protected override void WriteHtml(HtmlTextWriter writer)
{
var builder = new TreeViewHtmlBuilder(this);
IHtmlNode treeViewTag = builder.TreeViewTag();
if (Items.Any() && !this.UsesTemplates())
{
if (SelectedIndex != -1 && Items.Count < SelectedIndex)
{
throw new ArgumentOutOfRangeException(Exceptions.IndexOutOfRange);
}
//this loop is required because of SelectedIndex feature.
if (HighlightPath)
{
Items.Each(HighlightSelectedItem);
}
Items.Each((item, index) =>
{
if (!this.isPathHighlighted)
{
if (index == this.SelectedIndex)
{
item.Selected = true;
if (item.Items.Any() || item.Template.HasValue())
{
item.Expanded = true;
}
}
}
if (item.HasChildren)
{
item.Expanded = false;
}
if (ExpandAll)
{
ExpandAllChildrens(item);
}
if (string.IsNullOrEmpty(item.Id))
{
item.Id = item.Text;
}
WriteItem(item, treeViewTag.Children[0], builder);
});
}
treeViewTag.WriteTo(writer);
base.WriteHtml(writer);
}
