Question

Hi I’m trying to see the elements of an array in a listbox, my array is in a class, but I dont know how to see the elements of the array in a windows form listbox.
This is my code:

 NumSepaERG[0] = Convert.ToDouble(columnas[1]);
 ListBox listbox2 = new ListBox();
 listbox2.Items.Add(NumSepaERG[0]);

But I know how view the elements in the listbox.

Answer 1

ListBox listBox1 = new ListBox();
// add items 
listBox1.Items.Add(NumSepaERG[0]);
// add to controls 
Controls.Add(listBox1);

if you have array as items then you can use AddRange method as:

listBox1.Items.AddRange(NumSepaERG);
Controls.Add(listBox1);

Update

create object of your class which contain array…

e.g. :

public partial class Form1 : Form
{
    public Form1()
    {
        InitializeComponent();
        ListBox listBox1 = new ListBox();
        MyClass obj = new MyClass();
        listBox1.DataSource = obj.NumSepaERG;
        Controls.Add(listBox1);
    }
}
public class MyClass
{
    public double[] NumSepaERG { get; set; }
    public MyClass()
    {
        NumSepaERG =new double[] {2.0, 5.6};
    }
}