Angular 5 - @ng-bootstarp - Load pop up in the page load.

I would like to discuss about the full workflow how we can load a modal pop up in page load in Angular 5 using @ng-bootstrap 4.0

First of all there are lots of hack and ways to implement this problem . But I followed method without using any third party library.

This post believe that users have the basic understanding about how to create angular project and make it up and running.