I am making a live subway map, where I have divs representing trains, moving up and down the map. I had no problem making them move, but I would like them to stop for a few seconds at each station. Can someone tell me how I can include this in my code? What line do I need to add, and where?

window.onload = () => {
startSetTimeoutAnimation();
};

function startSetTimeoutAnimation() {
const refreshRate = 1000 / 60;
const maxXPosition = 400;
let rect = document.getElementById('rect0');
let speedX = 0.01;
let positionX = 25;

window.setInterval(() => {
  positionX = positionX + speedX;
  if (positionX > maxXPosition || positionX < 25) {
    speedX = speedX \* (-1);
  }
  rect.style.top = positionX + 'px';
}, refreshRate);

}

I know, but it is a requirement for a project I am making at my university. My teacher has told me to find help to solve these problems online, and that is why I am here. It was also his requirement to put binary code on a web page, and I still think it sounds illogical. But upon reading your comments, I am happy that I am not the only one who thinks this way. I have spent 2 weeks now trying to put binary code inside a web page, and I thought it was me who had overlooked something... Anyway, I just need help fixing the System.Runtime.Serialization.SerializationException error (the one I mention in the previous post), and then I hopefully won't have to ask for anymore help. I know as programmers it must be annoying having to create solutions that do not make sense :)

Ah of course. Sometimes it surprises me how simple the solution is. I tend to overthink things :-D The only issue now is that I get a

System.Runtime.Serialization.SerializationException

at

Mykey = (int)info.GetValue("Keynumber", typeof(int));

Do I need to add Keynumber in my other class file?

using System;
using System.Collections;
using System.Collections.Generic;
using System.Linq;
using System.Xml.Serialization;
using System.IO;
using System.Runtime.Serialization.Formatters.Binary;

namespace Keycard
{
class Class1
{
public static void Main(string[] args)
{
Keycard k1 = new Keycard("John", 123);

        Stream stream = File.Open("KeycardData.dat",
            FileMode.Create);

        BinaryFormatter bf = new BinaryFormatter();

        bf.Serialize(stream, k1);
        stream.Close();

        k1 = null;

        stream = File.Open("KeycardData.dat", FileMode.Open);

        bf = new BinaryFormatter();

        k1 = (Keycard)bf.Deserialize(stream);
        stream.Close();
        Console.WriteLine(k1.ToString());
        Console.ReadLine();
    }

}

}

Hey Phil. Thanks a lot I almost got it to work. Only one error left thankfully.

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Runtime.Serialization;
using System.Runtime.Serialization.Formatters.Binary;

namespace Keycard
{
[Serializable()]
public class Person : ISerializable
{
protected string name;

    public Person(string name)
    {
        this.Name = name;
    }

    public string Name
    {
        get { return name; }
        set { name = value; }
    }

    public void GetObjectData(SerializationInfo info, StreamingContext context)
    {

        info.AddValue("Name", name);

    }
    public Person(SerializationInfo info, StreamingContext context)
    {
        Name = (string)info.GetValue("Name", typeof(string));
    }
}
\[Serializable()\]
public class Keycard : Person
{
    protected int mykey;

    public Keycard(string name)
        : base (name)
    {
        this.Mykey = -1;
    }
    public Keycard(string name, int mykey) : base(name)
    {
        this.Mykey = mykey;
    }
    public int Mykey
    {
        get { return mykey;  }
        set { mykey = value; }
    }

    public new void GetObjectData(SerializationInfo info, StreamingContext context)
    {

        info.AddValue("Keynumber", mykey);

    }
    public Keycard(SerializationInfo info, StreamingContext context)
    {
       Mykey = (int)info.GetValue("Keynumber", typeof(int));
    }
    public override string ToString()
    {
        return "Name: " + name + " ---- " + " Keynumber: " + mykey;
    }
}

}

The only problem here is this line

public Keycard(SerializationInfo info, StreamingContext context)

I get the constructor error again. I understood your solution with the default name arguement, but how do I apply that logic here?

Yeah, that is also how I thought I should do it. But I am getting a ton of errors when doing so. "Person does not contain a constructor that takes 0 arguements" "mykey does not exist within current context" "method must have a return type" This is how I wrote it

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Runtime.Serialization;
using System.Runtime.Serialization.Formatters.Binary;

namespace Keycard
{
[Serializable()]
public class Person : ISerializable
{
protected string name;

    public Person(string name)
    {
        this.Name = name;
    }

    public string Name
    {
        get { return name; }
        set { name = value; }
    }

    \[Serializable()\]
    public class Keycard : Person
    {
        protected int mykey;

        public Keycard(int mykey)
        {
            this.Mykey = mykey;
        }
        public int Mykey
        {
            get { return mykey; }
            set { mykey = value; }
        }
    }

    public void GetObjectData(SerializationInfo info, StreamingContext context)
    {

        info.AddValue("Name", name);
        info.AddValue("Keynumber", mykey);

