyNames)  //遍歷整個數(shù)組
        {
            if (ikeyName == ItemName) //判斷子項的名稱
            {
                return true;
            }
        }
        return false;               
    }
    else
    {
        string[] strkeyNames = ItemName.Split('\\');
        RegistryKey _newsubRegKey = RegBoot.OpenSubKey(strkeyNames[0]);
        string _newRegKeyName = "";
        int i;
        for(i=1;i<strkeyNames.Length;i++)
        {
            _newRegKeyName = _newRegKeyName + strkeyNames[i];
            if(i!=strkeyNames.Length-1)
            {
                _newRegKeyName = _newRegKeyName + "\\";
            }
        }
        return IsRegeditItemExist(_newsubRegKey,_newRegKeyName);
    }
}

//判斷鍵值是否存在
private bool IsRegeditKeyExist(RegistryKey RegBoot, string RegKeyName)
{

    string[] subkeyNames;
    subkeyNames = RegBoot.GetValueNames();
    foreach (string keyName in subkeyNames)
    {

        if (keyName == RegKeyName)  //判斷鍵值的名稱
        {
            return true;
        }
    }
    return false;
}