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这篇文章主要介绍了C#访问远程主机资源的方法有哪些，具有一定借鉴价值，感兴趣的朋友可以参考下，希望大家阅读完这篇文章之后大有收获，下面让小编带着大家一起了解一下。
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一、调用Net use命令
// 使用方法：
//if (Connect("192.168.1.48", "用户名", "密码"))
//{
// File.Copy(@"\\192.168.1.48\共享目录\test.txt", @"e:\\test.txt", true);
//}
public bool Connect(string remoteHost, string userName, string passWord)
{
bool Flag = true;
Process proc = new Process();
proc.StartInfo.FileName = "cmd.exe";
proc.StartInfo.UseShellExecute = false;
proc.StartInfo.RedirectStandardInput = true;
proc.StartInfo.RedirectStandardOutput = true;
proc.StartInfo.RedirectStandardError = true;
proc.StartInfo.CreateNoWindow = true;
try
{
proc.Start();
string command = @"net use \\" + remoteHost + " " + passWord + " " + " /user:" + userName + ">NUL";
proc.StandardInput.WriteLine(command);
command = "exit";
proc.StandardInput.WriteLine(command);
while (proc.HasExited == false)
{
proc.WaitForExit(1000);
}
string errormsg = proc.StandardError.ReadToEnd();
if (errormsg != "")
Flag = false;
proc.StandardError.Close();
}
catch (Exception ex)
{
Flag = false;
}
finally
{
proc.Close();
proc.Dispose();
}
return Flag;
}二、调用WNetAddConnection2、WNetAddConnection3或者NetUseAdd函数，进行磁盘映射。
using System;using System.Collections.Generic;using System.Text; using System.Runtime.InteropServices;
namespace WindowsApplication1{ public class MyMap { [DllImport("mpr.dll", EntryPoint = "WNetAddConnection2")] public static extern uint WNetAddConnection2( [In] NETRESOURCE lpNetResource, string lpPassword, string lpUsername, uint dwFlags); [DllImport("Mpr.dll")] public static extern uint WNetCancelConnection2( string lpName, uint dwFlags, bool fForce); [StructLayout(LayoutKind.Sequential)] public class NETRESOURCE { public int dwScope; public int dwType; public int dwDisplayType; public int dwUsage; public string LocalName; public string RemoteName; public string Comment; public string Provider; }
// remoteNetworkPath format: @"\\192.168.1.48\sharefolder" // localDriveName format: @"E:" public static bool CreateMap(string userName, string password, string remoteNetworkPath, string localDriveName) { NETRESOURCE myNetResource = new NETRESOURCE(); myNetResource.dwScope = 2; //2:RESOURCE_GLOBALNET myNetResource.dwType = 1; //1:RESOURCETYPE_ANY myNetResource.dwDisplayType = 3; //3:RESOURCEDISPLAYTYPE_GENERIC myNetResource.dwUsage = 1; //1: RESOURCEUSAGE_CONNECTABLE myNetResource.LocalName = localDriveName; myNetResource.RemoteName = remoteNetworkPath; myNetResource.Provider = null;
uint nret = WNetAddConnection2(myNetResource, password, userName, 0);
if (nret == 0) return true; else return false; }
// localDriveName format: @"E:" public static bool DeleteMap(string localDriveName) { uint nret = WNetCancelConnection2(localDriveName, 1, true);
if (nret == 0) return true; else return false; }
public void test() { // 注意： // remote、local、username的格式一定要正确，否则可能出现错误 string remote = @"\\192.168.1.48\generals"; string local = @"P:"; string username = @"Domain\UserName"; string password = @"Password"; bool ret = MyMap.CreateMap(username, password, remote, local); if (ret) { //do what you want: // ... //File.Copy("q:\\test.htm", "c:\\test.htm");
MyMap.DeleteMap(local); } } }}三、使用WebClient类
由于WebClient类可以上传下载文件，并且支持以http:、https:和file:开头的URI，所以可以用WebClient类来传输文件。
添加System.Net命名空间后使用如下代码下载文件：
private void Test1() { try { WebClient client = new WebClient(); NetworkCredential cred = new NetworkCredential("username", "password", "172.16.0.222"); client.Credentials = cred; client.DownloadFile("file://172.16.0.222/test/111.txt", "111.txt"); } catch (Exception ex) { // 如果网络很慢，而文件又很大，这时可能有超时异常（Time out）。 } }
public void Test2() { try { WebClient client = new WebClient(); NetworkCredential cred = new NetworkCredential("username", "password", "domain"); client.Credentials = cred; client.DownloadFile("file://172.16.0.222/test/111.txt", "111.txt"); } catch (Exception ex) { // 如果网络很慢，而文件又很大，这时可能有超时异常（Time out）。 } }类似的还可以试试WebRequest、FileWebRequest等：
WebRequest req = WebRequest.Create("file://138.12.12.14/generals/test.htm");
NetworkCredential cred = new NetworkCredential("username", "password", "IP");
req.Credentials = cred;
WebResponse response = req.GetResponse();
Stream strm = response.GetResponseStream();
StreamReader r = new StreamReader(strm);
... ...四、角色模拟