How to toggle Angular material expansion panel programmatically

Question

I just started working on an Angular 4 project with material design.

I am currently working with the expansion component, the API states that a disabled expansion pa

Answer 1

Another very simple way to handle Mat Expansion panel programmatically is by using local references in Angular

Now in HTML(not accessible directly in TS file until we use @ViewChild) file use mep to expand or collapse Expansion panel using something like this:

Expand
Collapse