public void Clear()
{
while (flpListBox.Controls.Count != 0)
{
DetailedListItem item = (DetailedListItem)flpListBox.Controls[0];
flpListBox.Controls.Remove(item);
// remove the event hook
item.EventSelectChanged -= Item_SelectionChanged;
item.MouseEnter -= flpListBox_MouseEnter;
item.Dispose();
}
m_CurrentSelected = null;
}
public void RemoveItem(int _Index)
{
DetailedListItem item = (DetailedListItem)flpListBox.Controls[_Index];
int prevTop = item.Top;// int.MaxValue;
DetailedListItem newSelected = null;
item.tmrMouseLeave.Stop();
item.EventSelectChanged -= Item_SelectionChanged;
item.MouseEnter -= flpListBox_MouseEnter;
if (item.Selected == true)
{
if (flpListBox.Controls.Count > _Index + 1)
{
newSelected = ((DetailedListItem)flpListBox.Controls[_Index + 1]);
newSelected.Selected = true;
}
else if (_Index - 1 >= 0)
{
newSelected = ((DetailedListItem)flpListBox.Controls[_Index - 1]);
newSelected.Selected = true;
}
}
if (_Index == 0 && flpListBox.Controls.Count > 1)
{
flpListBox.Controls[1].Anchor = AnchorStyles.Left | AnchorStyles.Top;
flpListBox.Controls[1].Width = flpListBox.Width - (flpListBox.VerticalScroll.Visible == true ? SystemInformation.VerticalScrollBarWidth : 0);
}
flpListBox.Controls.Remove(item);
item.Dispose();
if (newSelected != null)
{
int deltaMove = newSelected.Top - prevTop;
int newScrollValue = flpListBox.VerticalScroll.Value + deltaMove;
if (newScrollValue > flpListBox.VerticalScroll.Maximum)
{
newScrollValue = flpListBox.VerticalScroll.Maximum;
}
if (newScrollValue < flpListBox.VerticalScroll.Minimum)
{
newScrollValue = flpListBox.VerticalScroll.Minimum;
}
flpListBox.VerticalScroll.Value = newScrollValue;
flpListBox.PerformLayout();
}
}
