CODEWITHSUNDEEP
c#.netasp.net-coreasp.net-core-webapi
Naveen
Naveen

Reputation: 23

HttpResponseMessage Returning Json Object in browser instead of file download - WEBAPI .net Core

The below code is returning JSON object instead of downloading the PDF file:

var dataStream = new MemoryStream(System.IO.File.ReadAllBytes(@"C:\data\test12.pdf"));
                dataStream.Position = 0;
                HttpResponseMessage responseMsg = new HttpResponseMessage(HttpStatusCode.OK);
                responseMsg.Content = new StreamContent(dataStream);
                responseMsg.Content.Headers.ContentDisposition = new System.Net.Http.Headers.ContentDispositionHeaderValue("inline");
                responseMsg.Content.Headers.ContentDisposition.FileName = file.Rows[0][1].ToString();
                responseMsg.Content.Headers.ContentType = new MediaTypeHeaderValue("application/pdf");
                responseMsg.Content.Headers.ContentLength = dataStream.Length;
                result = responseMsg;

output:

{"version":{"major":1,"minor":1,"build":-1,"revision":-1,"majorRevision":-1,"minorRevision":-1},"content":{"headers":[{"key":"Content-Disposition","value":["inline; filename=4159a9f5-0102-46c3-a39f-7449c00e39e5.pdf"]},{"key":"Content-Type","value":["application/pdf"]},{"key":"Content-Length","value":["7874"]}]},"statusCode":200,"reasonPhrase":"OK","headers":[],"requestMessage":null,"isSuccessStatusCode":true}

Upvotes: 1

Views: 813

Answers (1)

Rena
Rena

Reputation: 36575

The below code is returning JSON object instead of downloading the pdf file.

This is the expected result when you call this api. In your current code the framework is treating HttpResponseMessage as a model.

The correct way to download a file after calling the api should be:

public IActionResult Get()
{
    var dataStream = new MemoryStream(System.IO.File.ReadAllBytes(@"C:\data\test12.pdf"));
    Response.Headers.Add("Content-Disposition", "inline; filename=test.pdf");
    return File(dataStream, "application/pdf");
}

If you want to use HttpResponseMessage, you need call the api by ajax.

Reference: https://stackoverflow.com/a/41115583/11398810

Upvotes: 1

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