get all items in RadTreeList include collapse items

[Joehom]

ask I know for RadTreeList1.Items is only can get currently visible items, which mean those collapse item will not get into the list. Can I know any API that can get all items in RadTreeList include collapse item.

[Shinu]

Hi,

Try the following.
C#:

protected void Button2_Click(object sender, EventArgs e)
{
  foreach (TreeListDataItem parentitem in RadTreeList1.Items)
  {
    if (parentitem.ChildItems.Count > 0)
    {
         foreach (TreeListDataItem Child in parentitem.ChildItems)
         {
              string ItemName = Child["UniqueName"].Text;
         }
      }
   }
}

Thanks,
Shinu

[Victor]

this is not working.

[Angel Petrov]

Hi Victor,

In order to traverse all the items in the RadTreeList you will need to use recursion as demonstrated in the code snippet below:

C#

protected void Unnamed_Click(object sender, EventArgs e)
    {
        foreach (TreeListDataItem treeListItem in RadTreeList2.Items)
        {
            TraverseAllItems(treeListItem);
        }
    }
    public void TraverseAllItems(TreeListDataItem treeListItem)
    {
        if (treeListItem.ChildItems.Count > 0)
        {
            foreach (TreeListDataItem childItem in treeListItem.ChildItems)
            {
                TraverseAllItems(childItem);
            }
        }
        return;
    }

Please note that when a TreeListDataItem is collapsed but has child records it's ChildItems.Count value will be equal to zero until it is expanded.

Regards,
Angel Petrov
Telerik