动态地从注册表

Question

越来越DLL路径名我有被安装的软件时，它被安装在

HKEY_LOCAL_MACHINE\\SOFTWARE for 32-bit OS和

HKEY_CURRENT_USER\\SOFTWARE for 64-bit OS. 

如何检测基于注册表键的dll路径的dll？

我不想像这样硬编码。

RegistryKey registryKey = Registry.LocalMachine.OpenSubKey("Software//NodeName") 

我可以尝试检测32位或64位操作系统，并完成类似

如果32-bit

RegistryKey registryKey = Registry.LocalMachine.OpenSubKey("Software//NodeName") 

如果64-bit

RegistryKey registryKey = Registry.CurrentUser.OpenSubKey("Software//NodeName") 

但有什么办法我可以直接检测dll的路径，例如，如果指定了dll名称，并且h我是否做整个注册表检查并找到它的路径名？

Answer 1

HKEY_CLASSES_ROOT \ CLSID包含系统上所有已注册COM文件（.ocx，.dll，.ax）的列表，无论是32位还是64位都无关紧要。

CLSID下的密钥由每个COM的生成的GUID来表示。

而且finaly进GUID键，有InprocServer32的子键，在它的默认值包含COM文件到SISTEM的路径，这样你可以找到它，如下所示：

VB代码：

''' <summary> 
    ''' Search and Find Registry Function 
    ''' </summary> 
    Public Shared Function SearchRegistry(ByVal dllName As String) As String 

     'Open the HKEY_CLASSES_ROOT\CLSID which contains the list of all registered COM files (.ocx,.dll, .ax) 
     'on the system no matters if is 32 or 64 bits. 
     Dim t_clsidKey As RegistryKey = Registry.ClassesRoot.OpenSubKey("CLSID") 

     'Get all the sub keys it contains, wich are the generated GUID of each COM. 
     For Each subKey In t_clsidKey.GetSubKeyNames.ToList 

      'For each CLSID\GUID key we get the InProcServer32 sub-key . 
      Dim t_clsidSubKey As RegistryKey = Registry.ClassesRoot.OpenSubKey("CLSID\" & subKey & "\InProcServer32") 

      If Not t_clsidSubKey Is Nothing Then 

       'in the case InProcServer32 exist we get the default value wich contains the path of the COM file. 
       Dim t_valueName As String = (From value In t_clsidSubKey.GetValueNames() Where value = "")(0).ToString 

       'Now gets the value. 
       Dim t_value As String = t_clsidSubKey.GetValue(t_valueName).ToString 


       'And finaly if the value ends with the name of the dll (include .dll) we return it 
       If t_value.EndsWith(dllName) Then 

        Return t_value 

       End If 

      End If 

     Next 

     'if not exist, return nothing 
     Return Nothing 

    End Function 

C＃代码：

/// <summary> 
    /// Search and Find Registry Function 
    /// </summary> 
    public static string SearchRegistry(string dllName) 
    { 

     //Open the HKEY_CLASSES_ROOT\CLSID which contains the list of all registered COM files (.ocx,.dll, .ax) 
     //on the system no matters if is 32 or 64 bits. 
     RegistryKey t_clsidKey = Registry.ClassesRoot.OpenSubKey("CLSID"); 

     //Get all the sub keys it contains, wich are the generated GUID of each COM. 

     foreach (object subKey_loopVariable in t_clsidKey.GetSubKeyNames.ToList) { 
      subKey = subKey_loopVariable; 
      //For each CLSID\GUID key we get the InProcServer32 sub-key . 
      RegistryKey t_clsidSubKey = Registry.ClassesRoot.OpenSubKey("CLSID\\" + subKey + "\\InProcServer32"); 


      if ((t_clsidSubKey != null)) { 
       //in the case InProcServer32 exist we get the default value wich contains the path of the COM file. 
       string t_valueName = (from value in t_clsidSubKey.GetValueNames()where string.IsNullOrEmpty(value))(0).ToString; 

       //Now gets the value. 
       string t_value = t_clsidSubKey.GetValue(t_valueName).ToString; 


       //And finaly if the value ends with the name of the dll (include .dll) we return it 

       if (t_value.EndsWith(dllName)) { 
        return t_value; 

       } 

      } 

     } 

     //if not exist, return nothing 
     return null; 

    } 

Answer 2

在WOW64，某些注册表项被重定向。当32位或64位应用程序针对重定向的键进行注册表调用时，注册表重定向程序会拦截该调用并将其映射到键的相应物理注册表位置。

对于64位试图找到HKEY_CLASSES_ROOT \ Wow6432Node \ CLSID值\

http://msdn.microsoft.com/en-us/library/windows/desktop/ms724072(v=vs.85).aspx