private void buttonAdd_Click(object sender, System.EventArgs e)
{
try
{
TreeListViewItem newitem = new TreeListViewItem("treeListView" + _items.Owner.ItemsCount.ToString());
TreeNode node = new TreeNode(newitem.Text);
node.Tag = newitem;
if (treeView1.SelectedNode != null)
{
TreeListViewItem item = (TreeListViewItem)treeView1.SelectedNode.Tag;
if (item.Items.Add(newitem) > -1)
{
treeView1.SelectedNode.Nodes.Add(node);
}
}
else
if (_items.Add(newitem) > -1)
{
treeView1.Nodes.Add(node);
}
if (node.Index > -1)
{
treeView1.SelectedNode = node;
}
}
catch (Exception ex) { MessageBox.Show(ex.Message); }
}
internal void GetCheckedItems(ref TreeListViewItemCollection items)
{
if (Checked)
{
items.Add(this);
}
foreach (TreeListViewItem item in Items)
{
item.GetCheckedItems(ref items);
}
}
private TreeListViewItemCollection GetParentsInHierarch()
{
TreeListViewItemCollection temp = Parent != null?
Parent.GetParentsInHierarch() : new TreeListViewItemCollection();
if (Parent != null)
{
temp.Add(Parent);
}
return(temp);
}
/// <summary>
/// Gets the items that are visible in the TreeListView
/// </summary>
/// <returns>A collection of items</returns>
public TreeListViewItemCollection GetVisibleItems()
{
TreeListViewItemCollection visibleItems = new TreeListViewItemCollection();
if(base.Items.Count == 0) return visibleItems;
int firstItemIndex = TopItem.Index;
int itemsPerPageCount =
APIsUser32.SendMessage(Handle, (int) APIsEnums.ListViewMessages.GETITEMCOUNT, IntPtr.Zero, IntPtr.Zero);
int lastVisibleItemIndex = firstItemIndex + itemsPerPageCount > base.Items.Count ?
base.Items.Count : firstItemIndex + itemsPerPageCount;
for(int i = firstItemIndex; i < lastVisibleItemIndex; i++)
visibleItems.Add((TreeListViewItem) base.Items[i]);
return visibleItems;
}
internal void GetCheckedItems(ref TreeListViewItemCollection items)
{
if (Checked) items.Add(this);
foreach (TreeListViewItem item in Items)
item.GetCheckedItems(ref items);
}
