How to download files after login to site on WPF by CefSharp?

[miladghiravani]

Hello

I first enter my account on browser (because without login can't download file.)
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);

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

[miladghiravani]

Nobody can help with this question?

[amaitland]

Nobody can help with this question?

Please be patient, no need for a follow up. I will answer questions when time permits.

I see you've also asked at https://stackoverflow.com/questions/67583890/cefsharp-download-files-after-login-to-site-on-wpf

In future please ask your question here or stackoverflow and wait for a reply. Not both, thanks.

For example like this:

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

There's no such method.

You can call IBrowserHost.StartDownload and implement IDownloadHandler.

Following was written in notepad, so you'll have to fix any minor mistakes

chromiumWebBrowser.DownloadHandler = new MyDownloadHandler();

public class MyDownloadHandler : IDownloadHandler
{
	public void OnBeforeDownload(IWebBrowser chromiumWebBrowser, IBrowser browser, DownloadItem downloadItem, IBeforeDownloadCallback callback)
	{
		if (!callback.IsDisposed)
		{
			using (callback)
			{
				callback.Continue(System.IO.Path.Combine(@"c:\temp\downloadFolder", downloadItem.SuggestedFileName), showDialog: false);
			}
		}
	}

	public void OnDownloadUpdated(IWebBrowser chromiumWebBrowser, IBrowser browser, DownloadItem downloadItem, IDownloadItemCallback callback)
	{
		
	}
}

You can inherit from DownloadHandler rather than IDownloadHandler and override the methods you require.

---

Alternatively you can use IFrame.CreateUrlRequest to manually construct a request and save the download yourself to disk.

https://github.com/cefsharp/CefSharp/blob/cefsharp/90/CefSharp.Test/OffScreen/OffScreenBrowserBasicFacts.cs#L292 should be a base that you can adapt to implement this yourself. You'll need

CefSharp/CefSharp.Example/UrlRequestClient.cs

Line 10 in 4608924

public class UrlRequestClient : IUrlRequestClient

as well.

[miladghiravani]

@amaitland Thank you, Yes you are right.
Thank you for your best answer