Question

我正在开发一个安装程序项目，我需要将文件提取到磁盘。如何使用c＃计算/查找硬盘上可用的磁盘空间？

Answer 1

使用System.IO.DriveInfo课程。有两个选项可供选择......一个考虑了磁盘配额的选项：

var drive = new DriveInfo("c");
long freeSpaceInBytes = drive.AvailableFreeSpace;

并且只提供总可用空间：

var drive = new DriveInfo("c");
long freeSpaceInBytes = drive.TotalFreeSpace;

Answer 2

http://msdn.microsoft.com/en-us/library/system.io.driveinfo.totalfreespace.aspx

从链接

复制

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);
            }
        }
    }
}

Answer 3

您也可以使用WMI。

http://msdn.microsoft.com/en-us/library/windows/desktop/aa394173(v=vs.85).aspx

using System;
using System.Management;

class Test
{
    static void Main()
    {
        var moCollection = new ManagementClass("Win32_LogicalDisk").GetInstances();

        foreach (var mo in moCollection)
        {
            if (mo["DeviceID"] != null && mo["DriveType"] != null && mo["Size"] != null && mo["FreeSpace"] != null)
            {
                // DriveType 3 = "Local Disk"
                if (Convert.ToInt32(mo["DriveType"]) == 3)
                {
                    Console.WriteLine("Drive {0}", mo["DeviceID"]);
                    Console.WriteLine("Size {0} bytes", mo["Size"]);
                    Console.WriteLine("Free {0} bytes", mo["FreeSpace"]);
                }
            }
        }
    }
}

Answer 4

你需要关心吗？只需将文件写入磁盘并根据需要处理错误 - 假设您必须实现回滚，以防万一发生与空间无关的事情，所以只需将“无磁盘空间”视为您需要的另一个错误回滚。

更新：如果您来这里正确回答这个问题，请发表评论。

如何计算可用磁盘空间？

4 个答案: