解决问题的方法是使用称为WNetUseConnection的Win32 API 。
使用此功能可通过身份验证连接到UNC路径，而不是映射驱动器 。
即使您不在同一域中，并且具有不同的用户名和密码，这也将允许您连接到远程计算机。
一旦使用了WNetUseConnection，就可以通过UNC路径访问文件，就好像您在同一域中一样。最好的方法可能是通过内置的共享管理程序。
示例：\计算机名 c $ 程序文件文件夹 file.txt
这是一些使用WNetUseConnection的示例C＃代码。
注意，对于NetResource，应为lpLocalName和lpProvider传递null。dwType应该为RESOURCETYPE_DISK。lpRemoteName应该是\
ComputerName。
using System;using System.Runtime.InteropServices ;using System.Threading;namespace ExtremeMirror{ public class PinvokeWindowsNetworking { #region Consts const int RESOURCE_ConNECTED = 0x00000001; const int RESOURCE_GLOBALNET = 0x00000002; const int RESOURCE_REMEMBERED = 0x00000003; const int RESOURCETYPE_ANY = 0x00000000; const int RESOURCETYPE_DISK = 0x00000001; const int RESOURCETYPE_PRINT = 0x00000002; const int RESOURCEDISPLAYTYPE_GENERIC = 0x00000000; const int RESOURCEDISPLAYTYPE_DOMAIN = 0x00000001; const int RESOURCEDISPLAYTYPE_SERVER = 0x00000002; const int RESOURCEDISPLAYTYPE_SHARE = 0x00000003; const int RESOURCEDISPLAYTYPE_FILE = 0x00000004; const int RESOURCEDISPLAYTYPE_GROUP = 0x00000005; const int RESOURCEUSAGE_ConNECTABLE = 0x00000001; const int RESOURCEUSAGE_ConTAINER = 0x00000002; const int CONNECT_INTERACTIVE = 0x00000008; const int CONNECT_prompt = 0x00000010; const int CONNECT_REDIRECT = 0x00000080; const int CONNECT_UPDATE_PROFILE = 0x00000001; const int CONNECT_COMMANDLINE = 0x00000800; const int CONNECT_CMD_SAVECRED = 0x00001000; const int CONNECT_LOCALDRIVE = 0x00000100; #endregion #region Errors const int NO_ERROR = 0; const int ERROR_ACCESS_DENIED = 5; const int ERROR_ALREADY_ASSIGNED = 85; const int ERROR_BAD_DEVICE = 1200; const int ERROR_BAD_NET_NAME = 67; const int ERROR_BAD_PROVIDER = 1204; const int ERROR_CANCELLED = 1223; const int ERROR_EXTENDED_ERROR = 1208; const int ERROR_INVALID_ADDRESS = 487; const int ERROR_INVALID_PARAMETER = 87; const int ERROR_INVALID_PASSWORD = 1216; const int ERROR_MORE_DATA = 234; const int ERROR_NO_MORE_ITEMS = 259; const int ERROR_NO_NET_OR_BAD_PATH = 1203; const int ERROR_NO_NETWORK = 1222; const int ERROR_BAD_PROFILE = 1206; const int ERROR_CANNOT_OPEN_PROFILE = 1205; const int ERROR_DEVICE_IN_USE = 2404; const int ERROR_NOT_ConNECTED = 2250; const int ERROR_OPEN_FILES = 2401; private struct ErrorClass { public int num; public string message; public ErrorClass(int num, string message) { this.num = num; this.message = message; } } // Created with excel formula: // ="new ErrorClass("&A1&", """&PROPER(SUBSTITUTE(MId(A1,7,LEN(A1)-6), "_", " "))&"""), " private static ErrorClass[] ERROR_LIST = new ErrorClass[] { new ErrorClass(ERROR_ACCESS_DENIED, "Error: Access Denied"), new ErrorClass(ERROR_ALREADY_ASSIGNED, "Error: Already Assigned"), new ErrorClass(ERROR_BAD_DEVICE, "Error: Bad Device"), new ErrorClass(ERROR_BAD_NET_NAME, "Error: Bad Net Name"), new ErrorClass(ERROR_BAD_PROVIDER, "Error: Bad Provider"), new ErrorClass(ERROR_CANCELLED, "Error: Cancelled"), new ErrorClass(ERROR_EXTENDED_ERROR, "Error: Extended Error"), new ErrorClass(ERROR_INVALID_ADDRESS, "Error: Invalid Address"), new ErrorClass(ERROR_INVALID_PARAMETER, "Error: Invalid Parameter"), new ErrorClass(ERROR_INVALID_PASSWORD, "Error: Invalid Password"), new ErrorClass(ERROR_MORE_DATA, "Error: More Data"), new ErrorClass(ERROR_NO_MORE_ITEMS, "Error: No More Items"), new ErrorClass(ERROR_NO_NET_OR_BAD_PATH, "Error: No Net Or Bad Path"), new ErrorClass(ERROR_NO_NETWORK, "Error: No Network"), new ErrorClass(ERROR_BAD_PROFILE, "Error: Bad Profile"), new ErrorClass(ERROR_CANNOT_OPEN_PROFILE, "Error: Cannot Open Profile"), new ErrorClass(ERROR_DEVICE_IN_USE, "Error: Device In Use"), new ErrorClass(ERROR_EXTENDED_ERROR, "Error: Extended Error"), new ErrorClass(ERROR_NOT_CONNECTED, "Error: Not Connected"), new ErrorClass(ERROR_OPEN_FILES, "Error: Open Files"), }; private static string getErrorForNumber(int errNum) { foreach (ErrorClass er in ERROR_LIST) { if (er.num == errNum) return er.message; } return "Error: Unknown, " + errNum; } #endregion [Dllimport("Mpr.dll")] private static extern int WNetUseConnection( IntPtr hwndOwner, NETRESOURCE lpNetResource, string lpPassword, string lpUserID, int dwFlags, string lpAccessName, string lpBufferSize, string lpResult ); [Dllimport("Mpr.dll")] private static extern int WNetCancelConnection2( string lpName, int dwFlags, bool fForce ); [StructLayout(LayoutKind.Sequential)] private class NETRESOURCE { public int dwScope = 0; public int dwType = 0; public int dwDisplayType = 0; public int dwUsage = 0; public string lpLocalName = ""; public string lpRemoteName = ""; public string lpComment = ""; public string lpProvider = ""; } public static string connectToRemote(string remoteUNC, string username, string password) { return connectToRemote(remoteUNC, username, password, false); } public static string connectToRemote(string remoteUNC, string username, string password, bool promptUser) { NETRESOURCE nr = new NETRESOURCE(); nr.dwType = RESOURCETYPE_DISK; nr.lpRemoteName = remoteUNC; // nr.lpLocalName = "F:"; int ret; if (promptUser) ret = WNetUseConnection(IntPtr.Zero, nr, "", "", CONNECT_INTERACTIVE | CONNECT_prompt, null, null, null); else ret = WNetUseConnection(IntPtr.Zero, nr, password, username, 0, null, null, null); if (ret == NO_ERROR) return null; return getErrorForNumber(ret); } public static string disconnectRemote(string remoteUNC) { int ret = WNetCancelConnection2(remoteUNC, CONNECT_UPDATE_PROFILE, false); if (ret == NO_ERROR) return null; return getErrorForNumber(ret); } }}
