在WQL服務器上返回裝入的驅動器

Question

我正在嘗試創建一個簡單的WQL查詢，我只在服務器上返回裝入的驅動器。這些驅動器沒有與它們相關的驅動器號。

我嘗試以下sytnax，並沒有返回結果集：

SELECT * FROM Win32_Volume WHERE DriveLetter = "" 

這是在C＃中完整的代碼示例：

string ManagementPath = string.Format(@"\\{0}\root\CIMV2", txtServerName.Text); 
ConnectionOptions DriveConnOptions = new ConnectionOptions(); 
ObjectQuery oq = new ObjectQuery(@"SELECT * FROM Win32_Volume WHERE DriveLetter = """""); 
ManagementScope Scope = new ManagementScope(ManagementPath, DriveConnOptions); 
ManagementObjectSearcher Searcher = new ManagementObjectSearcher(Scope, oq); 
ManagementObjectCollection collection = Searcher.Get(); 
foreach (ManagementObject mo in collection) 
{ 
    //do something... 
} 

Answer 1

我需要改變我的WQL語句：

SELECT * FROM Win32_Volume WHERE DriveLetter IS NULL