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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November 10, November 10, Behind the scenes 3. In this article we learnt many things about uploading and returning files in an MVC application. Notify me of new posts by email. The reason is pretty much obvious: We can even pass a file download name to the FilePathResult. Generic ; using System. File contwnttype class diagram.

Visual Studio New Features. When we use the HttpPostedFileBase directly as action parameter then we have to validate the file manually as shown in the below listing.

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

TryGetValue extensionout mime? So far we have seen how to upload files to server and validate them using data annotations. November 14, November 14, Web namespace — System. The MVC framework is designed in such a way that these two components are loosely coupled and hence a binder don’t need to worry about which value provider it has to interact to get the value for a property or parameter likewise a value provider don’t need to conrenttype about who is asking the value.


OpenSubKey ext ; if regKey!

Click fileresulh the “Add” button. Right-click on “Index” and select “Add View Note that the validation attributes applied over the File property are custom ones and not exists in the data annotations assembly.

Fileredult model binding feature relies on two types of components binders and value providers. This is undoubtely a major issue that might leads some to prefer the following method instead. Request a new Category View All.

When you have a single instance of HttpPostedFileBase as an action parameter or a property in model then mapping the file is completely done by the HttpPostedFileBaseModelBinder and no value providers are used in this case.

If you forget setting the proper encoding type then only the filename is submitted not filedesult file. Like any other input data the POSTed files to the server also needs validation.

Creating custom file action result Actually you don’t need to instantiate the FileResult types from action methods the Controller has bunch of built-in methods that helps to easily send a file in response. If it fails then generate the header value based on RFC from its own methods. 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 may think why no value providers are used in this case, it’s because the source is single and clear i.

File Result in Controller Sample in MVC: Day 15

So create another action method and fontenttype the file. The POSTed file s are available as parameters directly in actions through model binding. Step 12 Create a link to call the downloadTextFile method of the home controller.

Akshay Patel Aug 25 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.

You can find the file in the download folder. November 5, November 5, When the user want to save the file sent to the browser, the server can suggest a filename to the client and the Content-Disposition header is just for that.

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

The below listing shows the simplified version of the upload action after using view model. TryGetValue mimeTypeout extension. POSTing a file to the server is quite simple.