.Net 2.0中的DriveInfo类

在.Net 1.1中,要获得磁盘信息,只有通过Win32的API来获得,例如:

// 获取磁盘剩余空间;
[DllImport(  " kernel32.dll " , EntryPoint = " GetDiskFreeSpaceA "  )]
public   static   extern   int  GetDiskFreeSpace( string  lpRootPathName, ref   int  lpSectorsPerCluster,
                                                                                                           
ref   int  lpBytesPerSector,
                                                                                                           
ref   int  lpNumberOfFreeClusters,
                                                                                                           
ref   int  lpTotalNumberOfClusters);

// 获取磁盘类型;
[DllImport(  " kernel32.dll " , EntryPoint = " GetDriveTypeA "  )]
public   static   extern   int  GetDriveType( string  nDrive);

然而在.Net2.0中,不需要做这些烦人的工作,它已经将这些Win32的API放到了Framework的类库中。在命名空间System.IO下有DriveInfo类,该类分别包括属性:TotalSize,TotalFresSpace,AvailableFreeSpace,DriveFormat,DriveType,VolumeLabel等属性。现在要获得有关磁盘的信息,就非常容易了。

using  System.IO;

string  driveName  =   " C:\\ " ;
DriveInfo driveInfo 
=   new  DriveInfo(driveName);

Console.WriteLine(
" The volume name is {0} " ,driveInfo.VolumeLabel);
Console.WriteLine(
" The total space is {0} " ,driveInfo.TotalSize);
Console.WriteLine(
" The free space is {0} " ,driveInfo.TotalFreeSpace);

另外,DriveInfo类还有一个静态方法GetDrives(),它能获得当前计算机所有驱动器的信息:

DriveInfo[] drives  =  DriveInfo.GetDrives();

不知道.Net2.0又封装了多少.Net 1.1版本未曾实现的Win32 API呢?这还需要我们慢慢的去发掘啊。

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