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Ticket T221422
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dxTreeView clearSelection

created 10 years ago

I am trying to deselect items in a dxTreeView when a button is clicked.

Because dxTreeView doesn't have a clearSelection() method like dxDataGrid , i tried to use option() method to set a empty array to the selectedItems configuration like this "option('selectedItems', []) " and then to use the repaint() method.

I receive the following error when call the repaint() method:
Uncaught Error: E0009 - Component 'dxCheckBox' has not been initialized for an element. See:
http://js.devexpress.com/error/14_2/E0009

What other alternative i have to clear the selection of the dxTreeView ?

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Answers approved by DevExpress Support

created 10 years ago (modified 10 years ago)

Hello Daniel,

The selectedItems option is deprecated. dxTreeView provides the selectItem and unselectItem methods to programmatically change the item selection. These methods accept a DOM element corresponding to a tree view item or data item as parameter. Below is an example of the function that deselects all items in the tree view. A complete example is attached to this message.

JavaScript
function clearSelection() {  
    treeView.beginUpdate();  
    $.each(treeView.option('items'), function() {  
        treeView.unselectItem(this);  
    });  
    treeView.endUpdate();  
}
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