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

However, there is a major caveat: Returning files through action results 7. When we use the HttpPostedFileBase directly as action parameter then we have to validate the file manually as shown in the below listing. This class contains a single abstract method called WriteFile that every subclass should implement.

So why cojtenttype article? This site uses Akismet to reduce spam. This is an abstract class derived from ActionResult that delegates writing the file in the response to the subclasses. The below flieresult shows the simplified version of the upload action after using view model. You can find the file in the download folder.

If you’re working with ASP. This class mainly does the job of adding Content-Type and Content-Disposition headers into the response. AsyncUtil — C Helper class to run async methods as sync and vice-versa A useful helper class written in C Sharp to help developers working with async and sync methods in ASP.


The binders are the components that really fills the properties of contrnttype model or the parameters in the action with those values. So far we have seen how to upload files to conetnttype and validate them using data annotations. 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. Generic ; using System. MVC framework eases the job of returning files through its built-in action results.

Step 11 The file creates a filepathresult object using file name and content type.

OpenSubKey ext ; if regKey! How a browser knows what file type is returned from the server?

How to Deploy a ASP. How about reading multiple files POSTed to the server? TryGetValue extension, out mime? In the coming sections we will see how we can easily return congenttype file as response to the clients. The Content-Type header is the one that says the browser what kind of file is being returned from the server. Reading files from request 3. GetAssembly typeof HttpApplication. Using view models to validate POSTed files 5. The below code snippet shows how we can return a file just plain from an action without using action results.

  IEC 60747-9 PDF

In the above action we have done couple of validations against the uploaded file.

We can use our FileStringResult as shown in the below action. Leave a Reply Cancel reply Your email address will not be published.

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

Note that the validation attributes applied over the File property are custom ones and not exists in the data annotations assembly. The size of each chunk is 4KB and this can’t be changed through code or filerseult.

If you forget setting the proper encoding type then only the filename is submitted not the file. 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. In the below listing we can see how to read the POSTed file from the request and save to the server.