Setting state in nodeSelected event causes selected node to get deselected

[Niloofar]

when i set state in nodeSelected event, it makes selected node deselect, as if it intervene the event.

My concstructor:

constructor(props) {

      super(props);

     this.onNodeSelected = this.onNodeSelected.bind(this);

}

My render looks like:

         

    <TreeViewComponent

                        id='categoryTreeView'

                        loadOnDemand={false}

                        fullRowSelect={false}

                        fields={{

                            dataSource,

                            id: 'mediaFolderId',

                            text: 'Name',

                            parentID: 'parentFolderId',

                            hasChildren: 'hasChild'

                                  }}

                        className='syncfusion-tree-view'

                      nodeSelected={ this.onNodeSelected }

                        ref={element => this.treeViewElement = element}

                    />

updating state:

    onNodeSelected = () => {

          this.setState({ viewAllButton: true});

    }

could you please let me know what i'm doing wrong. I even tried redux action to update state, but i get the same result

[Keerthana Rajendran]

Hi Niloofar, 

  

Thanks for contacting Syncfusion support. 

  

We have checked your reported problem in TreeView component with your shared code. You have assigned fields settings inside the render method and because of this the component was re-rendered every time we make a change using setState method. To resolve this issue, give the fields settings outside of the render method. We have prepared sample for your convenience. kindly refer to the below link for the sample. 

  

Sample link: https://stackblitz.com/edit/tree-nodeselected 

  

  

Please let us know if you have any concerns. 

  

  

Regards, 

Keerthana.  

[Niloofar]

That fixed my problem, thank you.

[Keerthana Rajendran]

Hi Niloofar,  

 

Most welcome. We are glad to hear that the provided solution helped you to achieve your requirement. Please get back to us if you need any further assistance on this. 

 

Regards, 

Keerthana.