silverlight - Silverlight 是否每次都下载程序集？

Question

Silverlight 应用程序是在您每次访问该站点时都会下载，还是会检查版本/大小信息并仅下载较新版本的文件？

Answer 1

Silverlight 2 在这方面没有什么特别的，我读过的最简洁的解释来自 this post在 Silverlight.net 上:

"Silverlight falls under the same caching rules as any other web content. If the user clears their cache, your xap will have to be downloaded again. In normal circumstances, the xap is downloaded only when changed or when the cache expires."

您可以按照 steps outlined here 控制缓存何时到期。 :

You can turn the Enable Content Expiration HTTP header option on for your XAP file. Open IIS Manager, goto Default Web Site and find your Web site for the silverlight project. Find the XAP file under ClientBin. Goto the properties page of the XAP file, on HTTP Headers Tab, Turn on "Enable Content Expiration", click the "Expire Immediately" radio button. Save the change.

This way the new XAP (only there is a new XAP) will get downloaded when you refresh your page without having to close the browser.

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