Dynamically add RadPanelBar items that contain dynamic radtreeview

[steven]

So far I have been able to successfully dynamically load a radtreeview inside a radpanelbar. There are just 2 issues i'm facing now and hopefully someone could help me out. 

Issue 1.

After a post back (control added to an ajaxmanager) generated from a radpanel item selected event, my radtreeview disappears.

Issue 2.

RadTreeView node click event does not fire.

I will paste brief segments of my code below. 

ParentChildItems = function that returns a List<Child> object full of children...

foreach (Child child in ParentChildItems)

                    {

                        RadTreeView treeView = new RadTreeView();

                        RadPanelItem item = new RadPanelItem(child.Display);

                        RadPanelItem itemFolder = new RadPanelItem();

                        item.Value = child.ChildID;

 

                        List<Object> folders = new Child(General.DB).findAllFoldersByDrawer(child.ChildID);

 

                        if (folders.Count > 1)

                        {

                            treeView.ID = child.ChildID + "_tView";

                            treeView.NodeClick += new RadTreeViewEventHandler(treeView_NodeClick);

                            treeView.CheckChildNodes = true;

 

                            RadTreeNodeBinding binding = new RadTreeNodeBinding();

                            binding.Expanded = true;

                            treeView.DataBindings.Add(binding);

                            treeView.DataTextField = "Display";

                            treeView.DataFieldID = "ChildID";

                            treeView.DataValueField = "ChildID";

                            treeView.DataFieldParentID = "ChildChildID";

                            treeView.DataSource = folders;

                            treeView.ShowLineImages = true;

                            treeView.DataBind();

 

                            itemFolder.Controls.Add(treeView);

                            item.Items.Add(itemFolder);

                        }

 

                        pnlDrawers.Items.Add(item);

 

                        if (folders.Count > 1)

                        {

                            AjaxManager.AjaxSettings.AddAjaxSetting(AjaxManager, treeView, RadAjaxLoadingPanel1, UpdatePanelRenderMode.Inline);

                            AjaxManager.AjaxSettings.AddAjaxSetting(pnlDrawers, treeView, RadAjaxLoadingPanel1, UpdatePanelRenderMode.Inline);

                            AjaxManager.AjaxSettings.AddAjaxSetting(treeView, treeView, RadAjaxLoadingPanel1, UpdatePanelRenderMode.Inline);

                        }

                    }

public class Child
    {
        #region properties
        public string ChildID { get; set; }
        public string ParentID { get; set; }
        public string ChildChildID { get; set; }
        public string Label { get; set; }
        public string FirstName { get; set; }
        public string MName { get; set; }
        public string Lastname { get; set; }
}

[Ivan Danchev]

Hello,

We recommend using templates when adding RadTreeView or other controls to a RadPanelBar, adding it directly to an item might result in unwanted behavior. Templates are a functionality designed specifically for that purpose - embedding controls in a RadPanel item.
You can find more information on how you can use templates with RadPanelBar in our documentation and we also have a live demo:

•  Templates Overview article
• RadPanelBar Templates demo

I am also attaching a sample project showing how to add dynamically TreeView nodes to a template. Clicking on a node changes its text.

Regards,
Ivan Danchev
Telerik