start-lock-input.component.html

<form [formGroup]="startkeyform" fxLayout="column">
  <h1 mat-dialog-title>{{ data.title }}</h1>

  <mat-dialog-content>
    <p>{{ data.prompt }}</p>
    <mat-form-field *ngFor="let c of data.codes" fxLayout="column">
      <p>{{ c.prompt }}</p>
      <input matInput [formControlName]="c.testletId" [(ngModel)]="c.value" (keyup.enter)="close()">
    </mat-form-field>
  </mat-dialog-content>

  <mat-dialog-actions>
    <button mat-raised-button #okButton color="primary"
        [disabled]="startkeyform.invalid"
        type="submit" [mat-dialog-close]="data.codes">Weiter</button>
    <button mat-raised-button [mat-dialog-close]="false">Abbrechen</button>
  </mat-dialog-actions>
</form>