asp.net访问网络路径方法-模拟用户登录

public class IdentityScope : IDisposable
{

// obtains user token
[DllImport("advapi32.dll", SetLastError = true)]
static extern bool LogonUser(string pszUsername, string pszDomain, string pszPassword,int dwLogonType, int dwLogonProvider, ref IntPtr phToken);

// closes open handes returned by LogonUser

[DllImport("kernel32.dll", CharSet = CharSet.Auto)]

extern static bool CloseHandle(IntPtr handle);

[DllImport("Advapi32.DLL")]
static extern bool ImpersonateLoggedOnUser(IntPtr hToken);

[DllImport("Advapi32.DLL")]
static extern bool RevertToSelf();

const int LOGON32_PROVIDER_DEFAULT = 0;

const int LOGON32_LOGON_NEWCREDENTIALS = 9;//域ò控?中D的?需è要a用?:Interactive = 2

private bool disposed;

/// <summary>
/// 登?录?
/// </summary>
/// <param name="sUsername">用?户§名?</param>
/// <param name="sDomain">域ò名?，?如?果?不?在ú域ò中D就í使1用?机ú器÷IP地?址·</param>
/// <param name="sPassword">密ü码?</param>
public IdentityScope(string sUsername, string sDomain, string sPassword)
{

// initialize tokens
IntPtr pExistingTokenHandle = new IntPtr(0);
IntPtr pDuplicateTokenHandle = new IntPtr(0);
try
{

// get handle to token
bool bImpersonated = LogonUser(sUsername, sDomain, sPassword,LOGON32_LOGON_NEWCREDENTIALS, LOGON32_PROVIDER_DEFAULT, ref pExistingTokenHandle);
if (true == bImpersonated)
{
if (!ImpersonateLoggedOnUser(pExistingTokenHandle))
{
int nErrorCode = Marshal.GetLastWin32Error();
throw new Exception("ImpersonateLoggedOnUser error;Code=" + nErrorCode);
}
}
else
{
int nErrorCode = Marshal.GetLastWin32Error();
throw new Exception("LogonUser error;Code=" + nErrorCode);

}

}
finally
{
// close handle(s)
if (pExistingTokenHandle != IntPtr.Zero)

CloseHandle(pExistingTokenHandle);

if (pDuplicateTokenHandle != IntPtr.Zero)

CloseHandle(pDuplicateTokenHandle);
}

}

protected virtual void Dispose(bool disposing)
{

if (!disposed)
{
RevertToSelf();
disposed = true;
}

}

public void Dispose()
{
Dispose(true);
}

}

using (IdentityScope c = new IdentityScope("administrator", "192.168.0.1", "11111"))
{
string[] filelist = System.IO.Directory.GetDirectories(@"\\192.168.0.1\folderName");
}