tree view

I have two folders with class and section…while drag and drop the class to the section,it shouldnt be added while the reverse should work out in the tree view…could u specify the dhx function with explanation

Sorry, not absolutely understood, that did you want. But if you need to block DND for separate cases - use events: onDrag and onDrop. Each of them has features and settings. Here is the description of events in documentation: docs.dhtmlx.com/doku.php?id=dhtm … s_handling
Here are examples: dhtmlx.com/docs/products/dht … ag_n_drop/

I am also suffering the same issue but after reading the resource link i am near to finish … thanks

You are welcome!