Question

JavaScript => var error: string;
C# => string error;

Description 描述

Returns an error message if there was an error during the download (Read Only).

返回一个错误消息，在下载期间如果产生了一个错误的话。(只读)

If there was no error, error will return null or an empty string (this is because some platforms don't allow nulls for string values). We recommend that you use String.IsNullOrEmpty to check for the presence of an error so that both cases are covered.

如果没有错误，error将返回null或空字符串（这是因为某些平台不允许字符串为null值）。我们建议你使用String.IsNullOrEmpty来检查错误，因此就取代了那两种错误。

If the object has not finished downloading the data, it will block until the download has finished. Use isDone or yield to see if the data is available.

如果该对象没有完成下载完数据，将会堵塞直到完成下载。使用isDone或者yield查看下载的数据是否可以使用。