C＃ - 从NetApi32.dll在Windows Server 2008和IIS7上的NetUseAdd

Question

我正在尝试使用NetUseAdd来添加应用程序所需的共享。我的代码看起来像这样。

[DllImport("NetApi32.dll", SetLastError = true, CharSet = CharSet.Unicode)] 
internal static extern uint NetUseAdd(
    string UncServerName, 
    uint Level, 
    IntPtr Buf, 
    out uint ParmError); 

...

USE_INFO_2 info = new USE_INFO_2(); 
info.ui2_local = null; 
info.ui2_asg_type = 0xFFFFFFFF; 
info.ui2_remote = remoteUNC; 
info.ui2_username = username; 
info.ui2_password = Marshal.StringToHGlobalAuto(password); 
info.ui2_domainname = domainName; 

IntPtr buf = Marshal.AllocHGlobal(Marshal.SizeOf(info)); 

try 
{ 
    Marshal.StructureToPtr(info, buf, true); 

    uint paramErrorIndex; 
    uint returnCode = NetUseAdd(null, 2, buf, out paramErrorIndex); 

    if (returnCode != 0) 
    { 
     throw new Win32Exception((int)returnCode); 
    } 
} 
finally 
{ 
    Marshal.FreeHGlobal(buf); 
} 

这正常上我们的服务器2003箱。但是在试图转移到Server 2008和IIS7时，这不再有效。通过自由采伐我发现它挂在线上Marshal.StructureToPtr(info, buf, true);

我绝对不知道为什么这是任何人都可以摆脱它的任何光告诉我在哪里可能会寻找更多的信息？

Answer 1

的原因是：

你拉的P/Invoke签名关闭pinvoke.net你没有验证它。最初编写这个p/invoke示例代码的傻瓜不知道他在做什么，并创建了一个在32位系统上“工作”但在64位系统上不起作用的工具。他以某种方式将一个非常简单的p/invoke签名变成了一些非常复杂的混乱，并在网络上像野火般蔓延。

正确的签名是：

[DllImport("NetApi32.dll", SetLastError = true, CharSet = CharSet.Unicode)] 
    public static extern uint NetUseAdd(
     string UncServerName, 
     UInt32 Level, 
     ref USE_INFO_2 Buf, 
     out UInt32 ParmError 
     ); 

    [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Unicode)] 
    public struct USE_INFO_2 
    { 
     public string ui2_local; 
     public string ui2_remote; 
     public string ui2_password; 
     public UInt32 ui2_status; 
     public UInt32 ui2_asg_type; 
     public UInt32 ui2_refcount; 
     public UInt32 ui2_usecount; 
     public string ui2_username; 
     public string ui2_domainname; 
    } 

您的代码应阅读：

USE_INFO_2 info = new USE_INFO_2(); 
info.ui2_local = null; 
info.ui2_asg_type = 0xFFFFFFFF; 
info.ui2_remote = remoteUNC; 
info.ui2_username = username; 
info.ui2_password = password; 
info.ui2_domainname = domainName;  

uint paramErrorIndex; 
uint returnCode = NetUseAdd(null, 2, ref info, out paramErrorIndex); 

if (returnCode != 0) 
{ 
    throw new Win32Exception((int)returnCode); 
} 

希望这是一些帮助。我只是花了半天的时间来深入远程调试某人，而不是使用垃圾代码来试图弄清楚发生了什么事情，就是这样。

Answer 2

你对你的结构有什么样的布局？我相信USE_INFO_2需要[StructLayout（LayoutKind.Sequential，CharSet = CharSet.Unicode）]。

此外，你有没有尝试只是通过参考传递结构，而不是需要Marshal.StructureToPtr？

Answer 3

干得好！我在Windows资源管理器中没有看到任何东西。几天后，ShellNotification进入了我的脑海。这我以前用于文件图标关联。正如我记得的那样，NetShare也有一个触发器。是的，对！

如果有NetShareAdd，您必须从shell32.dll执行SHChangeNotify。

ShellNotification.NotifyCreateDrive(info.ui2_local); 

这是我用它的类：

public class ShellNotification 
{  
    [DllImport("shell32.dll")] 
    private static extern void SHChangeNotify(
     UInt32 wEventId, 
     UInt32 uFlags, 
     IntPtr dwItem1, 
     IntPtr dwItem2); 

