private void CloseListBox()
{
listBoxOpened = false;
if (listBoxPanel == null)
{
return;
}
listBoxPanel.listBox.SelectedIndexChanged -= ListBoxOnSelectedIndexChanged;
listBoxPanel.listBox.MouseUp -= ListBoxOnMouseUp;
listBoxPanel.listBox.KeyDown -= ListBoxOnKeyDown;
listBoxPanel.listBox.Disposed -= ListBoxOnDisposed;
listBoxPanel.Dispose();
listBoxPanel = null;
OnDropDownClosed(EventArgs.Empty);
listBoxRecentlyClosed = true;
}
private void CreateListBox()
{
if (listBoxPanel != null)
{
listBoxPanel = null;
return;
}
if (listBoxRecentlyClosed)
{
return;
}
var screenLocation = PointToScreen(Point.Empty);
var height = ItemHeight * (Items.Count > MaxDropDownItems ? MaxDropDownItems : Items.Count);
if (height < ItemHeight)
{
height = ItemHeight;
}
listBoxPanel = new ComboListBoxPanel(this);
listBoxPanel.Location = new Point(screenLocation.X, screenLocation.Y + Height);
listBoxPanel.Size = new Size(Width, height + 4); // + Vertical padding for borders.
listBoxPanel.InitializeComponent();
listBoxPanel.listBox.SelectedIndexChanged += ListBoxOnSelectedIndexChanged;
listBoxPanel.listBox.MouseUp += ListBoxOnMouseUp;
listBoxPanel.listBox.KeyDown += ListBoxOnKeyDown;
listBoxPanel.listBox.Disposed += ListBoxOnDisposed;
listBoxPanel.uwfContext = true;
listBoxPanel.UpdateListBoxItems(string.Empty);
OnDropDown(EventArgs.Empty);
listBoxOpened = true;
}
private void ApplySelectedItem()
{
if (listBoxPanel == null)
{
return;
}
var listSelectedItem = listBoxPanel.listBox.SelectedItem;
for (int i = 0; i < Items.Count; i++)
{
if (Items[i] != listSelectedItem)
{
continue;
}
Text = listSelectedItem != null?listSelectedItem.ToString() : "";
SelectedItem = listSelectedItem;
break;
}
listBoxPanel.Dispose();
listBoxPanel = null;
}
