获取可用磁盘空间

93

鉴于以下每个输入，我想在该位置上获得可用空间。就像是

long GetFreeSpace(string path)

输入：

c:

c:\

c:\temp

\\server

\\server\C\storage
c#  diskspace 
— h
source
— dtb
52
不是重复的，stackoverflow.com / questions / 412632只询问磁盘，也询问UNC路径，412632中的解决方案不适用于它们。
— 2009年

Answers:

67

这对我有用...

using System.IO;

private long GetTotalFreeSpace(string driveName)
{
    foreach (DriveInfo drive in DriveInfo.GetDrives())
    {
        if (drive.IsReady && drive.Name == driveName)
        {
            return drive.TotalFreeSpace;
        }
    }
    return -1;
}

祝好运！

— 埃雷兹丹
source
7
drive.TotalFreeSpace不为我工作，但drive.AvailableFreeSpace不
— knocte
16
我知道这个答案很古老，但是您通常需要使用AvailableFreeSpace@knocte所说的。AvailableFreeSpace列出用户实际可用的数量（由于报价）。TotalFreeSpace列出磁盘上可用的内容，而与用户可以使用的内容无关。
— 罗伊T.
我赞成@RoyT的评论，因为他花时间解释了为什么推荐一个而不推荐另一个。
— SoCalCoder
40

DriveInfo将为您提供一些帮助（但不适用于UNC路径），但实际上我认为您需要使用GetDiskFreeSpaceEx。您可能可以使用WMI实现某些功能。GetDiskFreeSpaceEx看起来是您最好的选择。

您可能必须清理路径才能使其正常工作。

— 理查德
source
40

GetDiskFreeSpaceExRichardOD的from链接使用的工作代码段。

// Pinvoke for API function
[DllImport("kernel32.dll", SetLastError = true, CharSet = CharSet.Auto)]
[return: MarshalAs(UnmanagedType.Bool)]
public static extern bool GetDiskFreeSpaceEx(string lpDirectoryName,
out ulong lpFreeBytesAvailable,
out ulong lpTotalNumberOfBytes,
out ulong lpTotalNumberOfFreeBytes);

public static bool DriveFreeBytes(string folderName, out ulong freespace)
{
    freespace = 0;
    if (string.IsNullOrEmpty(folderName))
    {
        throw new ArgumentNullException("folderName");
    }

    if (!folderName.EndsWith("\\"))
    {
        folderName += '\\';
    }

    ulong free = 0, dummy1 = 0, dummy2 = 0;

    if (GetDiskFreeSpaceEx(folderName, out free, out dummy1, out dummy2))
    {
        freespace = free;
        return true;
    }
    else
    {
        return false;
    }
}
— sasha_gud
source
1
我希望它返回void，例如... if (!GetDiskFreeSpaceEx(folderName, out free, out total, out dummy)) throw new Win32Exception(Marshal.GetLastWin32Error());。无论如何，在这里找到代码非常方便。
— Eugene Ryabtsev
2
仅检查一下，但我认为“ CameraStorageFileHelper”是从原始代码复制粘贴的代码中的伪像吗？
— Andrew Theken 2013年
它不必以结尾"\\"。它可以是任何现有的dir路径，甚至可以是C:。这是我的这段代码版本：stackoverflow.com/a/58005966/964478
— Alex P.
7 
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.
*/
— 瓦鲁纳·曼朱拉（Waruna Manjula）
source
1
尽管此代码实际上适用于系统上的所有驱动器，但不能满足OP对安装点和连接点以及共享的要求……
— Adrian Hum
3

未经测试：

using System;
using System.Management;

ManagementObject disk = new
ManagementObject("win32_logicaldisk.deviceid="c:"");
disk.Get();
Console.WriteLine("Logical Disk Size = " + disk["Size"] + " bytes");
Console.WriteLine("Logical Disk FreeSpace = " + disk["FreeSpace"] + "
bytes");