    // Notify shell of change of file associations. 
    public static void NotifyOfChange() 
    { 
     SHChangeNotify(
      (uint)ShellChangeNotificationEvents.SHCNE_ASSOCCHANGED, 
      (uint)(ShellChangeNotificationFlags.SHCNF_IDLIST | ShellChangeNotificationFlags.SHCNF_FLUSHNOWAIT), 
      IntPtr.Zero, 
      IntPtr.Zero); 
    } 

    internal static void NotifyCreateDrive(string path) //path = "M:" 
    { 
     IntPtr strPtr = Marshal.StringToHGlobalUni(path); 

     //A folder on the local computer is being shared via the network. SHCNF_IDLIST or SHCNF_PATHW must be specified in uFlags. dwItem1 contains the folder that is being shared. dwItem2 is not used and should be NULL. 
     SHChangeNotify(
      (uint)ShellChangeNotificationEvents.SHCNE_NETSHARE, 
      (uint)(ShellChangeNotificationFlags.SHCNF_IDLIST | ShellChangeNotificationFlags.SHCNF_PATHW), 
      strPtr, 
      IntPtr.Zero); 

     //also, you need to make sure to free the unmanaged memory: 
     Marshal.FreeHGlobal(strPtr); 
    } 

    [Flags] 
    private enum ShellChangeNotificationEvents : uint 
    { 
     //The name of a nonfolder item has changed. SHCNF_IDLIST or SHCNF_PATH must be specified in uFlags. dwItem1 contains the previous PIDL or name of the item. dwItem2 contains the new PIDL or name of the item. 
     SHCNE_RENAMEITEM = 0x00000001, 
     //A nonfolder item has been created. SHCNF_IDLIST or SHCNF_PATH must be specified in uFlags. dwItem1 contains the item that was created. dwItem2 is not used and should be NULL. 
     SHCNE_CREATE = 0x00000002, 
     //A nonfolder item has been deleted. SHCNF_IDLIST or SHCNF_PATH must be specified in uFlags. dwItem1 contains the item that was deleted. dwItem2 is not used and should be NULL. 
     SHCNE_DELETE = 0x00000004, 
     //A folder has been created. SHCNF_IDLIST or SHCNF_PATH must be specified in uFlags. dwItem1 contains the folder that was created. dwItem2 is not used and should be NULL. 
     SHCNE_MKDIR = 0x00000008, 
     //A folder has been removed. SHCNF_IDLIST or SHCNF_PATH must be specified in uFlags. dwItem1 contains the folder that was removed. dwItem2 is not used and should be NULL. 
     SHCNE_RMDIR = 0x00000010, 
     //Storage media has been inserted into a drive. SHCNF_IDLIST or SHCNF_PATH must be specified in uFlags. dwItem1 contains the root of the drive that contains the new media. dwItem2 is not used and should be NULL. 
     SHCNE_MEDIAINSERTED = 0x00000020, 
     //Storage media has been removed from a drive. SHCNF_IDLIST or SHCNF_PATH must be specified in uFlags. dwItem1 contains the root of the drive from which the media was removed. dwItem2 is not used and should be NULL. 
     SHCNE_MEDIAREMOVED = 0x00000040, 
     //A drive has been removed. SHCNF_IDLIST or SHCNF_PATH must be specified in uFlags. dwItem1 contains the root of the drive that was removed. dwItem2 is not used and should be NULL. 
     SHCNE_DRIVEREMOVED = 0x00000080, 
     //A drive has been added. SHCNF_IDLIST or SHCNF_PATH must be specified in uFlags. dwItem1 contains the root of the drive that was added. dwItem2 is not used and should be NULL. 
     SHCNE_DRIVEADD = 0x00000100, 
     //A folder on the local computer is being shared via the network. SHCNF_IDLIST or SHCNF_PATH must be specified in uFlags. dwItem1 contains the folder that is being shared. dwItem2 is not used and should be NULL. 
     SHCNE_NETSHARE = 0x00000200, 
     //A folder on the local computer is no longer being shared via the network. SHCNF_IDLIST or SHCNF_PATH must be specified in uFlags. dwItem1 contains the folder that is no longer being shared. dwItem2 is not used and should be NULL. 
     SHCNE_NETUNSHARE = 0x00000400, 
     //The attributes of an item or folder have changed. SHCNF_IDLIST or SHCNF_PATH must be specified in uFlags. dwItem1 contains the item or folder that has changed. dwItem2 is not used and should be NULL. 
     SHCNE_ATTRIBUTES = 0x00000800, 
     //The contents of an existing folder have changed, but the folder still exists and has not been renamed. SHCNF_IDLIST or SHCNF_PATH must be specified in uFlags. dwItem1 contains the folder that has changed. dwItem2 is not used and should be NULL. If a folder has been created, deleted, or renamed, use SHCNE_MKDIR, SHCNE_RMDIR, or SHCNE_RENAMEFOLDER, respectively, instead. 
     SHCNE_UPDATEDIR = 0x00001000, 
     //An existing nonfolder item has changed, but the item still exists and has not been renamed. SHCNF_IDLIST or SHCNF_PATH must be specified in uFlags. dwItem1 contains the item that has changed. dwItem2 is not used and should be NULL. If a nonfolder item has been created, deleted, or renamed, use SHCNE_CREATE, SHCNE_DELETE, or SHCNE_RENAMEITEM, respectively, instead. 
     SHCNE_UPDATEITEM = 0x00002000, 
     //The computer has disconnected from a server. SHCNF_IDLIST or SHCNF_PATH must be specified in uFlags. dwItem1 contains the server from which the computer was disconnected. dwItem2 is not used and should be NULL. 
     SHCNE_SERVERDISCONNECT = 0x00004000, 
     //An image in the system image list has changed. SHCNF_DWORD must be specified in uFlags. dwItem1 contains the index in the system image list that has changed. dwItem2 is not used and should be NULL. 
     SHCNE_UPDATEIMAGE = 0x00008000, 
     //A drive has been added and the Shell should create a new window for the drive. SHCNF_IDLIST or SHCNF_PATH must be specified in uFlags. dwItem1 contains the root of the drive that was added. dwItem2 is not used and should be NULL. 
     SHCNE_DRIVEADDGUI = 0x00010000, 
     //The name of a folder has changed. SHCNF_IDLIST or SHCNF_PATH must be specified in uFlags. dwItem1 contains the previous pointer to an item identifier list (PIDL) or name of the folder. dwItem2 contains the new PIDL or name of the folder. 
     SHCNE_RENAMEFOLDER = 0x00020000, 
     //The amount of free space on a drive has changed. SHCNF_IDLIST or SHCNF_PATH must be specified in uFlags. dwItem1 contains the root of the drive on which the free space changed. dwItem2 is not used and should be NULL. 
     SHCNE_FREESPACE = 0x00040000, 
     //Not currently used. 
     SHCNE_EXTENDED_EVENT = 0x04000000, 
     //A file type association has changed. SHCNF_IDLIST must be specified in the uFlags parameter. dwItem1 and dwItem2 are not used and must be NULL. 
     SHCNE_ASSOCCHANGED = 0x08000000, 
     //Specifies a combination of all of the disk event identifiers. 
     SHCNE_DISKEVENTS = 0x0002381F, 
     //Specifies a combination of all of the global event identifiers. 
     SHCNE_GLOBALEVENTS = 0x0C0581E0, 
     //All events have occurred. 
     SHCNE_ALLEVENTS = 0x7FFFFFFF, 
     //The specified event occurred as a result of a system interrupt. As this value modifies other event values, it cannot be used alone. 
     SHCNE_INTERRUPT = 0x80000000 
    } 

