可用性Win32_MountPoint和Win32_Volume在Windows XP上的? [英] availability of Win32_MountPoint and Win32_Volume on Windows XP?
问题描述
从MSDN文章,我发现 - 的 http://msdn.microsoft.com/en-us/library/aa394515(V = VS.85)的.aspx - Win32_Volume和Win32_MountPoint不能在Windows XP
不过,我开发的Windows XP(64位),一个C#应用程序,我可以得到这些WMI类就好了。我的应用程序的用户将在Windows XP SP2与.NET 3.5 SP1。
谷歌搜索左右,我不能确定我是否能在这个或不计。 我是成功的,因为我的一个或多个以下的系统: - Windows XP服务包2? - 的Visual Studio 2008 SP1的安装? - .NET 3.5 SP1?
我应该使用的东西比其他WMI来获得在卷/挂载点信息?
下面是示例code,它的工作...
公共静态字典<字符串的NameValueCollection> GetAllVolumeDeviceIDs()
{
字典<字符串的NameValueCollection> RET =新字典<字符串的NameValueCollection>();
//从Win32_Volume检索信息
尝试
{
使用(ManagementClass volClass =新ManagementClass(Win32_Volume))
{
使用(ManagementObjectCollection mocVols = volClass.GetInstances())
{
//每个卷遍历
的foreach(的ManagementObject moVol在mocVols)
{
//获取卷的设备ID(将钥匙插入我们的字典)
字符串DEVID = moVol.GetPropertyValue(的DeviceID)的ToString()。
ret.Add(DEVID,新的NameValueCollection());
//Console.WriteLine("Vol:{0},DEVID);
//有关音量每个非空属性,将其添加到我们的NameValueCollection
的foreach(在moVol.Properties PropertyData P)
{
如果(p.Value == NULL)
继续;
保留[DEVID]。新增(p.Name,p.Value.ToString());
//Console.WriteLine("\t{0}:{1},p.Name,p.Value);
}
//找到该卷的挂载点
使用(ManagementObjectCollection mocMPs = moVol.GetRelationships(Win32_MountPoint))
{
的foreach(MOMP的ManagementObject在mocMPs)
{
//只在乎添加目录
//目录道具会像Win32_Directory.Name = \C:\\\\\
字符串DIR = MOMP [目录]的ToString()。
//找到开/关报价,以获得我们想要的子串
INT第一= dir.IndexOf('')+ 1;
INT最后= dir.LastIndexOf('');
字符串dirSubstr = dir.Substring(第一,最后 - 第一);
//使用GetFullPath正常化/反向转义的任何额外的反斜线
字符串FULLPATH = Path.GetFullPath(dirSubstr);
RET [DEVID]。新增(MOUNTPOINT_DIRS_KEY,完整路径);
}
}
}
}
}
}
赶上(例外前)
{
Console.WriteLine(问题从WMI检索卷信息{0} - \ N {1},ex.Message,ex.StackTrace);
返回RET;
}
返回RET;
}
我猜 Win32_MountPoint
和 Win32_Volume
班可在Windows XP Professional x64 Edition的,因为它是基于Windows Server 2003的codeBase的 。在32位版本的Windows XP,这些类不存在,执行你的任务,你需要的P / Invoke本地卷管理功能,就像蒂姆说。
From the MSDN articles I've found -- http://msdn.microsoft.com/en-us/library/aa394515(v=VS.85).aspx -- Win32_Volume and Win32_MountPoint aren't available on Windows XP.
However, I'm developing a C# app on Windows XP (64bit), and I can get to those WMI classes just fine. Users of my app will be on Windows XP sp2 with .Net 3.5 sp1.
Googling around, I can't determine whether I can count on this or not. Am I successful on my system because of one or more of the following: - windows xp service pack 2? - visual studio 2008 sp1 was installed? - .Net 3.5 sp1?
Should I use something other than WMI to get at the volume/mountpoint info?
Below is sample code that's working...
public static Dictionary<string, NameValueCollection> GetAllVolumeDeviceIDs()
{
Dictionary<string, NameValueCollection> ret = new Dictionary<string, NameValueCollection>();
// retrieve information from Win32_Volume
try
{
using (ManagementClass volClass = new ManagementClass("Win32_Volume"))
{
using (ManagementObjectCollection mocVols = volClass.GetInstances())
{
// iterate over every volume
foreach (ManagementObject moVol in mocVols)
{
// get the volume's device ID (will be key into our dictionary)
string devId = moVol.GetPropertyValue("DeviceID").ToString();
ret.Add(devId, new NameValueCollection());
//Console.WriteLine("Vol: {0}", devId);
// for each non-null property on the Volume, add it to our NameValueCollection
foreach (PropertyData p in moVol.Properties)
{
if (p.Value == null)
continue;
ret[devId].Add(p.Name, p.Value.ToString());
//Console.WriteLine("\t{0}: {1}", p.Name, p.Value);
}
// find the mountpoints of this volume
using (ManagementObjectCollection mocMPs = moVol.GetRelationships("Win32_MountPoint"))
{
foreach (ManagementObject moMP in mocMPs)
{
// only care about adding directory
// Directory prop will be something like "Win32_Directory.Name=\"C:\\\\\""
string dir = moMP["Directory"].ToString();
// find opening/closing quotes in order to get the substring we want
int first = dir.IndexOf('"') + 1;
int last = dir.LastIndexOf('"');
string dirSubstr = dir.Substring(first , last - first);
// use GetFullPath to normalize/unescape any extra backslashes
string fullpath = Path.GetFullPath(dirSubstr);
ret[devId].Add(MOUNTPOINT_DIRS_KEY, fullpath);
}
}
}
}
}
}
catch (Exception ex)
{
Console.WriteLine("Problem retrieving Volume information from WMI. {0} - \n{1}",ex.Message,ex.StackTrace);
return ret;
}
return ret;
}
I guess the Win32_MountPoint
and Win32_Volume
classes are available on Windows XP Professional x64 Edition because it's based on the Windows Server 2003 codebase. On 32-bit versions of Windows XP, these classes don't exist and to perform your task you need to P/Invoke native volume management functions, like Tim said.
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