在.NET中查找总磁盘空间和可用磁盘空间

怎么样 this link from MSDN 它使用 System.IO.DriveInfo 班级?

你可以使用 GetDiskFreeSpaceEx from kernel32.dll 它与UNC路径和驱动器一起工作。您需要做的只是包含一个dllimport(请参见链接以获取示例)。

这个 可以 不是你想要的,但我正在努力帮助你,它的好处是可以稍微安全地删除你的硬盘空间。

public static string DriveSizeAvailable(string path)
{
    long count = 0;
    byte toWrite = 1;
    try
    {
        using (StreamWriter writer = new StreamWriter(path))
        {
            while (true)
            {
                writer.Write(toWrite);
                count++;
            }
        }
    }
    catch (IOException)
    {                
    }

    return string.Format("There used to be {0} bytes available on drive {1}.", count, path);
}

public static string DriveSizeTotal(string path)
{
    DeleteAllFiles(path);
    int sizeAvailable = GetAvailableSize(path);
    return string.Format("Drive {0} will hold a total of {1} bytes.", path, sizeAvailable);
}

实际上不是一个C示例,但可能会给您一个提示-一个vb.net函数沿指定路径返回驱动器上的可用空间和总空间量(以字节为单位)。也适用于UNC路径,与system.io.driveinfo不同。

VB.NET:

<DllImport("kernel32.dll", SetLastError:=True, CharSet:=CharSet.Auto)> _
Private Shared Function GetDiskFreeSpaceEx(lpDirectoryName As String, ByRef lpFreeBytesAvailable As ULong, ByRef lpTotalNumberOfBytes As ULong, ByRef lpTotalNumberOfFreeBytes As ULong) As <MarshalAs(UnmanagedType.Bool)> Boolean
End Function

Public Shared Function GetDriveSpace(folderName As String, ByRef freespace As ULong, ByRef totalspace As ULong) As Boolean
    If Not String.IsNullOrEmpty(folderName) Then
        If Not folderName.EndsWith("\") Then
            folderName += "\"
        End If

        Dim free As ULong = 0, total As ULong = 0, dummy2 As ULong = 0
        If GetDiskFreeSpaceEx(folderName, free, total, dummy2) Then
            freespace = free
            totalspace = total
            Return True
        End If
    End If
End Function

system.io.driveinfo工作正常。我连接到两个单独的Netware服务器,并映射了几个驱动器。

这是本地C:驱动器:

Drive C:\
  File type: Fixed
  Volume label: Drive C
  File system: NTFS
  Available space to current user:   158558248960 bytes
  Total available space:             158558248960 bytes
  Total size of drive:               249884004352 bytes 

以下是其中一个网络驱动器的输出:

Drive F:\
  File type: Network
  Volume label: SYS
  File system: NWFS
  Available space to current user:     1840656384 bytes
  Total available space:               1840656384 bytes
  Total size of drive:                 4124475392 bytes 

我直接从DriveInfo上的msdn docs中使用了以下代码:

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("  File 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);
            }
        }
    }
}

还有一种可能,我已经用了很多年了。下面的示例是vbscript,但它应该与任何COM感知语言一起工作。注意 GetDrive() 也适用于UNC共享。

Dim Tripped
Dim Level

Tripped = False
Level   = 0

Sub Read(Entry, Source, SearchText, Minimum, Maximum)

    Dim fso
    Dim disk

    Set fso  = CreateObject("Scripting.FileSystemObject")

    Set disk = fso.GetDrive(Source)

    Level = (disk.AvailableSpace / (1024 * 1024 * 1024))

    If (CDbl(Level) < CDbl(Minimum)) or (CDbl(Level) > CDbl(Maximum)) Then
        Tripped = True
    Else
        Tripped = False
    End If

End Sub

Maksim-Sestic给出了最好的答案,因为它可以在本地和UNC路径上工作。为了更好地处理错误,我稍微修改了他的代码,并包括了一个示例。对我来说就像是一种魅力。

你需要放

Imports System.Runtime.InteropServices

在您的代码中,允许识别dllimport。

以下是修改后的代码:

<DllImport("kernel32.dll", SetLastError:=True, CharSet:=CharSet.Auto)> _
Private Shared Function GetDiskFreeSpaceEx(lpDirectoryName As String, ByRef lpFreeBytesAvailable As ULong, ByRef lpTotalNumberOfBytes As ULong, ByRef lpTotalNumberOfFreeBytes As ULong) As <MarshalAs(UnmanagedType.Bool)> Boolean
End Function

Public Shared Function GetDriveSpace(folderName As String, ByRef freespace As ULong, ByRef totalspace As ULong) As Boolean

Dim free As ULong = 0
Dim total As ULong = 0
Dim dummy2 As ULong = 0

Try

    If Not String.IsNullOrEmpty(folderName) Then

         If Not folderName.EndsWith("\") Then
             folderName += "\"
         End If

         If GetDiskFreeSpaceEx(folderName, free, total, dummy2) Then
             freespace = free
             totalspace = total
             Return True
         End If

     End If

Catch
End Try

    Return False

End Function

这样称呼:

dim totalspace as ulong = 0
dim freespace as ulong = 0
if GetDriveSpace("\\anycomputer\anyshare", freespace, totalspace) then
    'do what you need to do with freespace and totalspace
else
    'some error
end if

foldername也可以是本地目录,例如 drive:\path\path\...

它仍然在vb.net中,但将其转换为c应该不是问题。

我很肯定这是不可能的。在Windows资源管理器中,如果我尝试获取一个UNC目录的文件夹属性,它就不会给我提供尽可能多的可用空间。已用/可用空间是驱动器的一个特征,而不是文件夹,并且UNC共享仅被视为文件夹。

您必须:
-映射驱动器
-在远程机器上运行一些东西来检查磁盘空间。

您还可能会遇到分布式文件系统之类的问题,其中一个UNC/映射共享没有绑定到任何特定的驱动器,因此您必须在其中实际总结几个驱动器。

那么用户配额呢?驱动器可能未满,但您用于写入该文件夹的帐户可能已达到其限制。

不是C,只提供了可用空间,但是。…

dir \\server\share | find /i "bytes free"

让你成为其中一员。我正在寻找相同的解决方案,但似乎没有一个很好的解决方案-尤其是在试图避免映射驱动器时。