Unable to get Id by routing in Angular 4

Question

Hello,

 

I didn't get student id in my ts file by routing, 

 

Student.html file contains :

<table>
  <tr><th>ID</th><th>Name</th><th>Age</th></tr>
  <tr *ngFor="let record of StudentList">
    <td><a [routerLink]="['/students',record.ID]">{{record.ID}}</a></td>
    <td>{{record.Name}}</td>
    <td>{{record.Age}}</td>
  </tr>
</table>

Student.component.ts file : 

this._activatedRoute.params.subscribe(params => {
        this.studentId = params['StudId'];
 });

Routing file contains  

{path:'students/:StudId',component:StudentComponent}