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                                            Taha Mosaad

Error: WebGL program error

![image](https://user-images.githubusercontent.com/7504036/79278121-65c2e400-7eab-11ea-81a7-d5543e35f580.png) ![image](https://user-images.githubusercontent.com/7504036/79278214-9145ce80-7eab-11ea-8d07-52046ba41a85.png) ![image](https://user-images.githubusercontent.com/7504036/79278326-c4885d80-7eab-11ea-9e61-e29eb4d4cf04.png)

Select parent value only, without getting Children values

solve it using this methods ``` private OnSelectChange(checkedItem:any){ this.selecteditem=[]; this.getcheckeditem(this.items) console.log(this.selecteditem) } private getcheckeditem(itemarray: TreeviewItem[]) { itemarray.forEach(e => { if (e.checked) { this.selecteditem.push(e);} if (e.children && e.children.length > 0) {...