TextChanged
The TextChanged fires when you change the selected item. It will fire automatically if the AutoPostBack="True".The event fires after the SelectedIndexChanged server event.
The event handler receives two parameters:
The instance of the listbox firing the event
An event arguments parameter containing no methods
protected void RadListBox1_TextChanged(object sender, EventArgs e)
{
TextBox.Text = RadListBox1.SelectedItem.Text;
}
Protected Sub RadListBox1_TextChanged(sender As Object, e As EventArgs)
TextBox.Text = RadListBox1.SelectedItem.Text
End Sub