Column reordering event cannot be canceled

[Radim]

Hi,

I'm trying to avoid dragging column in treelist to very first position, since it's kind of checkbox column and must be the first all the time. I wanted to handle columnReorder event (which i handle anyway) and cancel it, but this approach simply does not work. 

Something like

if (e.newIndex === 0)
            {e.preventDefault();}

Have you got any tips, what to try next, please?

 

Regards, Jaroslav

[Georgi Denchev]

Hello, Jaroslav,

Thank you for the provided details.

We have a Knowledge Base article which showcases how you can prevent a column from reordering in the Grid:

https://docs.telerik.com/kendo-ui/knowledge-base/grid-prevent-columns-reordering 

The same approach can be applied to the TreeList as well.

Dojo example:

https://dojo.telerik.com/@gdenchev/IbOfUTeg 

You can change the logic for the conditional statement to suit your case.

Best Regards,
Georgi Denchev
Progress Telerik

[Radim]

Hello, thank you very much. It works!

Jaroslav