*ngFor how to bind each item in array to ngModel using index

Question

===final updated==

http://plnkr.co/edit/WKRBB7?p=preview

since I use ngModel in a form, I must add name attribue.

and my mistake is that

Answer 1

It should be [ngModel]="..."

   

     
{{ i+ 1 }}
     
{{x.Name}}