In this article I will explain with an example, how to download CSV file from URL in ASP.Net Core (.Net Core) MVC.
Note: For beginners in ASP.Net (.Net Core 7), please refer my article ASP.Net Core 7: Hello World Tutorial with Sample Program example.
 
The CSV file will be downloaded from the URL using WebClient class and then will be saved in a Folder (Directory).
 
 

CSV File URL

The following CSV file will be used in this article.
https://raw.githubusercontent.com/aspsnippets/test/master/Sample.csv
ASP.Net Core: Download CSV File form URL
 
 

Namespaces

You will need to import the following namespace.
using System.Net;
 
 

Controller

The Controller consists of following Action method.

Action method for handling GET operation

Inside this Action method, the CSV file is downloaded from the URL using DownloadFile method of the WebClient class.

DownloadFile method

It accepts the following two parameters:
address – The URL of the file to be downloaded.
fileName – Path of the Folder (Directory) where the file will be downloaded.
public class HomeController : Controller
{
    public IActionResult Index()
    {
        ServicePointManager.Expect100Continue = true;
        ServicePointManager.SecurityProtocol = (SecurityProtocolType)3072;
        WebClient webClient = new WebClient();
        webClient.DownloadFile("https://raw.githubusercontent.com/aspsnippets/test/master/Sample.csv", @"D:\Files\Customers.csv");
        return View();
    }
}
 
 

View

HTML Markup

There is no coding part in View page. Hence, it is skipped.
@{
    Layout = null;
}
 
<!DOCTYPE html>
 
<html>
<head>
    <meta name="viewport" content="width=device-width" />
    <title>Index</title>
</head>
<body>
</body>
</html>
 
 

Screenshot

The downloaded CSV file

ASP.Net Core: Download CSV File form URL
 
 

Downloads

Download Code