c# - 如何使用 C# 删除 USB 驱动器

Question

我正在尝试编写一个应用程序来删除 USB 驱动器，但我找不到这样做的方法。有一个 .NET 类可以做到这一点，还是可以使用 Win32 API？欢迎所有建议，感谢您的帮助。

Answer 1

这是您要查找的内容的链接：

使用 C# 弹出 USB 磁盘

解释如何做到这一点，并附带源代码，享受！

Answer 2

我已经测试了 2 个变体，WMI 和 Shell，Shell 变体按需要工作

贝壳

/// <summary>
/// Eject USB Drice
/// STA Thread is required
/// </summary>
/// <remarks>
/// Install Shell32
/// 1. Right click project
/// 2. Click Add reference
/// 3. Click .COM tab in Add reference dialogue
/// 4. Select Microsoft Shell Controls and Automation
/// 5. Click OK
/// </remarks>
/// <param name="driveName">eg. D:</param>
private static void EjectDrive(string driveName)
{
    var staThread = new Thread(new ParameterizedThreadStart(EjectDriveShell));
    staThread.SetApartmentState(ApartmentState.STA);
    staThread.Start(driveName);
    staThread.Join();
}

private static void EjectDriveShell(object param)
{
    var driveName = param.ToString();

    var shell = new Shell();
    shell.NameSpace(17).ParseName(driveName).InvokeVerb("Eject");
}

WMI

您可以使用此脚本，请参阅文档

private static void EjectDrice(string driveLetter)
{
    var scope = new ManagementScope(@"\\localhost\root\CIMV2", null);
    scope.Connect();
    var wql = $"SELECT * FROM Win32_Volume WHERE Name LIKE '{driveLetter}%'";
    var objectQuery = new ObjectQuery(wql);
    using var objectSearcher = new ManagementObjectSearcher(scope, objectQuery);
    foreach (ManagementObject classInstance in objectSearcher.Get())
    {
        using ManagementBaseObject inParams = classInstance.GetMethodParameters("Dismount");
        inParams["Force"] = false;
        inParams["Permanent"] = false;

        using ManagementBaseObject outParams = classInstance.InvokeMethod("Dismount", inParams, null);
    }
}