Angular – Submit a form programmatically

You can use ngNoForm with your form to remove ngForm handling and to add plain javascript handler.

you can use your code as follows:

Html file.

<form ngNoForm
  [formGroup]="testGroup"
  [action]='actionLink'
  method='POST'
  #testForm>
    <input name="Email" type="hidden" [value]='currentUserEmail'>
</form>

Ts File.

@ViewChild('testForm') testFormElement;

public currentUserEmail: string = '';
public testGroup = this.formBuilder.group({
  Email: ''
});

constructor(formBuilder: FormBuilder) {
}    

public testMethod(): void {
  this.testFormElement.nativeElement.submit();
}