CefSharp: download files after login to site on WPF

Show browser in my form:

browser = new CefSharp.WinForms.ChromiumWebBrowser("https://yoursite.com")
{
   Dock = DockStyle.Fill,
   Size = new Size(600, 600),
   Location = new Point(200, 200),
};
this.panel1.Controls.Add(browser);

I first enter my account on browser (because without login can't download file.) How to download file by url programmatically by CefSharp and save on pc?

For example like this:

browser.DownloadFile("https://yoursite.com/download/public/a.zip", "D:\\a.zip");

Thanks