C# 实现访问网络共享文件夹

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