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Filter not woking after change datasource

When datasource load the first time, filtering is working. But after I change datasource depends on other component, it didn't work.

2 Replies

IL Indhumathy Loganathan Syncfusion Team November 8, 2022 09:48 AM

Hi Hieu,

Greetings from Syncfusion support.

The reported issue with filtering in the Dropdown Tree component may occur due to the component not being properly refreshed after a data update. To overcome the issue, you can follow the below steps to update the Dropdown Tree data and refresh the component to perform filtering.

//Update the Dropdown Tree data.

onClick() {

var newData = [

    { id: 16, name: 'MP3 Albums', hasChild: true },

    { id: 17, pid: 16, name: 'Rock' },

    { id: 18, pid: 16, name: 'Gospel' },

    { id: 19, pid: 16, name: 'Latin Music' },

    { id: 20, pid: 16, name: 'Jazz' },

    { id: 21, name: 'More in Music', hasChild: true },

    { id: 22, pid: 21, name: 'Music Trade-In' },

    { id: 23, pid: 21, name: 'Redeem a Gift Card' },

    { id: 24, pid: 21, name: 'Band T-Shirts' },

    { id: 25, name: 'Fiction Book Lists', hasChild: true },

    { id: 26, pid: 25, name: 'To Kill a Mockingbird' },

    { id: 27, pid: 25, name: 'Pride and Prejudice' },

    { id: 28, pid: 25, name: 'Harry Potter' },

    { id: 29, pid: 25, name: 'The Hobbit' },


this.ddTree.fields = {

    dataSource: newData,

    value: 'id',

    parentValue: 'pid',

    text: 'name',

    hasChildren: 'hasChild',




Sample: https://stackblitz.com/edit/angular-q6qvfo?file=app.component.html,app.component.ts


Indhumathy L

HI Hieu replied to Indhumathy Loganathan November 10, 2022 09:29 PM

Thank for your sample,

I try to follow your sample but when I use filtering don't choose any item in dropdown tree and after that I choose other item in dropdown list which dropdown tree datasource depends on, I got this error message.

Sorry for my bad english.

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