Add the following else if condition to this method: //1 else if result is ORKFileResult { let fileResult = result as! ORKFileResult //2 retDict[“contentType”] = fileResult. A slightly more sophisticated example is the FileResult class. This class supplies a public property, the ContentType property that contains the. For example, to return a pdf file from the server the Content-Type should FileResult: FilePathResult, FileContentResult and FileStreamResult.

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Lets create a view model that wraps HttpPostedFileBase as a property which is decorated with data annotation attributes. Aggiungi e-mail alla ocntenttype. Uploading multiple files 5. Reading files from request 3.

If you’re working with Contenttpye. There are three built-in classes that implements FileResult: November 5, November 5, Controller helper methods to return files 9. OpenSubKey ext ; if regKey! The Content-Type header is the one that says the browser what kind of file is being returned from the server.

The reason is pretty much obvious: This is an abstract class derived from ActionResult that delegates writing the file in the response to the subclasses. Step 11 The file creates a filepathresult object using file name and content type. For example, in the case fileredult image we need the file should be one of the supported image types like jpg, jpeg, png by the server and we may also need validations to check the file size, file name etc.


We don’t need to worry about adding any headers in the response the action results will take care.

Behind the scenes 3. The main benefit of this technique is the simplicity: In this article we learnt many things about uploading and returning files in an MVC application.

Instead of manually reading the file from the Requestby taking the advantage of model binding the file can be made directly available as a parameter in the action as shown in the below listing. In the coming sections we will see how we can easily return filetesult file as response to the clients. And it will add an action result method to the controller.

Get a File Content-Type / MIME-type from file extension in ASP.NET C#

How a browser knows what file type is returned from the server? File action-results class diagram.

The model binding feature relies on two types of components binders and value providers. Step 8 Filepathresult initializes a new instance of the filepathresult class by using the specified file name and content type. The POSTed file s are available as parameters directly in actions through model binding. Creating custom file action result Like any other input data the POSTed files to the server also needs validation.

The important thing to note down is the file parameter name should be same as the name of the file input control in the above case it is photo. In the below listing we can see how to read the POSTed file from the request and save to the server. The files in the server can be easily sent as response to the clients through its rich support of action results.


Issue with the PDF file name generating using the FileResult | The Forums

But what we are interested contenttyype is to know the supporting classes. We discussed about the different types of file action results that helps to return files from the server and even we created a custom file action result that returns a file from string.

You can see the source code here. To return a file from server all we have to do is set the proper Content-TypeContent-Disposition headers and write the file into the response. Notify me of follow-up comments cotenttype email.

c# – mvc file contenttype – Stack Overflow

We can easily create new file action results by deriving from the the abstract class FileResult. There are many of them available throughout the web: MVC framework eases the job of returning files through its built-in action results. To understand how it generates the header see the source code. For example, let see how we can create a custom action result that return files from string, let’s call it FileStringResult.

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