C#实现访问网络共享文件夹，使用 WNetAddConnection2A 和

WNetCancelConnection2A。

在目标服务器建立共享文件夹，建立访问账号test;

public enum ERROR_ID

{

ERROR_SUCCESS = 0, // Success

ERROR_BUSY = 170,

ERROR_MORE_DATA = 234,

ERROR_NO_BROWSER_SERVERS_FOUND = 6118,

ERROR_INVALID_LEVEL = 124,

ERROR_ACCESS_DENIED = 5,

ERROR_INVALID_PASSWORD = 86,

ERROR_INVALID_PARAMETER = 87,

ERROR_BAD_DEV_TYPE = 66,

ERROR_NOT_ENOUGH_MEMORY = 8,

ERROR_NETWORK_BUSY = 54,

ERROR_BAD_NETPATH = 53,

ERROR_NO_NETWORK = 1222,

ERROR_INVALID_HANDLE_STATE = 1609,

ERROR_EXTENDED_ERROR = 1208,

ERROR_DEVICE_ALREADY_REMEMBERED = 1202,

ERROR_NO_NET_OR_BAD_PATH = 1203

}

public enum RESOURCE_SCOPE

{

RESOURCE_CONNECTED = 1,

RESOURCE_GLOBALNET = 2,

RESOURCE_REMEMBERED = 3,

RESOURCE_RECENT = 4,

RESOURCE_CONTEXT = 5

}

public enum RESOURCE_TYPE

{

RESOURCETYPE_ANY = 0,

RESOURCETYPE_DISK = 1,

RESOURCETYPE_PRINT = 2,

RESOURCETYPE_RESERVED = 8,

}

public enum RESOURCE_USAGE

{

RESOURCEUSAGE_CONNECTABLE = 1,

RESOURCEUSAGE_CONTAINER = 2,

RESOURCEUSAGE_NOLOCALDEVICE = 4,

RESOURCEUSAGE_SIBLING = 8,

RESOURCEUSAGE_ATTACHED = 16,

RESOURCEUSAGE_ALL = (RESOURCEUSAGE_CONNECTABLE |

RESOURCEUSAGE_CONTAINER | RESOURCEUSAGE_ATTACHED),

}

public enum RESOURCE_DISPLAYTYPE

{

RESOURCEDISPLAYTYPE_GENERIC = 0,

RESOURCEDISPLAYTYPE_DOMAIN = 1,

RESOURCEDISPLAYTYPE_SERVER = 2,

RESOURCEDISPLAYTYPE_SHARE = 3,

RESOURCEDISPLAYTYPE_FILE = 4,

RESOURCEDISPLAYTYPE_GROUP = 5,

RESOURCEDISPLAYTYPE_NETWORK = 6,

RESOURCEDISPLAYTYPE_ROOT = 7,

RESOURCEDISPLAYTYPE_SHAREADMIN = 8,

RESOURCEDISPLAYTYPE_DIRECTORY = 9,

RESOURCEDISPLAYTYPE_TREE = 10,

RESOURCEDISPLAYTYPE_NDSCONTAINER = 11

}

[StructLayout(LayoutKind.Sequential)]

public struct NETRESOURCE

{

public RESOURCE_SCOPE dwScope;

public RESOURCE_TYPE dwType;

public RESOURCE_DISPLAYTYPE dwDisplayType;

public RESOURCE_USAGE dwUsage;

[MarshalAs(UnmanagedType.LPStr)]

public string lpLocalName;

[MarshalAs(UnmanagedType.LPStr)]

public string lpRemoteName;

[MarshalAs(UnmanagedType.LPStr)]

public string lpComment;

[MarshalAs(UnmanagedType.LPStr)]

public string lpProvider;

}

public class NetworkConnection

{

[DllImport("mpr.dll")]

public static extern int WNetAddConnection2A (NETRESOURCE[]

lpNetResource, string lpPassword, string lpUserName, int

dwFlags);

[DllImport("mpr.dll")]

public static extern int WNetCancelConnection2A (string sharename,

int dwFlags, int fForce);

public static int Connect (string remotePath, string localPath,

string username, string password)

{

NETRESOURCE[] share_driver = new NETRESOURCE[1];

share_driver[0].dwScope = RESOURCE_SCOPE.RESOURCE_GLOBALNET;

share_driver[0].dwType = RESOURCE_TYPE.RESOURCETYPE_DISK;

share_driver[0].dwDisplayType =

RESOURCE_DISPLAYTYPE.RESOURCEDISPLAYTYPE_SHARE;

share_driver[0].dwUsage =

RESOURCE_USAGE.RESOURCEUSAGE_CONNECTABLE;

share_driver[0].lpLocalName = localPath;

share_driver[0].lpRemoteName = remotePath;

Disconnect(localPath);

int ret = WNetAddConnection2A(share_driver, password, username,

1);

return ret;

}

public static int Disconnect (string localpath)

{

return WNetCancelConnection2A(localpath, 1, 1);

}

调用方式：

public static void TestNetWorkConnection()

{

string localpath = "X:";

//int status = NetworkConnection.Connect(@"//192.168.0.2/test",

localpath, @"test", "test");

int status = NetworkConnection.Connect("192.168.0.2//test",

localpath, @"test", "test");

if (status == (int)ERROR_ID.ERROR_SUCCESS)

{

FileStream fs = new FileStream(localpath + @"//123.txt",

FileMode.OpenOrCreate);

using (StreamWriter stream = new StreamWriter(fs))

{

stream.WriteLine("你好呀，成功了");

stream.Flush();

stream.Close();

}

fs.Close();

}

else

{

Console.WriteLine(status);

}

NetworkConnection.Disconnect(localpath);

}

参考文档：

http://support.microsoft.com/kb/173011

http://support.microsoft.com/kb/842789