C#调用WMI
using   System.Management;
using   ROOT.CIMV2.Win32;


    ConnectionOptions   options   =   new   ConnectionOptions();
                options.Username   =   "administrator ";
                //设定用户的口令
                options.Password   =   "123 ";
                ManagementScope   Conn   =   new   ManagementScope( "\\\\192.168.0.2\\root\\cimv2 ",   options);
              //   LogicalDisk   dskD   =   new   LogicalDisk(Conn,   new   ManagementPath( "win32_LogicalDisk.DeviceId=\ "d:\ " "));
                this.Response.Write( "FileSystem: "   +   dskD.FileSystem   +   " </br> ");
                this.Response.Write( "Size: "   +   dskD.Size   +   " </br> ");
                this.Response.Write( "FreeSpace: "   +   dskD.FreeSpace   +   " </br> ");
                this.Response.Write( "DriveType: "   +   dskD.DriveType   +   " </br> ");


这段代码是获取192.168.0.2的D盘信息，请问高手怎么可以获得机器上所有分区的信息，( "win32_LogicalDisk.DeviceId=\ "d:\ " ")不是使用指定盘的.

------解决方案--------------------
试试：
try
{
ManagementObjectSearcher searcher =
new ManagementObjectSearcher( "Select * From Win32_LogicalDisk ");
foreach (ManagementObject mo in searcher.Get())
{
// mo[ "FileSystem "]，文件系统，如“FAT32”
// mo[ "FreeSpace "]，剩余空间，如“4554891264”（4G多）
// mo[ "Name "]，卷标，如“C：”
// mo[ "Size "]，大小，如“10476945408”（10G）
}
}
catch
{
}

参见
http://www.cnblogs.com/KissKnife/archive/2006/11/25/572281.html