Select only one item amidst two listboxes

Question

Oops! Guys, I wanted to select only one item in the middle of two listboxes, imagining the listbox as a radiobutton, if I select an item in one, it is no longer selected in the other. I tried so:

private void listBoxQuestoesObjetivas_SelectedIndexChanged(object sender, EventArgs e)
{
    listBoxQuestoesSubjetivas.ClearSelected();
}

private void listBoxQuestoesSubjetivas_SelectedIndexChanged(object sender, EventArgs e)
{
    listBoxQuestoesObjetivas.ClearSelected();
}

The problem is that when I click on one, it desiccates both, it’s very strange '-' Remembering that I am using Microsoft.Net Framework 2.0

Answer 1

Try the following, but logically changing the names of the controls to your.

    private void listBox1_Click(object sender, EventArgs e)
    {
        listBox2.SelectedIndex = -1;
    }

    private void listBox2_Click(object sender, EventArgs e)
    {
        listBox1.SelectedIndex = -1;
    }

That’s how it works too:

    private void listBox1_Click(object sender, EventArgs e)
    {
        listBox2.ClearSelected();
    }

    private void listBox2_Click(object sender, EventArgs e)
    {
        listBox1.ClearSelected();
    }