Unfortunately, in our project it did not work as expected in all scenarios. This post, will explain what was the error, a possible reason for it and how we solved it. First, we will show the code for the interceptor we borrowed from the post mentioned above, with some slight modifications. The interceptor runs when a document metadata media file is trying to be downloaded, this includes pdf, xlsx, xls, csv and zip extensions.
The code for the document metadata type is below. The error appeared when the user tried to download some xls files, several of them were downloaded successfully, but some of them were download without file extension and corrupted. Debugging the code we identified that the line using DownloadMediaRouter. DownloadSegment was causing the issue.
The method sometimes was not returning the file name successfully and as consequence the content disposition header was not set with a valid value. Therefore, it seems like that API is not safe to use, so we decided to implement our own code to solve the issue. Our implementation use a method to read the extension from the binary data and it joins the extension with the file name so we can use it to set the content disposition value.
When downloading a file from an ASP. Then you just need to remove the precondition attribute. Otherwise, your module won't be called for static files and anything else that might not invoke the managed pipeline. Stack Overflow for Teams — Collaborate and share knowledge with a private group. Create a free Team What is Teams? Collectives on Stack Overflow. Learn more. Intercept a file download in C using either an http module or http handler? Ask Question. Asked 4 years, 11 months ago.
Active 4 years, 11 months ago. Viewed times. Textpattern indeed raises a callback there, but if the callback completes, the download is served — irrespective of the return code. You therefore have two main avenues open to you. Option one is to exit inside your plugin. Say, Having the ability for people to manipulate the file download flow in a less hacky manner could be of immense benefit. The smd plugin menagerie — for when you need one more gribble of power from Textpattern.
Bleeding-edge code available on GitHub. Txp Builders — finely-crafted code, design and Txp. If I remove the iframe fallback, nothing shows up at all. The link is to an HP A3 printer configuration site. If I open the site with any browser I can configure a printer and then click on a button that causes a click to go to a Javascript function that builds the Excel spreadsheet and sends it to the browser's download manager, which sends it back to my IE or Chrome chosen download folder.
If I open the link in a. Net WebBrowser control which does not have its own download manager the link opens correctly, configures correctly and when the download button is clicked may i do not know since I have no way of checking actually send a response somewhere. I need to intercept that response and save the downloaded spreadsheet. If I were to do this in Winforms, the WebBrowser control has its own download manager and c code can interact with it.
Unfortunately the application of the WebBrowser is a. Net web site, and the. Net WebBrowser has no download manager, it just calls some version of IE through interop. I am told by some comments in various search results that I will need to write my own download manager and add it to the WebBrowser services, but I have no clue of how one does this.
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