问题使用ASP.NET FileUpload控件在一个UpdatePanel？ [英] Problem using the ASP.NET FileUpload control in an UpdatePanel?

问题描述

我运行到一个问题，我有一个UpdatePanel一个FileUpload控件。当我尝试保存更改并上传的文件，没有文件被发现。如果我删除的UpdatePanel一切似乎很好地工作。

I'm running into an issue where I have a FileUpload control in an UpdatePanel. When I attempt to save changes and upload the file, no file is found. If I remove the UpdatePanel everything seems to work fine.

任何想法，为什么这可能发生？而且有一个变通？

Any ideas why this might be happening? And is there a work-around?

推荐答案

要上传您需要执行一个完整的ASP.NET网页提交的文件，它不会工作在部分回发的方法。

To upload a file you need to perform a full ASP.NET page postback, it does not operate over the partial postback method.

您需要注册按钮，上传你的文件在UpdatePanel的触发器的PostBackTrigger。

You'll need to register the button which "uploads" your file as a PostBackTrigger of the UpdatePanel's triggers.

有很多免费的（和non-free）AJAX文件上传解决方案，也可以很容易地创建一个，它是把你的文件上传控件的iframe内提交的iframe页面返回给服务器的只是一个问题。它不是的真正的阿贾克斯，但它给AJAX的可视化即时通讯pression。

There are lots of free (and non-free) AJAX file upload solutions, or you can easily create one, it's just a matter of putting your file upload control within an iframe and submitting the iframe page back to the server. It isn't really ajax, but it gives a visual impression of AJAX.

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