Error CS1026 C# download file in startup

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C#

one of the functions of my program and to download a file in the Starup folder.

Searching on the net I found this solution:

using (var client = new WebClient()) { client.DownloadFile("http://nviia.altervista.org/index.html", Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.Startup), "index.html");

but I get the error: CS1026 ) expected

You can help me?

What I have tried:

using (var client = new WebClient()) { client.DownloadFile("http://nviia.altervista.org/index.html", Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.Startup), "index.html");