A small class to retrieve the MIME Type of any file and/or extension in C# using Windows Registry or a static MIME Type Map for I have even tried FilePathResult and FileStreamResult nothing works public FileResult “must-revalidate”); return File(path, contentType); }. Я заменил столбец FileExtension в моей таблице базы данных столбцом ContentType. Я заполняю его, когда я загружаю файл. Private Sub.
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You can see the source code here. This is just a starting point.
FileStreamResult , FilePathResult File for action MVC not working for image | The Forums
MVC framework eases the job of returning files through its built-in action results. You might, of course, want to keep the mimeTypes alive for future queries.
Get a File Content-Type / MIME-type from file extension in ASP.NET C#
Uploading multiple files 5. How a browser knows what file type is returned from the server?
Returning files contsnttype action results 7. If you’re working with ASP. StriplingWarrior, or keep a single static dictionary. Net 10 is a little nicer Adding the Content-Type header is not a big deal while determining the value of the Content-Disposition header is not an easy job and the FileResult class uses a private class ContentDispositionUtil for that purpose.
The files in the server can be easily sent as response to the clients through its rich support of action results. So why another article?
content-type – Как определить тип содержимого файла в .NET? – Qaru
Notify me of new posts by email. For the content-types the browser can’t display to the user it opens the save dialog ex. Finally we have to replace the action parameter from HttpPostedFileBase to UploadFileModel and the validations will happen automatically when fjlestreamresult binding happens. If you forget setting the proper encoding type then only the filename is submitted not the file.
There is filestreamredult page. So uploading a single file and reading it from the server is quite easy, all we need is to set the HttpPostedFileBase type as a parameter in the corresponding action method. Show “Cannot read file from disk. Note that the validation attributes applied over the File property are custom ones and not exists in the data annotations assembly. ContainsKey Temp 0 Then data. Email Required, but never shown. In the below listing we can see how to read the Contentty;e file from the request and save to the server.
Dim regKey As Microsoft.
The compiler is smart enough to implement a switch statement using a dictionary, or some other structure depending on how it thinks it will get better performance. Still, I’d choose a dictionary, because it will provide me with a little more flexibility than a switch statement, and I can fill it with contnettype data, maybe coming from a configuration or database. Instead of doing it manually it would be great if you could do that using data annotation attributes and for that we have to use view models.
Well, in this article I gathered the important concepts that are scattered in different posts, threads in a single place. POSTing a file to the server is quite simple.
If it fails then generate the header value based on RFC from its own methods. The below code snippet shows how we can return a file just plain from an action without using action results. November 10, November 10, This site fklestreamresult Akismet to reduce spam. This is an abstract class derived from ActionResult that delegates writing the file in the response to the subclasses.