顺便说一句，c：\ temp上的可用磁盘空间的结果是什么？您将获得没有c：\的空间

— 录像机
source
5
正如肯尼所说，任何给定目录的可用空间不一定与根目录驱动器的可用空间相同。当然不在我的机器上。
— 巴里·凯利
3

这是@sasha_gud答案的重构和简化版本：

    [DllImport("kernel32.dll", SetLastError = true, CharSet = CharSet.Unicode)]
    [return: MarshalAs(UnmanagedType.Bool)]
    public static extern bool GetDiskFreeSpaceEx(string lpDirectoryName,
        out ulong lpFreeBytesAvailable,
        out ulong lpTotalNumberOfBytes,
        out ulong lpTotalNumberOfFreeBytes);

    public static ulong GetDiskFreeSpace(string path)
    {
        if (string.IsNullOrEmpty(path))
        {
            throw new ArgumentNullException("path");
        }

        ulong dummy = 0;

        if (!GetDiskFreeSpaceEx(path, out ulong freeSpace, out dummy, out dummy))
        {
            throw new Win32Exception(Marshal.GetLastWin32Error());
        }

        return freeSpace;
    }
— 亚历克斯·P。
source
考虑到您提取LastWin32Error，您的方法会更好
— Eddy Shterenberg
3

检查一下（这对我来说是一个可行的解决方案）

public long AvailableFreeSpace()
{
    long longAvailableFreeSpace = 0;
    try{
        DriveInfo[] arrayOfDrives = DriveInfo.GetDrives();
        foreach (var d in arrayOfDrives)
        {
            Console.WriteLine("Drive {0}", d.Name);
            Console.WriteLine("  Drive type: {0}", d.DriveType);
            if (d.IsReady == true && d.Name == "/data")
            {
                Console.WriteLine("Volume label: {0}", d.VolumeLabel);
                Console.WriteLine("File system: {0}", d.DriveFormat);
                Console.WriteLine("AvailableFreeSpace for current user:{0, 15} bytes",d.AvailableFreeSpace);
                Console.WriteLine("TotalFreeSpace {0, 15} bytes",d.TotalFreeSpace);
                Console.WriteLine("Total size of drive: {0, 15} bytes \n",d.TotalSize);
                }
                longAvailableFreeSpaceInMB = d.TotalFreeSpace;
        }
    }
    catch(Exception ex){
        ServiceLocator.GetInsightsProvider()?.LogError(ex);
    }
    return longAvailableFreeSpace;
}
— 萨钦·尼库姆（Sachin Nikumbh）
source
2

看到这篇文章！

  1. 通过搜索索引“：”来标识UNC par或本地驱动器路径

  2. 如果它是UNC PATH，则可以映射UNC路径

  3. 执行驱动器名称的代码被映射为驱动器名称<UNC映射驱动器或本地驱动器>。

    using System.IO;

private long GetTotalFreeSpace(string driveName)
{
foreach (DriveInfo drive in DriveInfo.GetDrives())
{
    if (drive.IsReady && drive.Name == driveName)
    {
        return drive.TotalFreeSpace;
    }
}
return -1;
}

  4. 完成要求后取消映射。

— 西瓦
source
1
尽管此代码实际上适用于系统上的所有驱动器，但不能满足OP对安装点和连接点的要求...
— Adrian Hum
2

我正在寻找以GB为单位的大小，因此我通过以下更改改进了上面超人的代码：

public double GetTotalHDDSize(string driveName)
{
    foreach (DriveInfo drive in DriveInfo.GetDrives())
    {
        if (drive.IsReady && drive.Name == driveName)
        {
            return drive.TotalSize / (1024 * 1024 * 1024);
        }
    }
    return -1;
}
— NightlyHakr
source
8
您将返回驱动器的总容量。
— Nick Binnet
3
我以为任何人都可以计算出具有字节数的GB，但是您发现那是错误的假设。由于部门使用Tis代码是错误的，long但是函数返回了double。
— Qwertiy
2

就像这个答案和@RichardOD建议的那样，您应该这样做：

[DllImport("kernel32.dll", SetLastError=true, CharSet=CharSet.Auto)]
[return: MarshalAs(UnmanagedType.Bool)]
static extern bool GetDiskFreeSpaceEx(string lpDirectoryName,
   out ulong lpFreeBytesAvailable,
   out ulong lpTotalNumberOfBytes,
   out ulong lpTotalNumberOfFreeBytes);

ulong FreeBytesAvailable;
ulong TotalNumberOfBytes;
ulong TotalNumberOfFreeBytes;

bool success = GetDiskFreeSpaceEx(@"\\mycomputer\myfolder",
                                  out FreeBytesAvailable,
                                  out TotalNumberOfBytes,
                                  out TotalNumberOfFreeBytes);
if(!success)
    throw new System.ComponentModel.Win32Exception();