    }
    public Person(SerializationInfo info, StreamingContext context)
    {
        Name = (string)info.GetValue("Name", typeof(string));
    }
    public Keycard(SerializationInfo info, StreamingContext context)
    {
        Mykey = (int)info.GetValue("Keynumber", typeof(int));
    }

    public override string ToString()
    {
        return "Name: " + name + " ---- " + " Keynumber: " + mykey;
    }
}

}

I have finally gotten my code to work, but there is one thing left that I want to do. In my code I had made a Keycard class that had a name and a keynumber. What I would like to do is to change the Keycard class to Person Class, which keeps the Name string, and then add the Keycard class as a child to the Person class, which keeps the Mykey int. I have done inheritance before, but I have not tried doing it in a file that also uses Serialization. How should the code look? Also, a small bonus question. As you can see, my code gives a binary output. Like with XML, is there a way to show this binary output on a web application?

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Runtime.Serialization;
using System.Runtime.Serialization.Formatters.Binary;

namespace Keycard
{
[Serializable()]
public class Keycard : ISerializable
{
protected string name;
protected int mykey;

    public Keycard(string name, int mykey)
    {
        this.Name = name;
        this.Mykey = mykey;
    }

    public string Name
    {
        get { return name; }
        set { name = value; }
    }

    public int Mykey
    {
        get { return mykey; }
        set { mykey = value; }
    }

    public void GetObjectData(SerializationInfo info, StreamingContext context)
    {

        info.AddValue("Name", name);
        info.AddValue("Keynumber", mykey);

    }
    public Keycard(SerializationInfo info, StreamingContext context)
    {
        Name = (string)info.GetValue("Name", typeof(string));
        Mykey = (int)info.GetValue("Keynumber", typeof(int));
    }

    public override string ToString()
    {
        return "Name: " + name + " ---- " + " Keynumber: " + mykey;
    }
}

}

using System;
using System.Collections;
using System.Collections.Generic;
using System.Linq;
using System.Xml.Serialization;
using System.IO;
using System.Runtime.Serialization.Formatters.Binary;

namespace Keycard
{
class Class1
{
public static void Main(string[] args)
{
Keycard d1 = new Keycard("John", 102030);

        Stream stream = File.Open("KeycardData.dat",
            FileMode.Create);

        BinaryFormatter bf = new BinaryFormatter();

        bf.Serialize(stream, d1);

Thanks. I got the binary working. With XML I get an error "cannot be serialized because it does not have a parameterless constructor" at this part:

XmlSerializer serializer = new XmlSerializer(typeof(Keycard));

Not sure what to change/add. This is how the code looks now after creating it inside a console application.

using System;
using System.Collections;
using System.Collections.Generic;
using System.Linq;
using System.Xml.Serialization;
using System.IO;
using System.Runtime.Serialization.Formatters.Binary;

namespace Keycard
{
class Class1
{
public static void Main(string[] args)
{
Keycard d1 = new Keycard("John", 102030);

        Stream stream = File.Open("KeycardData.dat",
            FileMode.Create);

        BinaryFormatter bf = new BinaryFormatter();

        bf.Serialize(stream, d1);
        stream.Close();

        d1 = null;

        stream = File.Open("KeycardData.dat", FileMode.Open);

        bf = new BinaryFormatter();

        d1 = (Keycard)bf.Deserialize(stream);
        stream.Close();
        Console.WriteLine(d1.ToString());

        XmlSerializer serializer = new XmlSerializer(typeof(Keycard));

        using (TextWriter tw = new StreamWriter(@"C\\Brugere\\Marc8\\source\\repos\\keycards.xml"))
        {
            serializer.Serialize(tw, d1);
        }

        d1 = null;

        XmlSerializer deserializer = new XmlSerializer(typeof(Keycard));
        TextReader reader = new StreamReader(@"C\\Brugere\\Marc8\\source\\repos\\keycards.xml");
        object obj = deserializer.Deserialize(reader);
        d1 = (Keycard)obj;
        reader.Close();
        Console.WriteLine(d1.ToString());
    }

}

}

I have been trying to experiment with XML and Binary files. I did so by re-writing a code I made in an ASP NET Web Application. Keycard.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Runtime.Serialization;
using System.Runtime.Serialization.Formatters.Binary;

namespace Keycard
{
[Serializable()]
public class Keycard : ISerializable
{
protected string name;
protected int mykey;

    public Keycard(string name, int mykey)
    {
        this.Name = name;
        this.Mykey = mykey;
    }

    public string Name
    {
        get { return name; }
        set { name = value; }
    }

    public int Mykey
    {
        get { return mykey; }
        set { mykey = value; }
    }

    public void GetObjectData(SerializationInfo info, StreamingContext context)
    {

        info.AddValue("Name", name);
        info.AddValue("Keynumber", mykey);

