磁盘信息

using System.Management;

using System.IO; //System.Management.dll

           //创建WMI查询
            ManagementObjectSearcher searcher = new ManagementObjectSearcher("select * from win32_logicaldisk");
            ManagementObjectCollection moCollection = searcher.Get();//获取磁盘信息集合
            foreach (ManagementObject disk in moCollection)
            {
                string DriveType = disk["DriveType"].ToString();
                //disk["DriveType"]共有6中可能值，分别代表如下意义：
                //1:No type   2:Floppy disk   3:Hard disk
                //4:Removable drive or network drive   5:CD-ROM   6:RAM disk
                //本处只列出固定驱动器（硬盘分区）的情况
                if (DriveType == "3")
                    label1.Text += string.Format("Name='{0}'\nFileSystem='{1}'\nSize='{2}'\nFreeSpace='{3}'\nVolumeSerialNumber='{4}'\n ",
                        disk["Name"].ToString(),
                        disk["FileSystem"].ToString(),
                        disk["Size"].ToString(),//info.TotalSize, //总大小
                        disk["FreeSpace"].ToString(),//info.TotalFreeSpace,//可用空闲空间量
                        disk.GetPropertyValue("VolumeSerialNumber").ToString());

            }
            DriveInfo info = new DriveInfo("C");//创建对象
            //输出磁盘容量和剩余空间
            label1.Text += string.Format("磁盘格式{0}\n可用空间大小为{3} bytes",
                info.DriveFormat, 
                info.AvailableFreeSpace);