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dthmlxTreeGrid expandAll()

 

How can I laod the tree grid with all its node expanded.

I tried calling  expandAll() function before rendering the tree grid on the page, but it does not seem to works. 

All the items/nodes are in collpase mode although I use  expandAll() whle laoding the tree grid.

 

 

The loading is async., so expand command need to be executed from after-loading callback

grid.load(url,function(){
     grid.expandAll();
});