    }
    public Keycard(SerializationInfo info, StreamingContext context)
    {
        Name = (string)info.GetValue("Name", typeof(string));
        Mykey = (int)info.GetValue("Keynumber", typeof(int));
    }

    public override string ToString()
    {
        return "Name: " + name + " ---- " + " Keynumber: " + mykey;
    }
}

}

index.aspx.cs

using System;
using System.Collections;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Configuration;
using System.Xml.Serialization;
using System.IO;
using System.Runtime.Serialization.Formatters.Binary;

namespace Keycard
{
public partial class Index : System.Web.UI.Page
{
public void Main(string[] args)
{
Keycard d1 = new Keycard("John", 102030);

        Stream stream = File.Open("KeycardData.dat",
            FileMode.Create);

        BinaryFormatter bf = new BinaryFormatter();

        bf.Serialize(stream, d1);
        stream.Close();

        d1 = null;

        stream = File.Open("KeycardData.dat", FileMode.Open);

        bf = new BinaryFormatter();

        d1 = (Keycard)bf.Deserialize(stream);
        stream.Close();
        Console.WriteLine(d1.ToString());

        XmlSerializer serializer = new XmlSerializer(typeof(Keycard

Ah, what an idiot I was. In Inhereits, I had written "index" instead of "Index". Thanks a lot for helping me =)

Hi again and thanks once again. I did do ask you said. The reason why I tried playing around with the ListBox line is because I am getting an CS0103 error: "The name ListBoxResults does not exist in the current context", which I don't get, because I looked in my index file. It says

I checked if the namespace was the issue, but that was not that case. However, the object reference error is gone, just like you said =)

Okay, I removed the property and also changed "ListBoxResults" to simply "ListBox". There are some problems remaining. I will list the errors here (sorry for not doing so at first)

        ListBox.Items.Add(d1.ToString());
        ListBox.Items.Add(d2.ToString());
        ListBox.Items.Add(a1.ToString());

Here I get the error: "An object reference is required for the non-static field, method, or property." If I remember correctly, a solution to this would be to make a static ArrayList, but I am not sure how I can do it for this code. Error no. 2

public virtual bool ChangeEmail(string email)
{
Email = email;
return true;
}

Error: "Property or indexer cannot be assigned to -- it is read only"

Error no. 3

    public Driver(string v1, string v2, string v3, string v4, string v5)
    {
        this.v1 = v1;
        this.v2 = v2;
        this.v3 = v3;
        this.v4 = v4;
        this.v5 = v5;
    }

Error message: There is no argument given that corresponds to the required formal parameter of 'firstName' of 'Person.Person (string, string, int, string)'

Thanks a ton for being patient with me, you guys.

I am very new to ASP.net and C#, so I am trying my best, but there are stille many things that confuse me, especially because when I am looking at various examples online they give me different answers to the same solution, which just makes it even more confusing. I made a person class, with two subclasses (driver and admin), but I can not get the ArrayList to show up when I run my Index file. I only get a parse error. What do I need to change to make this work? My person class

public class Person
{
public Person(string firstName, string lastName, int age, string email)
{
FirstName = firstName;
LastName = lastName;
Age = age;
Email = email;
}
public string FirstName { get; set; }
public string LastName { get; set; }
public int Age { get; set; }
public string Email { get; }
public virtual bool ChangeEmail(string email)
{
Email = email;
return true;
}
public override string ToString()
{
return $"Name: {FirstName} {LastName}, Age: {Age}, E-mail: {Email}";
}
}

My subclasses

public class Driver : Person
{
private string v1;
private string v2;
private string v3;
private string v4;
private string v5;
public Driver(string firstName, string lastName, int age, string email, int
licenceNumber)
: base(firstName, lastName, age, email)
{
LicenceNumber = licenceNumber;
}
public Driver(string v1, string v2, string v3, string v4, string v5)
{
this.v1 = v1;
this.v2 = v2;
this.v3 = v3;
this.v4 = v4;
this.v5 = v5;
}
public int LicenceNumber { get; set; }
public override string ToString()
{
return $"Role: Traindriver, LicenceNumber: {LicenceNumber}, " + base.ToString();
}
}
public class Admin : Person
{
public Admin(string firstName, string lastName, int age, string email)
: base(firstName, lastName, age, email)
{
}
public override bool ChangeEmail(string email)
{
if (!email.EndsWith("@pig.dk", StringComparison.InvariantCultureIgnoreCase))
return false;
return base.ChangeEmail(email);
}
public override string ToString()
{
return $"Role: Admin, " + base.ToString();
}
}
}

My ArrayList

namespace Pig
{
public partial class Index : System.Web.UI.Page
{
public object ListBoxResults { get; private set; }
public object DriverListBox { get; private set; }
protected void Page_Load(object sender, EventArgs e)
{
Driver d1 = new Driver("Hans", "Christensen", 32, "hans@pig.dk", 123456);
Driver d2 = new Driver("Peter", "Jensen", 40, "