Download file with winfs cefsharp

Question

I am trying to download some file (image, audio file or something else) from my application using cefsharp winfs. I read any other post but nothing works. Do you have any sample code to show me how to implement the bootloader for cefsharp?

Of course, when I try to download some files, nothing happens.

thanks

Answer 1

To solve this problem, just download the DownloadHandler.cs class found here.

Visual Studio : MyBrowser.DownloadHandler = new DownloadHandler(); : using CefSharp.Example; - , !

Answer 2

2 . , , . MinimalExample, Cefsharp (cefsharp-master), :

1. →
2. cefsharp-master → CefSharp.example → DownloadHandler.cs

3. BrowserForm.cs :

   browser.DownloadHandler = new DownloadHandler();

4. !

DownloadHandler.cs

// Copyright © 2013 The CefSharp Authors. All rights reserved.
//
// Use of this source code is governed by a BSD-style license that can be found in the LICENSE file.

using System;

namespace CefSharp.Example.Handlers
{
    public class DownloadHandler : IDownloadHandler
    {
        public event EventHandler<DownloadItem> OnBeforeDownloadFired;

        public event EventHandler<DownloadItem> OnDownloadUpdatedFired;

        public void OnBeforeDownload(IWebBrowser chromiumWebBrowser, IBrowser browser, DownloadItem downloadItem, IBeforeDownloadCallback callback)
        {
            OnBeforeDownloadFired?.Invoke(this, downloadItem);

            if (!callback.IsDisposed)
            {
                using (callback)
                {
                    callback.Continue(downloadItem.SuggestedFileName, showDialog: true);
                }
            }
        }

        public void OnDownloadUpdated(IWebBrowser chromiumWebBrowser, IBrowser browser, DownloadItem downloadItem, IDownloadItemCallback callback)
        {
            OnDownloadUpdatedFired?.Invoke(this, downloadItem);
        }
    }
}

Answer 3

: OnBeforeDownloadFired() - DownloadHandler DownloadHandler.cs.

(,.mobi ebook), "_blank". , . _blank , , .

, . , , , , :

DownloadHandler downer = new DownloadHandler(this);
browser.DownloadHandler = downer;
downer.OnBeforeDownloadFired += OnBeforeDownloadFired;
downer.OnDownloadUpdatedFired += OnDownloadUpdatedFired;

private void OnBeforeDownloadFired(object sender, DownloadItem e)
{
    this.UpdateDownloadAction("OnBeforeDownload", e);
}

private void OnDownloadUpdatedFired(object sender, DownloadItem e)
{
    this.UpdateDownloadAction("OnDownloadUpdated", e);
}

private void UpdateDownloadAction(string downloadAction, DownloadItem downloadItem)
{
    /*
    this.Dispatcher.Invoke(() =>
    {
        var viewModel = (BrowserTabViewModel)this.DataContext;
        viewModel.LastDownloadAction = downloadAction;
        viewModel.DownloadItem = downloadItem;
    });
    */
}

// ...

public class DownloadHandler : IDownloadHandler
{
    public event EventHandler<DownloadItem> OnBeforeDownloadFired;

    public event EventHandler<DownloadItem> OnDownloadUpdatedFired;

    MainForm mainForm;

    public DownloadHandler(MainForm form)
    {
        mainForm = form;
    }

    public void OnBeforeDownload(IBrowser browser, DownloadItem downloadItem, IBeforeDownloadCallback callback)
    {
        var handler = OnBeforeDownloadFired;
        if (handler != null)
        {
            handler(this, downloadItem);
        }

        if (!callback.IsDisposed)
        {
            using (callback)
            {
                callback.Continue(downloadItem.SuggestedFileName, showDialog: true);
            }
        }
    }

    public void OnDownloadUpdated(IBrowser browser, DownloadItem downloadItem, IDownloadItemCallback callback)
    {
        var handler = OnDownloadUpdatedFired;
        if (handler != null)
        {
            handler(this, downloadItem);
        }
    }
}

// ...

Answer 4

, , , , , DownloadHandler. .