在编写工具检查硬盘信息时，总结常用到的类：
Win32_DiskDrive
这个用了检查整个硬盘的信息，如果电脑只有一个硬盘，那只显示一条信息。参考如下代码，AddTextBox为自定义显示函数。（MSDN class 查询：https://msdn.microsoft.com/en-us/library/aa394132(v=vs.85).aspx）
ManagementClass mc = new ManagementClass("Win32_DiskDrive");
ManagementObjectCollection moc = mc.GetInstances(); foreach (ManagementObject mo in moc){AddTextBox(">>硬盘详细信息----------------------------------------------------------"); AddTextBox("Model: " + Convert.ToString(mo.Properties["Model"].Value)); //name stata 256AddTextBox("Description: " + Convert.ToString(mo.Properties["Description"].Value)); //diskdriverAddTextBox("InterfaceType: " + Convert.ToString(mo.Properties["InterfaceType"].Value)); //scsiAddTextBox("MediaType: " + Convert.ToString(mo.Properties["MediaType"].Value)); //fixed hard diskstring strSize=Convert.ToString( mo.Properties["Size"].Value);AddTextBox("size:"+Convert.ToString( mo.Properties["Size"].Value)+"KB");var aaa = Convert.ToString( mo.Properties["Size"].Value);UInt64 bbb=UInt64.Parse(aaa);totalsise = (float)Math.Round(bbb / 1000 / 1000 / 1000.0, 3);totalsise2 = (float)Math.Round(bbb / 1024 / 1024 / 1024.0, 3);AddTextBox("size(除1000): " + totalsise.ToString()+"GB");AddTextBox("size(除1024): " + totalsise2.ToString() + "GB");}Win32_Volume
当检查C盘，D盘或光盘，可以用到这个class，DriverLetter显示C:\，D:\等。通过查看DriverType的数值能判定当前盘符是哪种类型。参考：https://msdn.microsoft.com/en-us/library/aa394515(v=vs.85).aspx
ManagementObjectSearcher deviceList = new ManagementObjectSearcher("Select DriveLetter, DeviceID,DriveType,Name from Win32_Volume ");foreach (ManagementObject device in deviceList.Get()){string name = Convert.ToString(device.GetPropertyValue("DriveLetter"));string DriveType = Convert.ToString(device.GetPropertyValue("DriveType"));if (DriveType == "3" && name != ""){//..}}DriveInfo.GetDrives()
这个函数功能和上面Win32_Volume功能类似，但没Win32_Volume那么多信息查询。优点在于用起来方便，易懂，官方已经给出例子：（https://msdn.microsoft.com/zh-cn/library/system.io.driveinfo.getdrives.aspx）
DriveInfo[] allDrives = DriveInfo.GetDrives();foreach (DriveInfo d in allDrives){Console.WriteLine("Drive {0}", d.Name);Console.WriteLine(" Drive type: {0}", d.DriveType);if (d.IsReady == true){Console.WriteLine(" Volume label: {0}", d.VolumeLabel);Console.WriteLine(" File system: {0}", d.DriveFormat);Console.WriteLine(" Available space to current user:{0, 15} bytes", d.AvailableFreeSpace);Console.WriteLine(" Total available space: {0, 15} bytes",d.TotalFreeSpace);Console.WriteLine(" Total size of drive: {0, 15} bytes ",d.TotalSize);}}
