string path = "\\192.168.0.2\delete\test.dat

<configuration>
   <system.web>
      <identity impersonate="true" userName="192.168.0.2Admin"
          password="pass123"//>
   </system.web>
</configuration>

public class NetworkManager : IDisposable
{
    private readonly string _networkName;

    public NetworkManager(string networkName)
    {
        _networkName = networkName;

        NetResource netResource = new NetResource
        {
            Scope = ResourceScope.GlobalNetwork,
            ResourceType = ResourceType.Any,
            DisplayType = ResourceDisplayType.Directory,
            RemoteName = networkName
        };

        int result = WNetAddConnection2(netResource, "ВАШ ПАРОЛЬ", "ВАШ ЛОГИН", 0);

        if (result != 0)
        {
            throw new Win32Exception(result);
        }
    }

    ~NetworkManager()
    {
        Dispose(false);
    }

    public void Dispose()
    {
        Dispose(true);
        GC.SuppressFinalize(this);
    }

    protected virtual void Dispose(bool disposing)
    {
        WNetCancelConnection2(_networkName, 0, true);
    }

    [DllImport("mpr.dll")]
    private static extern int WNetAddConnection2(NetResource netResource, string password, string username, int flags);

    [DllImport("mpr.dll")]
    private static extern int WNetCancelConnection2(string name, int flags, bool force);
}

using (NetworkManager network = new NetworkManager(@"\192.168.0.2"))
{
    // ваш код с подключением
}