C#获取硬盘编号的方法

ManagementClass mc = new ManagementClass("Win32_PhysicalMedia");
//Win32_DiskDrive不包含SerialNumber属性。
ManagementObjectCollection moc = mc.GetInstances();
string strID = null ; 
foreach( ManagementObject mo in moc ) 
{ 
　　strID = mo.Properties["SerialNumber"].Value.ToString();
　　break; 
}
textBox1.Text += "硬盘 ID:" + strID;