    private enum ShellChangeNotificationFlags 
    { 
     //dwItem1 and dwItem2 are the addresses of ITEMIDLIST structures that represent the item(s) affected by the change. Each ITEMIDLIST must be relative to the desktop folder. 
     SHCNF_IDLIST = 0x0000, 
     //dwItem1 and dwItem2 are the addresses of null-terminated strings of maximum length MAX_PATH that contain the full path names of the items affected by the change. 
     SHCNF_PATHA = 0x0001, 
     //dwItem1 and dwItem2 are the addresses of null-terminated strings that represent the friendly names of the printer(s) affected by the change. 
     SHCNF_PRINTERA = 0x0002, 
     //The dwItem1 and dwItem2 parameters are DWORD values. 
     SHCNF_DWORD = 0x0003, 
     //like SHCNF_PATHA but unicode string 
     SHCNF_PATHW = 0x0005, 
     //like SHCNF_PRINTERA but unicode string 
     SHCNF_PRINTERW = 0x0006, 
     //? 
     SHCNF_TYPE = 0x00FF, 
     //The function should not return until the notification has been delivered to all affected components. As this flag modifies other data-type flags, it cannot by used by itself. 
     SHCNF_FLUSH = 0x1000, 
     //The function should begin delivering notifications to all affected components but should return as soon as the notification process has begun. As this flag modifies other data-type flags, it cannot by used by itself. 
    } 
} 

我希望有别人递给受欢迎。