C# Download [top] File From Url To Browser -
: The base class used in MVC to send a file to the browser.
To download a file from a URL and serve it to a browser using C#, you typically act as a "proxy": your server downloads the file data from a remote source and then streams that data back to the user's browser. This is a common pattern in and Web API applications. 1. Basic Concept c# download file from url to browser
[HttpGet("download-from-url")] public async Task DownloadFromUrl(string fileUrl) { using var client = new HttpClient(); // 1. Fetch the file stream from the remote URL var response = await client.GetAsync(fileUrl); if (!response.IsSuccessStatusCode) return NotFound("External file not found."); var stream = await response.Content.ReadAsStreamAsync(); var contentType = response.Content.Headers.ContentType?.ToString() ?? "application/octet-stream"; var fileName = Path.GetFileName(new Uri(fileUrl).LocalPath); // 2. Return the stream to the browser // This triggers the "Save As" dialog in the user's browser return File(stream, contentType, fileName); } Use code with caution. 3. Key Classes and Methods : The base class used in MVC to send a file to the browser











