<form [formGroup]="myForm" (ngSubmit)="onSubmit()">
<ion-select
formControlName="favFruit"
label="Default label"
placeholder="Favorite Fruit"
helperText="Select your favorite fruit"
errorText="This field is required"
>
<ion-select-option value="apple">Apple</ion-select-option>
<ion-select-option value="banana">Banana</ion-select-option>
<ion-select-option value="orange">Orange</ion-select-option>
</ion-select>
<br />
<ion-button type="submit" size="small">Submit</ion-button>
</form>