如何在C＃中重新加載USB磁盤？

1

我已經解決了這樣這個問題設備的工作，流程是我的代碼：

win32.cs

using System;

使用System.Collections.Generic; using System.Text; using System.Runtime.InteropServices;

命名空間SystemDevices { [StructLayout（LayoutKind.Sequential）] 公共結構SP_BROADCAST_HANDLE { 公衆詮釋dbch_size; public int dbch_devicetype; public int dbch_reserved; public IntPtr dbch_handle; public IntPtr dbch_hdevnotify; public Guid dbch_eventguid; public long dbch_nameoffset; public byte dbch_data; public byte dbch_data1; }

[StructLayout(LayoutKind.Sequential)] 
public class DEV_BROADCAST_DEVICEINTERFACE 
{ 
    public int dbcc_size; 
    public int dbcc_devicetype; 
    public int dbcc_reserved; 
} 

[StructLayout(LayoutKind.Sequential)] 
public class SP_DEVINFO_DATA 
{ 
    public int cbSize; 
    public Guid classGuid; 
    public int devInst; 
    public IntPtr reserved; 
}; 

[StructLayout(LayoutKind.Sequential)] 
public class SP_DEVINSTALL_PARAMS 
{ 
    public int cbSize; 
    public int Flags; 
    public int FlagsEx; 
    public IntPtr hwndParent; 
    public IntPtr InstallMsgHandler; 
    public IntPtr InstallMsgHandlerContext; 
    public IntPtr FileQueue; 
    public IntPtr ClassInstallReserved; 
    public int Reserved; 
    [MarshalAs(UnmanagedType.LPTStr)] 
    public string DriverPath; 
}; 

[StructLayout(LayoutKind.Sequential)] 
public class SP_PROPCHANGE_PARAMS 
{ 
    public SP_CLASSINSTALL_HEADER ClassInstallHeader = new SP_CLASSINSTALL_HEADER(); 
    public int StateChange; 
    public int Scope; 
    public int HwProfile; 
}; 

[StructLayout(LayoutKind.Sequential)] 
public class SP_CLASSINSTALL_HEADER 
{ 
    public int cbSize; 
    public int InstallFunction; 
}; 

public class Win32 
{ 
    [DllImport("user32.dll", CharSet = CharSet.Auto)] 
    public static extern IntPtr RegisterDeviceNotification(IntPtr hRecipient, DEV_BROADCAST_DEVICEINTERFACE NotificationFilter, UInt32 Flags); 

    [DllImport("user32.dll", CharSet = CharSet.Auto)] 
    public static extern UInt32 UnregisterDeviceNotification(IntPtr hHandle); 

    [DllImport("setupapi.dll", SetLastError = true)] 
    public static extern IntPtr SetupDiGetClassDevs(ref Guid ClassGuid, 
     [MarshalAs(UnmanagedType.LPStr)]String Enumerator, IntPtr hwndParent, Int32 Flags); 

    [DllImport("setupapi.dll")] 
    public static extern IntPtr SetupDiGetClassDevsEx(ref Guid ClassGuid, 
     [MarshalAs(UnmanagedType.LPStr)]String Enumerator, 
     IntPtr hwndParent, Int32 Flags, IntPtr DeviceInfoSet, 
     [MarshalAs(UnmanagedType.LPStr)]String MachineName, 
     IntPtr Reserved); 

    [DllImport("setupapi.dll", SetLastError = true)] 
    public static extern Int32 SetupDiDestroyDeviceInfoList(IntPtr lpInfoSet); 

    [DllImport("setupapi.dll", SetLastError = true)] 
    public static extern Boolean SetupDiEnumDeviceInfo(IntPtr lpInfoSet, Int32 dwIndex, SP_DEVINFO_DATA devInfoData); 

    [DllImport("setupapi.dll", SetLastError = true)] 
    public static extern Boolean SetupDiGetDeviceRegistryProperty(IntPtr lpInfoSet, SP_DEVINFO_DATA DeviceInfoData, UInt32 Property, 
     UInt32 PropertyRegDataType, StringBuilder PropertyBuffer, UInt32 PropertyBufferSize, IntPtr RequiredSize); 

    [DllImport("setupapi.dll", SetLastError = true, CharSet = CharSet.Auto)] 
    public static extern Boolean SetupDiSetClassInstallParams(IntPtr DeviceInfoSet, SP_DEVINFO_DATA DeviceInfoData, SP_PROPCHANGE_PARAMS ClassInstallParams, int ClassInstallParamsSize); 

