I've created a new project that just shows the error. Now it works without an error but you can't click on the tree. The project connects to a database. Do you want me to zip the project anyways? Where do I send it?

Hey Jadem,

Just attach your zip to your post.

Thanks!

I found out the issue only happens when I use theTreeModel.

Here is how it is setup when it doesn't work -

Here is my Model:

    public class TreeModels
    {
        public TreeModel Tree1 { get; set; }
    } 

Here is my Controller:

            var db = new MotherShipEntities();
            var col1 = db.States.Where("it.Name LIKE '[A-K]%'");

            TreeBindings tbStates = new TreeBindings();
            tbStates.TextKey = "Name";
            tbStates.PrimaryKey = "StateId";
            tbStates.ValueKey = "StateId";
            tbStates.ChildDataProperty = "Cities";
            TreeBindings tbCities = new TreeBindings();
            tbCities.TextKey = "Name";
            tbCities.PrimaryKey = "CityId";
            tbCities.ValueKey = "CityId";
            tbStates.Bindings = tbCities;
 
            // ========================
            TreeModel treeModel1 = new TreeModel();
            treeModel1.ID = "TreeInController1";
            // Configure data source
            treeModel1.DataSource = col1;

            // Configure specific display and interraction properties
            treeModel1.LoadOnDemand = true;
            treeModel1.DataSourceUrl = Url.Action("TreeGetData");
            treeModel1.CheckboxMode = CheckboxMode.TriState;
            treeModel1.SingleBranchExpand = true;
            treeModel1.ParentNodeImageUrl = "Computer.png";
            treeModel1.LeafNodeImageUrl = "Computer.png";

            // Define bindings
             treeModel1.Bindings = new TreeBindings();
            treeModel1.Bindings.TextKey = "Name";
            treeModel1.Bindings.PrimaryKey = "StateId";
            treeModel1.Bindings.ValueKey = "StateId";
            //treeModel1.Bindings.ImageUrlKey = "ImageUrl";
            treeModel1.Bindings.ChildDataProperty = "Cities";
            treeModel1.Bindings = tbStates;
            // ========================

            var model = new TreeModels()
            {
                Tree1 = treeModel1,
            };

            return View("Index", model);'

and here is my cshtml:

@(Html.Infragistics().Tree(this.Model.Tree1 as TreeModel))

To make it work this is my controller:

            var db = new MotherShipEntities();
            var col1 = db.States.Where("it.Name LIKE '[A-K]%'");

            return View(col1);

and this is my cshtml:

                @(Html.
                Infragistics().
                Tree().
                    Bindings( bindings => {
                    bindings.
                    TextKey("Name").
                    PrimaryKey("StateId").
                    ValueKey("StateId").
                    ChildDataProperty("Cities").
                    Bindings(b1 =>
                    {
                        b1.
                        TextKey("Name")
                        .ValueKey("CityId")
                        .PrimaryKey("CityId");
                    });
                }).
                DataSourceUrl(Url.Action("TreeGetData")).
                LoadOnDemand(true).
                DataSource(Model).
                DataBind().
                Render()
                )

When I do it that way (using the MVC helper) it works. I can click on the tree and it will expand or check.

Here is how I call the dialog in both examples:

        $('#select-states-button').click(function() {
            $('#test-dialog').dialog();
        });

        Here is my load on demand callback: used in both examples

        public JsonResult TreeGetData(string path, string binding, int depth)
        {
            var ctx = new MotherShipEntities();
            TreeModel model = new TreeModel();
            switch (depth)
            {
                case 0:
                    model.DataSource = ctx.States;
                    break;
                case 1:
                    model.DataSource = ctx.Cities;
                    break;
                default:
                    model.DataSource = ctx.States;
                    break;
            }
            return model.GetData(path, binding);
        }

Hello there,

I was just wondering whether you got your issue resolved?

Thank you for using the Infragistics forums!