How to refresh DataSource of a ListBox

Question

Form has one Combobox and one ListBox. When the \"Add\" button is clicked, I want to add the selected item from the ComboBox to the ListBox.

public partial c         


        

Answer 1

I would suggest to use BindingSource as it would properly update connected controls.

public partial class MyForm : Form
{
    List data = new List();
    BindingSource bs = new BindingSource();

    public MyForm()
    {
        IntializeComponents();
        bs.DataSource = data;

       listBox1.DisplayMember = "Name";
       listBox1.ValueMember = "Id";
       listBox1.DataSource = bs;
    }

    private void buttonAddData_Click(object sender, EventArgs e)
    {
       var selection = (MyData)comboBox1.SelectedItem;
       data.Add(selection);

       bs.ResetBindings(false);
    }
}

Changing controls data source on fly produces strange result sometime.