primeng对话框在角度8中不起作用

Question

<p-dialog header="Godfather I" [(visible)]="display" [modal]="true" [responsive]="true" [style]="{width: '350px', minWidth: '200px'}" [minY]="70"[maximizable]="true" [baseZIndex]="10000">
    <p>hi</p>
        <p-footer>
            <button type="button" pButton icon="pi pi-check" (click)="display=false" label="Yes"></button>
            <button type="button" pButton icon="pi pi-close" (click)="display=false" label="No" class="ui-button-secondary"></button>
        </p-footer>
</p-dialog>

<button type="button" (click)="showDialog()" pButton icon="pi pi-info-circle" label="Show"></button> 


 export class DialogDemo {

    display: boolean = false;

    showDialog() {
        this.display = true;
    }
}

我使用此代码创建对话框，但无法正常工作。我正在尝试在对话框中创建一个表单。