用其他用户替换当前正在运行EXE的Windows用户

  public class Impersonator : IDisposable
  {

    const int LOGON32_PROVIDER_DEFAULT = 0;
    const int LOGON32_LOGON_INTERACTIVE = 2;

    [DllImport(\"advapi32.dll\", SetLastError = true)]
    public static extern bool LogonUser(String lpszUsername, String lpszDomain, String lpszPassword, int dwLogonType, int dwLogonProvider, ref IntPtr phToken);

    [DllImport(\"kernel32.dll\", CharSet = CharSet.Auto)]
    public extern static bool CloseHandle(IntPtr handle);

    private IntPtr token = IntPtr.Zero;
    private WindowsImpersonationContext impersonated;
    private readonly string _ErrMsg = \"\";

    public bool IsImpersonating
    {
      get { return (token != IntPtr.Zero) && (impersonated != null); }
    }

    public string ErrMsg
    {
      get { return _ErrMsg; }
    }

    [PermissionSetAttribute(SecurityAction.Demand, Name = \"FullTrust\")]
    public Impersonator(string userName, string password, string domain)
    {
      StopImpersonating();

      bool loggedOn = LogonUser(userName, domain, password, LOGON32_LOGON_INTERACTIVE, LOGON32_PROVIDER_DEFAULT, ref token);
      if (!loggedOn)
      {
        _ErrMsg = new System.ComponentModel.Win32Exception().Message;
        return;
      }

      WindowsIdentity identity = new WindowsIdentity(token);
      impersonated = identity.Impersonate();
    }

    private void StopImpersonating()
    {
      if (impersonated != null)
      {
        impersonated.Undo();
        impersonated = null;
      }

      if (token != IntPtr.Zero)
      {
        CloseHandle(token);
        token = IntPtr.Zero;
      }
    }

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

using (Impersonator = new Impersonator(yourName,yourPassword,yourDomain))
{
 // Read files from network drives.
 // Other activities....
}