C#访问网络共享文件夹的方法

using System.Runtime.InteropServices; 
 
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); 
  } 
 
} 

public 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","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); 
  }