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andy_olsen
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Using class.cs in form application

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Hi all

I'm trying to learn more about arraylist and how to use class.cs files, and I'm really stucked right now and would appreciate some help from you. I have a win form with 2 textboxes and 2 buttons and a few labels. I enter a surname and a lastname in each of the textboxes and click the first button. What I try to achieve is that both names will be collected in an arrayList, and let say I enter 5 different names and then I have a second button when I click that button I want to populate a label with those 5 names from my arrayList. Here is my code from form1.cs:

public void controllButton_Click(object sender, EventArgs e)
        {
            Person NewPerson = new Person();
            NewPerson.lastname = lastNameTextBox.Text;
            NewPerson.surname = surNameTextBox.Text;

            string sname = NewPerson.surname;
            string lname = NewPerson.lastname;

            NewPerson.Historian();
       }
private void historicButton_Click(object sender, EventArgs e)
        {
            Person NewPerson2 = new Person();
            NewPerson2.Hist();
            label1.Text = NewPerson2.lastname;
        }


And here is my code from Person.cs:
class Person
    {
        static ArrayList Historik = new ArrayList();

        public string lastname;
        public string surname;

        public string Lastname
        {
            get { return this.lastname; }
            set { this.lastname= value; }
        }
        public string Surname
        {
            get { return this.surname; }
            set { this.surname= value; }
        }
            public void Historian()
            {
                Historik.Add(lastname);
                Historik.Add(surname);
            }
           public string Hist()
            {
                foreach (Person s in Historik)
                {
                    return s.lastname;
                } 
            }
        }


I hope someone could help me with this, thank you.

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last answered 2 years ago

1 answers

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Try it like this:

private void controlButton_Click(object sender, EventArgs e)
{
    Person NewPerson = new Person();
    NewPerson.Lastname = lastNameTextBox.Text;
    NewPerson.Surname = surNameTextBox.Text;

    NewPerson.Historian();
}

private void historicButton_Click(object sender, EventArgs e)
{
    label1.Text = Person.Hist();
}

// ..
// person.cs
// ..
class Person
{
    static ArrayList Historik = new ArrayList();

    private string lastname; // should be private
    private string surname; // ditto

    public string Lastname
    {
        get { return this.lastname; }
        set { this.lastname = value; }
    }
    public string Surname
    {
        get { return this.surname; }
        set { this.surname = value; }
    }
    public void Historian()
    {
        Historik.Add(lastname);
        Historik.Add(surname);
    }
    public static string Hist() // should be static
    {
        string list = "";
        for (int i = 0; i < Historik.Count; i += 2)
        {
            list += (string)Historik[i] + " " + (string)Historik[i + 1] + "\r\n";
        }
        return list; 
    }
}

(x)
andy_olsen
60

Hi Vulpes, you are great as usual...Thank you very much.

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