You are only adding root nodes and sub nodes which parent are root
node. In your method that adds your sub nodes (level 2 nodes)->you
must call recursively your method or some other method that adds your
sub node children.
For Example:
1) fetch root nodes (for example every node which ParentID==NULL) and
add them to the tree
2) call method that collects sub nodes
PopulateTreeView(null);
...
...
private void PopulateTreeView(int? parentId)
{
var filteredItems = masterList.Where(item => item.ParentID ==
parentId);
foreach (var i in filteredItems.ToList())
{
/*
Add sub node to the tree
.
.
I BELIEVE THAT THE FOLLOWING THING IS WHAT ARE MISSING:
and add sub node children also...
call itself PopulateTreeView(i.ID); or some other method
*/
}
On Mar 14, 6:03 pm, S <[email protected]> wrote:
> Hello all -- I am facing a weird problem with my object that I create
> at application start up. This object holds the data from the database
> which is referenced throughout the application.
>
> So the table contents following structure
>
> ID , ParentID , Name, Value
>
> First few values form the root of the structure. In my logic first I
> create the root nodes and then with another query I get all the values
> which are not the root and using the root values I create a list from
> the non-root nodes.
>
> For a specific root values deep in the tree I have 5 values but only 2
> are fetched from that list. I have tested in other parts of the code
> to see if only 2 values are returned for that node but it returns the
> correct number (just for the test and not used anywhere). This issue
> occurs only when I am actually building the tree. I fail to understand
> why only for a specific value it returns incorrect number of children.
>
> Any thoughts ?
>
> var getChildren = (from mL in masterList
> where mL.ParentID == parent.ID
> orderby mL.ID
> select new Category()
> {
> ID = mL.ID,
> Name = mL.Name,
> ParentID = mL.ParentID,
> Parent = parent,
> Level = parent.Level +
> 1 ,
> Value = mL.Value,
> ETFCount = mL.ETFCount
> }
> ).ToList();
>
> Above is the code that is used to create the tree (this is a part of
> recursive code in the function).
--
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