private void BTN_OverWrite_Click(object sender, EventArgs e)
{
if (!CheckInputBeingValid(TXT_NewEle.Text, TXT_NewVal.Text) ||
!CheckIndexBeingValid(LST_Queue.SelectedIndex))
{
return;
}
QueueElement element = new QueueElement(TXT_NewEle.Text, TXT_NewVal.Text);
if (elements.Count == 0)
{
elements.Add(element);
LST_Queue.Items.Add(element);
}
else
{
if (!CheckIndexBeingValid(LST_Queue.SelectedIndex))
{
return;
}
elements[LST_Queue.SelectedIndex] = element;
LST_Queue.Items[LST_Queue.SelectedIndex] = element;
}
UpdateFrontThreeElementDisplay();
}
private void BTN_Dequeue_Click(object sender, EventArgs e)
{
if (!CheckIndexBeingValid(LST_Queue.SelectedIndex))
{
return;
}
QueueElement temp = elements[LST_Queue.SelectedIndex];
txtDeqEle.Text = temp.Element.ToString();
txtDeqVal.Text = temp.Value.ToString();
elements.RemoveAt(LST_Queue.SelectedIndex);
LST_Queue.Items.RemoveAt(LST_Queue.SelectedIndex);
UpdateFrontThreeElementDisplay();
}