    [DllImport("setupapi.dll", CharSet = CharSet.Auto)] 
    public static extern Boolean SetupDiCallClassInstaller(UInt32 InstallFunction, IntPtr DeviceInfoSet, SP_DEVINFO_DATA DeviceInfoData); 

    [DllImport("setupapi.dll", CharSet = CharSet.Auto)] 
    public static extern Boolean SetupDiClassNameFromGuid(ref Guid ClassGuid, StringBuilder className, Int32 ClassNameSize, ref Int32 RequiredSize); 

    [DllImport("setupapi.dll", CharSet = CharSet.Auto)] 
    public static extern Boolean SetupDiGetClassDescription(ref Guid ClassGuid, StringBuilder classDescription, Int32 ClassDescriptionSize, ref Int32 RequiredSize); 

    [DllImport("setupapi.dll", CharSet = CharSet.Auto)] 
    public static extern Boolean SetupDiGetDeviceInstanceId(IntPtr DeviceInfoSet, SP_DEVINFO_DATA DeviceInfoData, StringBuilder DeviceInstanceId, Int32 DeviceInstanceIdSize, ref Int32 RequiredSize); 

    public const int DIGCF_ALLCLASSES = (0x00000004); 
    public const int DIGCF_PRESENT = (0x00000002); 
    public const int INVALID_HANDLE_VALUE = -1; 
    public const int SPDRP_DEVICEDESC = (0x00000000); 
    public const int MAX_DEV_LEN = 200; 
    public const int DEVICE_NOTIFY_WINDOW_HANDLE = (0x00000000); 
    public const int DEVICE_NOTIFY_SERVICE_HANDLE = (0x00000001); 
    public const int DEVICE_NOTIFY_ALL_INTERFACE_CLASSES = (0x00000004); 
    public const int DBT_DEVTYP_DEVICEINTERFACE = (0x00000005); 
    public const int DBT_DEVNODES_CHANGED = (0x0007); 
    public const int WM_DEVICECHANGE = (0x0219); 
    public const int DIF_PROPERTYCHANGE = (0x00000012); 
    public const int DICS_FLAG_GLOBAL = (0x00000001); 
    public const int DICS_FLAG_CONFIGSPECIFIC = (0x00000002); 
    public const int DICS_ENABLE = (0x00000001); 
    public const int DICS_DISABLE = (0x00000002); 

    public static bool StateChange(bool Enable, int SelectedItem, IntPtr DevInfo) 
    { 
     bool result = false; 
     SP_DEVINFO_DATA devInfoData = new SP_DEVINFO_DATA(); ; 
     devInfoData.cbSize = Marshal.SizeOf(typeof(SP_DEVINFO_DATA)); 
     if (true == SetupDiEnumDeviceInfo(DevInfo, SelectedItem, devInfoData)) 
     { 
      SP_PROPCHANGE_PARAMS pcp = new SP_PROPCHANGE_PARAMS(); ; 
      pcp.ClassInstallHeader.cbSize = Marshal.SizeOf(typeof(SP_CLASSINSTALL_HEADER)); 
      pcp.ClassInstallHeader.InstallFunction = DIF_PROPERTYCHANGE; 
      pcp.Scope = DICS_FLAG_GLOBAL; 
      pcp.StateChange = (Enable ? DICS_ENABLE : DICS_DISABLE); 
      if (true == SetupDiSetClassInstallParams(DevInfo, devInfoData, pcp, Marshal.SizeOf(pcp))) 
      { 
       if (true == SetupDiCallClassInstaller(DIF_PROPERTYCHANGE, DevInfo, devInfoData)) 
       { 
        result = true; 
       } 
      } 
     } 
     return result; 
    } 

    public static String GetClassNameFromGuid(Guid guid) 
    { 
     String result = String.Empty; 
     StringBuilder className = new StringBuilder(); 
     Int32 iRequiredSize = 0; 
     Int32 iSize = 0; 
     bool b = SetupDiClassNameFromGuid(ref guid, className, iSize, ref iRequiredSize); 

     className = new StringBuilder(iRequiredSize); 
     iSize = iRequiredSize; 

     b = SetupDiClassNameFromGuid(ref guid, className, iSize, ref iRequiredSize); 
     if (true == b) 
     { 
      result = className.ToString(); 
     } 
     return result; 
    } 
    public static String GetClassDescriptionFromGuid(Guid guid) 
    { 
     String result = String.Empty; 
     StringBuilder classDesc = new StringBuilder(0); 
     Int32 iRequiredSize = 0; 
     Int32 iSize = 0; 
     bool b = SetupDiGetClassDescription(ref guid, classDesc, iSize, ref iRequiredSize); 

     classDesc = new StringBuilder(iRequiredSize); 
     iSize = iRequiredSize; 

