How do I return FileStreamResult?

FileStreamResult Sends binary content to the response by using a Stream instance when we want to return the file as a FileStream.

public FileStreamResult CreateFile()
{
var stream = new MemoryStream(Encoding.ASCII.GetBytes(“Hello World”));
return new FileStreamResult(stream, new MediaTypeHeaderValue(“text/plain”))
{

How do I return a web API file?

How to Return Files From Web API

Prerequisite.
Convert Required file into Bytes.
Adding bytes to MemoryStream.
Adding MemoryStream object to the HttpResponseMessage Content.
We need to talk about the ContentType here.
Result.

How do I return a CSV file to REST API core?

Solution: Use FileResult csv”; byte[] fileBytes = ; return File(fileBytes, “text/csv”, fileName); // this is the key! } The above will also work if you use public async Task if you prefer using that instead. The key is that you return a File type.

What is ActionResult return type in MVC?

An ActionResult is a return type of a controller method in MVC. Action methods help us to return models to views, file streams, and also redirect to another controller’s Action method.

Does FileStreamResult close stream?

Yes. It uses a using block around the stream, and that ensures that the resource will dispose.

How do I return an Excel file from Web API?

Export the Excel File in ASP.Net Web API

Add the Model Class “Record. cs” in the model folder. In the “Solution Explorer”.
In the “HomeController” write some code to export the Excel file. This Excel file exists: In the “Solution Explorer”.
Now write some HTML code in the “index. cshtml” file. This file exists:

CAN REST API return CSV?

You can either write the CSV to the HTTP response stream and set the header there or return a Response object like so: return Response. ok(myCsvText). header(“Content-Disposition”, “attachment; filename=” + fileName).

How do I return a CSV file in Web API?

Get ASP.NET Web API To Return JSON Instead Of XML

public static void Register(HttpConfiguration config)
{
config.Routes.MapHttpRoute(name: “DefaultApi”, routeTemplate: “api/{controller}/{id}”, defaults: new.
{
id = RouteParameter.Optional.
});
//To produce JSON format add this line of code.

When to use filestreamresult in MVC core?

FileStreamResult class is used when Stream (MemoryStream or FileStream) needs to be downloaded as File. Note: For beginners in ASP.Net MVC Core, please refer my article ASP.Net MVC Core Hello World Tutorial with Sample Program example.

How to return a file from a stream?

To return a file stream, you can use a FileStreamResult. This lets you specify the stream, the MIME type, and some other options (like the file name). The Controller has a shortcut for this – you can just return File: [ HttpGet (“Download/ {id}”)]

How to use fileresults to return a response?

Create a folder under wwwroot folder with name download to keep downloadable files. Add a sample file to this folder. Your file structure should be like this. The action result that returns FileResults writes files as a response. The File method takes two parameters first is the path of the file and the second is the MIME type.

How to return a file stream from WebAPI?

So you can easily put your data in to a stream, but then you need to return it in the right way from the WebAPI. To return a file stream, you can use a FileStreamResult . This lets you specify the stream, the MIME type, and some other options (like the file name). var data = await _myService.

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