It is probably possible (at least it was) as I remember a bug where apps that converted from free to paid could not be updated by the end-user and that very same bug also existed with apps that have trial versions.
Edit: I'm pretty sure you can change from free to paid, but for the other way, your app needs certification again which means republishing it. MSDN especially states that special condition.
Yes, it's possible. With the one limit that users that have already "purchased" the application (for $0), won't be asked to pay for it when you change the price.
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这可能是可能的（至少是这样），因为我记得有一个错误，从免费转换为付费的应用程序无法由最终用户更新，并且具有试用版的应用程序也存在同样的错误。
编辑：我很确定您可以从免费更改为付费，但对于另一种方式，您的应用程序需要再次认证，这意味着重新发布它。 MSDN 特别声明了这种特殊情况。
It is probably possible (at least it was) as I remember a bug where apps that converted from free to paid could not be updated by the end-user and that very same bug also existed with apps that have trial versions.
Edit: I'm pretty sure you can change from free to paid, but for the other way, your app needs certification again which means republishing it. MSDN especially states that special condition.
是的，这是可能的。有一项限制是，当您更改价格时，已经“购买”该应用程序（0 美元）的用户不会被要求支付费用。
即使他们重新安装该应用程序也不会。
Yes, it's possible. With the one limit that users that have already "purchased" the application (for $0), won't be asked to pay for it when you change the price.
Not even if they re-install the app.