Before implementing this example create a new angular component with the name multiple.
Mat table select.
You can read more about selects in the material design spec.
Using only mat select is the single selection mode by default.
Mat select does not show the current selected option on page load if a mat option has some async behaviour in my case the translate pipe.
Do as the previous component to register this new component to the routing and main component.
When the ngmodel of a mat select is populated on page load the mat select should have that option selected.
What is the current behavior.
To use angular material select use mat select formcontrol for selecting a value from the set of options.
Angular material provides mat select form control for selecting a value from a set of options similar to the native select element.