Joseph Brasch
Joseph Brasch
I had the same issue with the Seeed shield, this ended up working for me: https://github.com/Seeed-Studio/Seeed_Arduino_CAN/tree/master/examples/canbus-monitor
mat-select - need Check All & Uncheck All options (Select All & Deselect All) for multiple selection
Another option is to put a mat-checkbox inside of your mat-select and use the indeterminate and checked properties. It might look something like this and live inside of your mat-select....