如何删除C＃中的注册表值

Question

我可以使用Microsoft.Win32.Registry类获取/设置注册表值。例如，

Microsoft.Win32.Registry.SetValue(
    @"HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run", 
    "MyApp", 
    Application.ExecutablePath); 

但我无法删除任何值。我如何删除注册表值？

Answer 1

要删除你的问题设置的值：

string keyName = @"Software\Microsoft\Windows\CurrentVersion\Run"; 
using (RegistryKey key = Registry.CurrentUser.OpenSubKey(keyName, true)) 
{ 
    if (key == null) 
    { 
     // Key doesn't exist. Do whatever you want to handle 
     // this case 
    } 
    else 
    { 
     key.DeleteValue("MyApp"); 
    } 
} 

看的文档为Registry.CurrentUser，RegistryKey.OpenSubKey和RegistryKey.DeleteValue获取更多信息。

Answer 2

RegistryKey.DeleteValue

Answer 3

RegistryKey registrykeyHKLM = Registry.LocalMachine; 
string keyPath = @"Software\Microsoft\Windows\CurrentVersion\Run\MyApp"; 

registrykeyHKLM.DeleteValue(keyPath); 
registrykeyHKLM.Close(); 

Answer 4

要删除树（〜递归）的所有子项/值，下面是我使用的扩展方法：

public static void DeleteSubKeyTree(this RegistryKey key, string subkey, 
    bool throwOnMissingSubKey) 
{ 
    if (!throwOnMissingSubKey && key.OpenSubKey(subkey) == null) { return; } 
    key.DeleteSubKeyTree(subkey); 
} 

用法：

string keyName = @"Software\Microsoft\Windows\CurrentVersion\Run"; 
using (RegistryKey key = Registry.CurrentUser.OpenSubKey(keyName, true)) 
{ 
    key.DeleteSubKeyTree("MyApp",false); 
}