Console.WriteLine("Free Bytes Available:      {0,15:D}", FreeBytesAvailable);
Console.WriteLine("Total Number Of Bytes:     {0,15:D}", TotalNumberOfBytes);
Console.WriteLine("Total Number Of FreeBytes: {0,15:D}", TotalNumberOfFreeBytes);
— 亚历克斯·乔利格
source
1

我想为我的项目使用类似的方法，但在我的情况下，输入路径来自本地磁盘卷或群集存储卷（CSV）。因此DriveInfo类对我不起作用。CSV在另一个驱动器下通常具有C：\ ClusterStorage \ Volume *。请注意，C：与C：\ ClusterStorage \ Volume1的卷不同

这是我最终想出的：

    public static ulong GetFreeSpaceOfPathInBytes(string path)
    {
        if ((new Uri(path)).IsUnc)
        {
            throw new NotImplementedException("Cannot find free space for UNC path " + path);
        }

        ulong freeSpace = 0;
        int prevVolumeNameLength = 0;

        foreach (ManagementObject volume in
                new ManagementObjectSearcher("Select * from Win32_Volume").Get())
        {
            if (UInt32.Parse(volume["DriveType"].ToString()) > 1 &&                             // Is Volume monuted on host
                volume["Name"] != null &&                                                       // Volume has a root directory
                path.StartsWith(volume["Name"].ToString(), StringComparison.OrdinalIgnoreCase)  // Required Path is under Volume's root directory 
                )
            {
                // If multiple volumes have their root directory matching the required path,
                // one with most nested (longest) Volume Name is given preference.
                // Case: CSV volumes monuted under other drive volumes.

                int currVolumeNameLength = volume["Name"].ToString().Length;

                if ((prevVolumeNameLength == 0 || currVolumeNameLength > prevVolumeNameLength) &&
                    volume["FreeSpace"] != null
                    )
                {
                    freeSpace = ulong.Parse(volume["FreeSpace"].ToString());
                    prevVolumeNameLength = volume["Name"].ToString().Length;
                }
            }
        }

        if (prevVolumeNameLength > 0)
        {
            return freeSpace;
        }

        throw new Exception("Could not find Volume Information for path " + path);
    }
— 瓦伦
source
1

您可以尝试以下方法：

var driveName = "C:\\";
var freeSpace = DriveInfo.GetDrives().Where(x => x.Name == driveName && x.IsReady).FirstOrDefault().TotalFreeSpace;

祝好运

— 塞皮德一世
source
2
尽管此代码可以回答问题，但提供有关此代码为何和/或如何回答问题的其他上下文，可以提高其长期价值。
— xiawi
var driveName =“ C：\\”;
— Nime Cloud
-1

我遇到了同样的问题，我看到waruna manjula给出了最佳答案。但是，将其全部记录在控制台上并不是您想要的。要获取所有信息，请使用以下命令

第一步：在开始时声明值

    //drive 1
    public static string drivename = "";
    public static string drivetype = "";
    public static string drivevolumelabel = "";
    public static string drivefilesystem = "";
    public static string driveuseravailablespace = "";
    public static string driveavailablespace = "";
    public static string drivetotalspace = "";

    //drive 2
    public static string drivename2 = "";
    public static string drivetype2 = "";
    public static string drivevolumelabel2 = "";
    public static string drivefilesystem2 = "";
    public static string driveuseravailablespace2 = "";
    public static string driveavailablespace2 = "";
    public static string drivetotalspace2 = "";

    //drive 3
    public static string drivename3 = "";
    public static string drivetype3 = "";
    public static string drivevolumelabel3 = "";
    public static string drivefilesystem3 = "";
    public static string driveuseravailablespace3 = "";
    public static string driveavailablespace3 = "";
    public static string drivetotalspace3 = "";

