DriveInfo.TotalFreeSpace プロパティ

定義

名前空間:
System.IO
アセンブリ:
System.IO.FileSystem.DriveInfo.dll
アセンブリ:
mscorlib.dll
アセンブリ:
netstandard.dll

ドライブで使用できる空き領域の量の合計 (バイト単位) を取得します。Gets the total amount of free space available on a drive, in bytes.

public:
 property long TotalFreeSpace { long get(); };
public long TotalFreeSpace { get; }
member this.TotalFreeSpace : int64
Public ReadOnly Property TotalFreeSpace As Long

プロパティ値

Int64

ドライブで使用できる空き領域の合計 (バイト単位)。The total free space available on a drive, in bytes.

例外

UnauthorizedAccessException

ドライブ情報へのアクセスが拒否されました。Access to the drive information is denied.

DriveNotFoundException

ドライブがマップされていないか、または存在しません。The drive is not mapped or does not exist.

IOException

ディスク エラーまたはドライブの準備ができていないなどの I/O エラーが発生しました。An I/O error occurred (for example, a disk error or a drive was not ready).

例

次のコード例は、クラスを使用して、 DriveInfo 現在のシステム上のすべてのドライブに関する情報を表示する方法を示しています。The following code example demonstrates the use of the DriveInfo class to display information about all of the drives on the current system.

using System;
using System.IO;

class Test
{
    public static void Main()
    {
        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);
            }
        }
    }
}
/*
This code produces output similar to the following:

Drive A:\
  Drive type: Removable
Drive C:\
  Drive type: Fixed
  Volume label:
  File system: FAT32
  Available space to current user:     4770430976 bytes
  Total available space:               4770430976 bytes
  Total size of drive:                10731683840 bytes
Drive D:\
  Drive type: Fixed
  Volume label:
  File system: NTFS
  Available space to current user:    15114977280 bytes
  Total available space:              15114977280 bytes
  Total size of drive:                25958948864 bytes
Drive E:\
  Drive type: CDRom

The actual output of this code will vary based on machine and the permissions
granted to the user executing it.
*/

Imports System.IO

Class Test
    Public Shared Sub Main()
        Dim allDrives() As DriveInfo = DriveInfo.GetDrives()

        Dim d As DriveInfo
        For Each d In allDrives
            Console.WriteLine("Drive {0}", d.Name)
            Console.WriteLine("  Drive type: {0}", d.DriveType)
            If d.IsReady = True Then
                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)
            End If
        Next
    End Sub
End Class
'This code produces output similar to the following:
'
'Drive A:\
'  Drive type: Removable
'Drive C:\
'  Drive type: Fixed
'  Volume label: 
'  File system: FAT32
'  Available space to current user:     4770430976 bytes
'  Total available space:               4770430976 bytes
'  Total size of drive:                10731683840 bytes 
'Drive D:\
'  Drive type: Fixed
'  Volume label: 
'  File system: NTFS
'  Available space to current user:    15114977280 bytes
'  Total available space:              15114977280 bytes
'  Total size of drive:                25958948864 bytes 
'Drive E:\
'  Drive type: CDRom
'
'The actual output of this code will vary based on machine and the permissions
'granted to the user executing it.

注釈

このプロパティは、現在のユーザーが使用できるものだけでなく、ドライブで使用可能な空き領域の合計サイズを示します。This property indicates the total amount of free space available on the drive, not just what is available to the current user.

適用対象