     b = SetupDiGetClassDescription(ref guid, classDesc, iSize, ref iRequiredSize); 
     if (true == b) 
     { 
      result = classDesc.ToString(); 
     } 
     return result; 
    } 

    public static String GetDeviceInstanceId(IntPtr DeviceInfoSet, SP_DEVINFO_DATA DeviceInfoData) 
    { 
     String result = String.Empty; 
     StringBuilder id = new StringBuilder(0); 
     Int32 iRequiredSize = 0; 
     Int32 iSize = 0; 
     bool b = SetupDiGetDeviceInstanceId(DeviceInfoSet, DeviceInfoData, id, iSize, ref iRequiredSize); 

     id = new StringBuilder(iRequiredSize); 
     iSize = iRequiredSize; 

     b = SetupDiGetDeviceInstanceId(DeviceInfoSet, DeviceInfoData, id, iSize, ref iRequiredSize); 
     if (true == b) 
     { 
      result = id.ToString(); 
     } 
     return result; 
    } 
}

}

在win32.cs有一些功能來控制硬件。

函數StateChange（bool Enable，int SelectedItem，IntPtr DevInfo）用於控制硬件啓動或停止。有三個Parameters.when啓用是真實的，這個功能使得硬件衛生組織ID是的SelectedItem開始，如有虛假stop.i獲得此代碼ID：

Guid classGuid = Guid.Empty; 
     IntPtr hDevInfo = Win32.SetupDiGetClassDevs(ref classGuid, null, IntPtr.Zero, Win32.DIGCF_ALLCLASSES | Win32.DIGCF_PRESENT); 
     if (hDevInfo.ToInt32() == Win32.INVALID_HANDLE_VALUE) 
     { 
      Console.WriteLine("read hardware information error"); 
     } 
     else 
     { 
      int i = 0; 
      StringBuilder deviceName = new StringBuilder(); 
      deviceName.Capacity = Win32.MAX_DEV_LEN; 
      do 
      { 
       SP_DEVINFO_DATA devInfoData = new SP_DEVINFO_DATA(); 
       devInfoData.cbSize = Marshal.SizeOf(typeof(SP_DEVINFO_DATA)); 
       devInfoData.classGuid = Guid.Empty; 
       devInfoData.devInst = 0; 
       devInfoData.reserved = IntPtr.Zero; 
       bool result = Win32.SetupDiEnumDeviceInfo(hDevInfo, i, devInfoData); 
       if (false == result) 
       { 
        break; 
       } 
       Console.WriteLine("Device: {0}", i); 
       Console.WriteLine("\tGuid={0}", devInfoData.classGuid); 
       Console.WriteLine("\tName={0}", Win32.GetClassNameFromGuid(devInfoData.classGuid)); 
       Console.WriteLine("\tDescription={0}", Win32.GetClassDescriptionFromGuid(devInfoData.classGuid));}

來源

2010-12-09 03:25:18 hcemp

0

有一個可以從微軟獲得的工具（devcon），可以用來實現設備管理器的功能。

以下命令用於刪除一個特定的設備（假設你的設備名稱是金士頓）

> devcon remove *Kingston*

這將導致要禁用該設備。所以它不再可用。命令重新掃描啓用設備。

> devcon rescan

您可以通過Process.Start（）方法執行此命令。這並不與已標記爲「安全刪除」

來源

2010-12-06 06:34:13

2

using System; 
using System.Collections.Generic; 
using System.ComponentModel; 
using System.Data; 
using System.Drawing; 
using System.Linq; 
using System.Text; 
using System.Windows.Forms; 
using Microsoft.Win32; 

private void btnenable_Click(object sender, EventArgs e) 
{ 
const string keyName = "HKEY_LOCAL_MACHINE\\SYSTEM\\CurrentControlSet\\Services\\USBSTOR"; 

// int tLong = (int)Registry.GetValue(keyName, "Start",0); 
Registry.SetValue(keyName, "Start", "00000003"); 
MessageBox.Show("USB MassStorage Enabled"); 

} 

private void btndisable_Click(object sender, EventArgs e) 
{ 
const string keyName = "HKEY_LOCAL_MACHINE\\SYSTEM\\CurrentControlSet\\Services\\USBSTOR"; 

// int tLong = (int)Registry.GetValue(keyName, "Start",0); 
Registry.SetValue(keyName, "Start", "00000004"); 
MessageBox.Show("USB MassStorage Disabled"); 
}

來源

2010-12-06 07:00:56 Pratik

+0

但這usbdisk已標記爲「安全移除「 – hcemp 2010-12-08 01:01:44

如何在C＃中重新加載USB磁盤？

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