步骤2：实际程式码

                DriveInfo[] allDrives = DriveInfo.GetDrives();
                int drive = 1;
                foreach (DriveInfo d in allDrives)
                {
                    if (drive == 1)
                    {
                        drivename = String.Format("Drive {0}", d.Name);
                        drivetype = String.Format("Drive type: {0}", d.DriveType);
                        if (d.IsReady == true)
                        {
                            drivevolumelabel = String.Format("Volume label: {0}", d.VolumeLabel);
                            drivefilesystem = String.Format("File system: {0}", d.DriveFormat);
                            driveuseravailablespace = String.Format("Available space to current user:{0, 15} bytes", d.AvailableFreeSpace);
                            driveavailablespace = String.Format("Total available space:{0, 15} bytes", d.TotalFreeSpace);
                            drivetotalspace = String.Format("Total size of drive:{0, 15} bytes ", d.TotalSize);
                        }
                        drive = 2;
                    }
                    else if (drive == 2)
                    {
                        drivename2 = String.Format("Drive {0}", d.Name);
                        drivetype2 = String.Format("Drive type: {0}", d.DriveType);
                        if (d.IsReady == true)
                        {
                            drivevolumelabel2 = String.Format("Volume label: {0}", d.VolumeLabel);
                            drivefilesystem2 = String.Format("File system: {0}", d.DriveFormat);
                            driveuseravailablespace2 = String.Format("Available space to current user:{0, 15} bytes", d.AvailableFreeSpace);
                            driveavailablespace2 = String.Format("Total available space:{0, 15} bytes", d.TotalFreeSpace);
                            drivetotalspace2 = String.Format("Total size of drive:{0, 15} bytes ", d.TotalSize);
                        }
                        drive = 3;
                    }
                    else if (drive == 3)
                    {
                        drivename3 = String.Format("Drive {0}", d.Name);
                        drivetype3 = String.Format("Drive type: {0}", d.DriveType);
                        if (d.IsReady == true)
                        {
                            drivevolumelabel3 = String.Format("Volume label: {0}", d.VolumeLabel);
                            drivefilesystem3 = String.Format("File system: {0}", d.DriveFormat);
                            driveuseravailablespace3 = String.Format("Available space to current user:{0, 15} bytes", d.AvailableFreeSpace);
                            driveavailablespace3 = String.Format("Total available space:{0, 15} bytes", d.TotalFreeSpace);
                            drivetotalspace3 = String.Format("Total size of drive:{0, 15} bytes ", d.TotalSize);
                        }
                        drive = 4;
                    }
                    if (drive == 4)
                    {
                        drive = 1;
                    }
                }

                //part 2: possible debug - displays in output

                //drive 1
                Console.WriteLine(drivename);
                Console.WriteLine(drivetype);
                Console.WriteLine(drivevolumelabel);
                Console.WriteLine(drivefilesystem);
                Console.WriteLine(driveuseravailablespace);
                Console.WriteLine(driveavailablespace);
                Console.WriteLine(drivetotalspace);

                //drive 2
                Console.WriteLine(drivename2);
                Console.WriteLine(drivetype2);
                Console.WriteLine(drivevolumelabel2);
                Console.WriteLine(drivefilesystem2);
                Console.WriteLine(driveuseravailablespace2);
                Console.WriteLine(driveavailablespace2);
                Console.WriteLine(drivetotalspace2);

                //drive 3
                Console.WriteLine(drivename3);
                Console.WriteLine(drivetype3);
                Console.WriteLine(drivevolumelabel3);
                Console.WriteLine(drivefilesystem3);
                Console.WriteLine(driveuseravailablespace3);
                Console.WriteLine(driveavailablespace3);
                Console.WriteLine(drivetotalspace3);

我想指出的是，您可以只使所有控制台writelines注释代码，但我认为对您进行测试将是一件很不错的事情。如果将所有这些显示出来，您将得到与waruna majuna相同的列表

驱动器C：\驱动器类型：固定卷标签：文件系统：NTFS当前用户可用空间：134880153600字节总可用空间：134880153600字节驱动器总大小：499554185216字节

驱动器D：\驱动器类型：CDRom

驱动器H：\驱动器类型：固定卷标签：HDD文件系统：NTFS当前用户的可用空间：2000010817536字节总可用空间：2000010817536字节驱动器总大小：2000263573504字节

但是，您现在可以访问字符串中的所有宽松信息

— 约翰·杜
source
7
不为3个类似对象创建类，而使用else。我哭了一点。
— Mathijs Segers
1
对不起，锅炉电镀代码，未使用集合且未使用开关？
— 阿德里安·嗡
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