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130
Loading DataTree From Code Behind Issue
posted

Hello, I just recently started working with the webdatatree object for asp.net.  I have implemented the ultrawebtree before but never the webdatatree.  My page has the tree as a menu of items the user can click on and populate a frame to the right.  Currently the tree is being populated from a call to the database.  When I hit the database I bring back a text element and a value element to be placed in the nodes.  

My problem however, is that when I go to load the tree inside the page_load function, I call a class that returns a DataTreeNode object.  This object is the root node for my tree.  So I just add that main node to my DataTree.nodes collection.  So inside my class function, I am populating that root nodes, node collection.  

For example purposes here is a mock piece of code that shows whats happening and where my problem lies inside that class function.

public DataTreeNode getDashboardDataTreeNode()

    {        

        DataTreeNode root = new DataTreeNode();
        root.Text = "Main";
        root.Value = "root";

        for(int i=0; i<4; i++)

        {

            DataTreeNode innerNode = new DataTreeNode();

            innerNode.Text = "New";

            innerNode.Value = "val";

            root.Nodes.Add(tCat);

        }

}

 

When I call this function add that node to my DataTreeNode all that shows up is the "Main" node and one "New" node, where I wanted "Main" with four "New" nodes underneath.

I have done this same process with the Asp standard tree and the original UltraWebTree's TreeNode objects, both worked fine.

Any help on this matter would be greatly appreciated.

Thanks.

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  • 33839
    Verified Answer
    posted

    arithal ,

    I tried the code you provided.  I reproduced your issue.  We will investigate as to whether this is a bug or not.  But by changing the code slightly, I got your desired result.  You attempt to add the child nodes to the root object before adding to the data tree.  If I first add the root to the data tree and then add the children off of the tree, I get all four children.  Perhaps try doing that. 

                DataTreeNode root = new DataTreeNode();
                root.Text = "Main";
                root.Value = "root";
                this.WebDataTree3.Nodes.Add(root);
                for (int i = 0; i < 4; i++)
                {
                    DataTreeNode innerNode = new DataTreeNode();
                    innerNode.Text = "New";
                    innerNode.Value = "val";
                    this.WebDataTree3.Nodes[0].Nodes.Add(innerNode);
                }

     

    regards,
    David Young

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