In the end line 7 , we return a FileContentResult object that is created using the method File byte[] fileContents, string contentType, string fileDownloadName. Note that we should validate the request and user permissions before finding or generating the requested file. And you can choose to stream the file too. In the File method line 7 , the second parameter contentType is used in the HTTP header to indicate the format of contents transmitted over the internet.
You can set the value for contentType according to your file type. In the File method, the third parameter fileDownloadName determines the value for the filename attribute in the content-disposition HTTP response header.
Browsers treat this value as the top priority to dictate the filename when downloading the file. In the responses section, the Swagger UI provides a link for downloading the returned file. Sometimes, the file type should be determined at runtime. Then in this case, we should set the contentType based on the file extension. NET Core natively supports this kind of translation.
An example implementation is as follows. StaticFiles refer to the using statement in line 1. The code in the MVC application has changed a lot over time.
The way it is right now, it doesn't get to the stage where it tries to display in browser. It gets an error before that. Exception Details: Newtonsoft. JsonSerializationException: Could not create an instance of type System.
Type is an interface or abstract class and cannot be instantiated. Path 'FileStream'. Commented out is code from some other attempts. When I was using that code, I was returning a byte array from the server. It looked like:. Stack Overflow for Teams — Collaborate and share knowledge with a private group.
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Code For getting pdf: private System. ToString , sqlca ; sqlca. ExecuteReader CommandBehavior. GetBytes 0, startIndex, buffer, 0, bufferSize ; stream. Close ; sqlca. Append "? Append keys[0] ; argumentsSB. Append keys[i] ; argumentsSB. Clear ; client. DeserializeObject response. Back when I used to get a blank pdf reader the reader was blank. You just need to make certain that the web server knows what to do with the file that it receives. But since you have not provided any information about either your code or the api, it is impossible to make any useful suggestions.
MadMyche Aug am. There are 2 separate projects involved in your question, and you have provided code for neither. You also have provided no results, exceptions, or logs from these attempts.
How do you expect us to help you troubleshoot and fix? If this were my mine to work with- I would get the Web API upload portion working which could be accessed via a simple form on a web page.
Once I got that working then I would try accessing via your win-forms project. Accept Solution Reject Solution. Here are two examples you can try, probably here's what your web api code will look like C. Copy Code. Posted Aug pm dnxit. Add your solution here. OK Paste as. My web API is sending the base64 string and when I am calling the web api , I am getting the following error: unexpected token in during parsing the Json. Thanks man. It took me 10 minutes to make my file download through Ajax work with Chrome and completely fruitless to make it work with IE.
Thanks to you it finally worked. Could you please help in this…. I am using this but I have a question. Is there any way to receive a callback once the download is finished?
As far as I have tested this, link. For this to work in ie 11 and Edge, there need to be and file extension to this line: window. Thanks for writing such a nice post. In my case, the server streams the file.
From my understanding when creating a blob, we wait for the entire file to be read into the blob and then create a URL from the blob. Is there a way where i can start the download as soon as receive the response stream and not wait for the entire file? I am not able to download the file with its file name in secondry window. Is there any approach to solve this in angular js? Facing this issue on both Chrome and firrefox.
Excellent article. Very difficult to find clear examples of fetching PDF files. Was able to adapt it to render in memory-only, display, and then remove the blob. Exactly what our requirements are.
Save my name, email, and website in this browser for the next time I comment. Habr 30 Aug Reply. Anders Poulsen 30 Aug Reply. Nareshbabu 28 May Reply. Details as below. Venkat 15 Sep Reply. Thanks for this, is there a way to make this work in FireFox? Anders Poulsen 15 Sep Reply. It should work in FireFox as it is. Venkata Reddy 16 Sep Reply. Anders Poulsen 17 Sep Reply. Venkat 18 Sep Reply. Anders Poulsen 18 Sep Reply. Viswa 30 Nov Reply. Anders Poulsen 7 Dec Reply.
Raul 16 Jan Reply.
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