// Find 'DataRowView' in _TreeNode collection
private _TreeNode FindParent(List <_TreeNode> nodes, _TreeNode node)
{
foreach (_TreeNode tn in nodes)
{
if (tn.Id.Equals(node.IdParent))
{
return(tn);
}
// Find in child nodes
_TreeNode fc = FindParent(tn.Child, node);
if (fc != null)
{
return(fc);
}
}
return(null);
}
private void SetupRows()
{
CancelEventArgs cea = new CancelEventArgs();
if (SetupingRows != null)
{
SetupingRows(this, cea);
if (cea.Cancel)
{
return;
}
}
this.Rows.Clear();
_nodes.Clear();
_topNodes.Clear();
foreach (DataRowView drv in _bs.List)
{
object id = drv.Row[_key];
object idParent = drv.Row[_parentKey];
_TreeNode tn = new _TreeNode(drv, id, idParent);
_nodes.Add(tn);
}
foreach (_TreeNode tn in _nodes)
{
_TreeNode parentTn = FindParent(_nodes, tn);
if (parentTn == null)
{
_topNodes.Add(tn);
}
}
foreach (_TreeNode tn in _topNodes)
{
_nodes.Remove(tn);
}
bool cont = true;
while (cont)
{
cont = false;
foreach (_TreeNode tn in _nodes)
{
if (tn.Parent == null)
{
_TreeNode parentTn = FindParent(_topNodes, tn);
if (parentTn == null)
{
cont = true;
}
else
{
parentTn.Child.Add(tn);
tn.Parent = parentTn;
}
}
}
}
InsertDataGridRows(_topNodes, null);
if (SetupedRows != null)
{
SetupedRows(this, new EventArgs());
}
}