Treeview not working with Guid.ToString() as ID/ParentID

[James]

We have a simple Gantt chart, no dependencies, and are displaying tasks and subtasks.

My treelist of task/sub-tasks is not working correctly. I am using Guid.ToString() for this value. If a Summary designation is given, I get treelist arrows, but parent/child relationships are not being honored. Removing Summary for top-level tasks then removes any UI elements for treelists. I'm wondering If I am missing some required CSS files. I have been using all.less and gantt.less, and even tried throwing in treelist.less, but to no avail.

Any help and assistance is much appreciated. Let me know if you need further information.

[James]

I switched the IDs to int.ToString and still no treelist functionality. I checked the data being passed to the Gantt control and the ParentID correctly corresponds to a proper parent in the list.

[James]

Attached an image to show the problem. The ParentID of the TestCollections sub task is the ID for the Manage CUstomer Experience task, with an OrderId of 0. 

[James]

I was able to get the treelist working by setting my DataSource as follows:

.DataSource(d => d
            .ServerOperation(true)
            .Model(m =>
            {
                m.Id(f => f.Id);
                m.OrderId(f => f.OrderId);
                m.ParentId(f => f.ParentId);
            })
            .Read(read => read
                .Action("ReadTasks", "MyGanttController")
            )
        )

Will try using Guid.ToString() again as this is working for ints.

[James]

Got this working for ints as IDs when setting the DataSource on the Gantt as follows:

.DataSource(d => d
            .ServerOperation(true)
            .Model(m =>
            {
                m.Id(f => f.Id);
                m.OrderId(f => f.OrderId);
                m.ParentId(f => f.ParentId);
            })
            .Read(read => read
                .Action("ReadTasks", "Capabilities")
                .Data("GetFilterOptionValues")
            )
        )

 

Will try with Guid.ToString() next.

[James]

Does not work with Guid.

[Peter Milchev]

Hello James,

Setting the TaskId to be Guid should not be a problem. I should warn you that if you set the TaskId to be Guid, then the ParentId should be nullable Guid. Please find attached the controller, models and views I used to recreate your scenario. 

Regards,
Peter Milchev
Telerik by Progress

[James]

Thanks, Peter.

I did get it working after some trial and error this weekend, and it looks a lot like the solution you put forth. Thanks!