在CEFSHARP中下载完成

Question

我尝试为带有cefsharp的网站做一个小的下载器。对于下载文件，我使用CEFSHARP的非常好的示例下载Handler。现在，下载完成后，我想做一些事情。我知道" downloadItem "具有" iscomplete "值。但是，如果我在" ondownloadupdated "的方法中放置这样的东西，则永远不会执行内容

        if (downloadItem.IsComplete) {
            //do stuff
        }

所以，我的问题是，我必须在哪里检查下载的物品是否完成？

编辑：完成下载手：

    public class DownloadHandler : IDownloadHandler {
    public event EventHandler<DownloadItem> OnBeforeDownloadFired;
    public event EventHandler<DownloadItem> OnDownloadUpdatedFired;
    private bool stop;
    private DownloadWindow window;
    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);
            }
        }
        window = new DownloadWindow(downloadItem.TotalBytes, downloadItem.SuggestedFileName, this);
        window.Show();
    }
    public void OnDownloadUpdated(IBrowser browser, DownloadItem downloadItem, IDownloadItemCallback callback) {
        var handler = OnDownloadUpdatedFired;
        if (handler != null) {
            handler(this, downloadItem);
        }
        if (window != null) {
            window.UpdateProgress(downloadItem.ReceivedBytes);
        }
        if (stop) {
            callback.Cancel();
        }
    }
    public void StopDownload() {
        stop = true;
    }
}

Answer 1

您需要在OnDownloadUpdated方法中检查它。

public void OnDownloadUpdated(IBrowser browser, DownloadItem downloadItem, IDownloadItemCallback callback)
{
    if (downloadItem.IsComplete || downloadItem.IsCancelled)
        {
         //do stuff
        }
}

别忘了，您的班级必须实现IDownloadHandler接口。一个好的调试策略将是将断点放在此方法中，以查看/了解何时被触发。