Mvc web file download

The below code snippet shows how we can return a file just plain from an action without using action results. Returning files through action results MVC framework eases the job of returning files through its built-in action results. We don't need to worry about adding any headers in the response the action results will take care. The size of each chunk is 4KB and this can't be changed through code or config. View All. Ketak Bhalsing Updated date May 03, Next Recommended Reading.

Windows 10 Vs Windows Visual Studio Vs Visual Studio Getting Started With. NET 6. C Evolution. Member NotSupportedException: ' The given path' s format is not supported.

User However on a positive note, I've got a new idea about my next article called "How to write text to the console" with the following code: C Copy Code Console. WriteLine " Your text" ; How do you know so much about swallows? Can you explain how your mentioned link is related to what I have posted. The reason behind posting this short tip is to help those beginners, who are not much familiar with MSDN and needs a quick solution.

We should be building great things that don't exist- Lary Page. Your "tip" is just standard MVC functionality. Open , " contentType" , " filename. Pretty good. Thanks for clearing my concepts. Further Why don't you convert your this comment in a short tip to help users rather arguing here? It will be more helpful to codeproject users. Because it's not a tip, it's duplicate information of what's already in MSDN..

A single line showing people that you've returned a simple ActionResult is not a tip, it's simply a way to try and boost your reputation. You can try this one next.. I'd suggest you take a look. Regarding code Tridip Bhattacharjee Sep Tridip Bhattacharjee. Reading the file into memory John Brett Sep Ask Question. Asked 11 years, 2 months ago. Active 1 year, 7 months ago. Viewed k times. Anyone know the "correct" way of doing such a download in MVC?

Read data, 0, data. Length ; if br! Length throw new System. Improve this question. Community Bot 1 1 1 silver badge. Anders Anders What you're doing is rather dangerous. You're pretty much allowing users to download any file from your server that the executing user can access. True - removing the file path, and nailing it down in the body of the actionresult would be somewhat safer.

At least that way they only have access to a certain folder. Are there any tools that allow you to find potentially dangerous loopholes such as this one? I find that it's convenient to set content-type as Response. GetMimeMapping filePath ; , from stackoverflow. What are you using on client side? Add a comment. Active Oldest Votes. Improve this answer. Tieson T. Ian Henry Ian Henry Ok, I could try that, but what goes into the byte[] array? Never mind, I think I figured it out.

I read the filename full path into a FileStream and then into a byte array, and then it worked like a charm! This loads the entire file into memory just to stream it out; for big files, this is a hog. A much better solution is the one below that doesn't have to load the file into memory first. As this answer is almost five years old, yeah. If you're doing this to serve very large files, don't.

If possible, use a separate static file server so you don't tie up your application threads, or one of many new techniques for serving files added to MVC since ReadAllBytes was added years later in an edit. Why is this my second most upvoted answer? Oh well. Getting this error: non-invocable member "File" cannot be used like a method.

Show 10 more comments. For example using a virtual path to the file you could do the following.