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.
| Author: | Mikajind Neshakar |
| Country: | Maldives |
| Language: | English (Spanish) |
| Genre: | Travel |
| Published (Last): | 19 October 2010 |
| Pages: | 270 |
| PDF File Size: | 13.79 Mb |
| ePub File Size: | 14.18 Mb |
| ISBN: | 543-8-93960-915-7 |
| Downloads: | 99853 |
| Price: | Free* [*Free Regsitration Required] |
| Uploader: | Nakinos |
Step 5 Name the view and select “Empty without model ” as the template. Step 6 Add a title to the index page.
Note that the validation fileresklt applied over the File property are custom ones and contenthype exists in the data annotations assembly. Aggiungi e-mail alla newsletter.
In the coming sections we will see how we can easily return a file as response to the clients. Controller helper methods to return files 9. I used to have mine too, until I found this great GitHub project that covers a gigantic amount of them: The FileStreamResult reads chunks of data from the stream and write into the response. Creating custom file action result The POSTed file s are available as parameters directly in actions through model binding.
Web namespace — System. In the below listing we can see how to read the POSTed file from the request and save to the server. This site uses Akismet to reduce spam. The model binding feature relies on two types of components binders and value providers. For example, let see how we can create a custom action result that return files from string, let’s call it FileStringResult.
How to upload a file? Step 3 Name the controller as in the following:. So create another action method and return the file.
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.
Issue with the PDF file name generating using the FileResult | The Forums
You can see the complete code of FilePathResult here. TryGetValue extensionout mime?
GetAssembly typeof HttpApplication. The binders are the components that really fills the properties of a model or the parameters in the action with those values. Generic ; using System. How a browser knows what file type is returned from the server? This class mainly does the job of adding Content-Type and Content-Disposition headers into the response. Step 4 Now we need to create a view. You may think why no value providers are used in this case, it’s because the source is single and clear i.
Step 13 Run the project, click on “Return File” and the text file will be opened in the browser.
Uploading and returning files in MVC
Reading ckntenttype from request 3. If you forget setting the proper encoding type then only the filename is submitted not the file.
The below listing shows the simplified version of the upload action after using view model. Returning files through action results 7. MVC fieresult eases the job of returning files through its built-in action results.
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. Your email address will not be published.
Instead of manually reading the file from the Requestby taking the advantage of model contemttype the file can be made directly available as a parameter in the action as shown in the below listing. The main contenttyp of this technique is the simplicity: We can use our FileStringResult as shown in the below action.
The below code snippet shows how we can return a file just plain from an action without using action results.
We saw how we can apply validations to the POSTed files easily using view models. Using view models to validate POSTed files 5. Contenthype to return a file as response?
Get a File Content-Type / MIME-type from file extension in ASP.NET C#
This class contains a single abstract method called WriteFile that every subclass should implement. The reason is pretty much obvious: Step 12 Create a link to call the downloadTextFile method of the home controller. You can find the contenttyle in the download folder. Learn how your comment data is processed. Like any other input data the POSTed files to the server also needs validation.
Akshay Patel Aug 25