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C# 带用户密码访问网络共享
原文:C# 带用户密码访问网络共享
调用WNetUseConnection API
函数详细参数参考：https://msdn.microsoft.com/en-us/library/windows/desktop/aa385482(v=vs.85).aspx
C# 调用WNetUseConnection连接共享类的代码：
NetworkShareConnect.cs
//引入命名空间//using System.Runtime.InteropServices;public class NetworkShareConnect { #region WNetUseConnection枚举参数 //dwScope const int RESOURCE_CONNECTED = 0x00000001; const int RESOURCE_GLOBALNET = 0x00000002; const int RESOURCE_REMEMBERED = 0x00000003; //dwType const int RESOURCETYPE_ANY = 0x00000000; const int RESOURCETYPE_DISK = 0x00000001; const int RESOURCETYPE_PRINT = 0x00000002; //dwDisplayType 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; //dwUsage const int RESOURCEUSAGE_CONNECTABLE = 0x00000001; const int RESOURCEUSAGE_CONTAINER = 0x00000002; //dwFlags 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参数 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 = http://www.mamicode.com/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 { //定义错误类结构体 public int num; public string message; public ErrorClass(int num, string message) { this.num = num; this.message = message; } } //连接失败信息汇总 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) { //遍历获得错误代码 foreach (ErrorClass er in ERROR_LIST) { if (er.num == errNum) return er.message; } return "Error: Unknown, " + errNum; } #endregion //调用系统函数WNetUseConnection //用于连接共享 [DllImport("Mpr.dll")] private static extern int WNetUseConnection( IntPtr hwndOwner, NETRESOURCE lpNetResource, string lpPassword, string lpUserID, int dwFlags, string lpAccessName, string lpBufferSize, string lpResult ); //用于删除连接 [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 = "";//映射到本地的盘符，如"Z:"。不做驱动器映射，可为空 public string lpRemoteName = "";//共享的网络路径 public string lpComment = ""; public string lpProvider = ""; } /// <summary> /// 连接共享 /// </summary> /// <param name="remoteUNC">共享网络路径</param> /// <param name="username">登录用户名</param> /// <param name="password">密码</param> /// <returns></returns> public static string connectToShare(string remoteUNC, string username, string password) { return connectToRemote(remoteUNC, username, password, false); } /// <summary> /// 没用户密码连接 /// </summary> /// <param name="remoteUNC">共享网络路径</param> /// <returns></returns> public static string connectToShare(string remoteUNC) { return connectToRemote(remoteUNC, "", "", true); } private static string connectToRemote(string remoteUNC, string username, string password, bool promptUser) { NETRESOURCE nr = new NETRESOURCE { dwType = RESOURCETYPE_DISK, lpRemoteName = remoteUNC }; 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); } }
测试：
注意：断开共享后，系统缓存还在，没能即时失去连接，在1-3分钟内仍然可以访问共享。
有时候要注销才能失去连接，原因未明 %>_<%
C# 带用户密码访问网络共享
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