生成的下载按钮单击文件 - 不破坏其它按钮 [英] Generate a file for download on button click - without breaking other buttons

问题描述

我想提供一个选项，下载报告（CSV格式），允许用户选择特定的日期范围。 （我也有以显示在GridView页面上的相同的信息的一个选项）。我可以通过使用Response.Clear（），设置的ContentType和内容处置，利用的Response.Write（）这样做就好了，然后到Response.End（），喜欢的这个博客，以及其他许多。

I'm trying to provide an option to download a report (in csv format), allowing the user to select a specific date range. (I also have an option to display the same information in a GridView on the page). I can do this just fine by using Response.Clear(), setting the ContentType and content-disposition, using Response.Write(), and then Response.End(), like this blog, and many others.

但是，这样做之后，按钮似乎已不再被回发到服务器。我可以更新我在GridView报告然而很多次我都喜欢，但只要我出口既不按钮将响应（即不再产生服务器端事件）。我怎样才能得到一个文件，并保存按钮respoding？这是一个SharePoint应用程序页面上，所以有东西在母版页事情一大堆。

However, after doing this, the buttons no longer seem to be posting back to the server. I can update my report in the GridView however many times I like, but as soon as I export neither button will respond (i.e. no further server side events are generated). How can I get a file and keep the buttons respoding? This is on a SharePoint application page, so there's a bunch of stuff going on in a Master page.

推荐答案

和我找到答案<一个href=\"http://stackoverflow.com/questions/7749393/no-more-post-back-after-file-download-in-sharepoint\">in这个问题

的SharePoint注册了一个名为_spFormOnSubmitCalled变量一旦它被设置为true，将prevent的回传。我已经添加了的OnClientClick到我的按钮，在短暂的延迟后，将其设置回为false，在斯特凡的答案。

SharePoint registers a variable called "_spFormOnSubmitCalled" which will prevent any postbacks once it is set to true. I've added an OnClientClick to my button to set it back to false after a short delay, as in Stefan's answer.

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