private void FindAndSelectItem(int id)
{
//first check if the item is not already in the Items collection
foreach (var item in DebateList.Items)
{
if ((int)item.GetDataKeyValue("ID") == id)
{
item.Selected = true;
return;
}
}
//save the previously expanded indexes
var expandedIndexes = new TreeListHierarchyIndex[DebateList.ExpandedIndexes.Count];
DebateList.ExpandedIndexes.CopyTo(expandedIndexes);
//add newly expanded indexes here
var newIndexes = new List <TreeListHierarchyIndex>();
//cause all items to expand to reveal all data
DebateList.ExpandAllItems();
//loop through all the items and search for the target by its key value
foreach (var item in DebateList.Items)
{
if ((int)item.GetDataKeyValue("ID") == id)
{
//select the item
item.Selected = true;
//expand all parents of the item
var parent = item.ParentItem;
while (parent != null)
{
newIndexes.Add(parent.HierarchyIndex);
parent = parent.ParentItem;
}
}
}
//shrink back the treelist
DebateList.CollapseAllItems();
//restore the previously expanded indexes
DebateList.ExpandedIndexes.AddRange(expandedIndexes);
//add the newly expanded indexes that will reveal the selected item
foreach (var index in newIndexes)
{
if (!DebateList.ExpandedIndexes.Contains(index))
{
DebateList.ExpandedIndexes.Add(index);
}
}
//rebind to reflect the changes
DebateList.Rebind();
}
protected void expandLink_Click(Object sender, EventArgs e)
{
DebateList.ExpandAllItems();
}