CefSharp(二) 文件下载功能

Bertha 。 2022-08-19 15:19 450阅读 0赞

上节讲了如何将CefSharp集成到C\#中，但集成后将web界面链接进ChromiumWebBrowser后，但web界面上下载附件的功能不好使咯。

百度了半天还是没搞定，只能去看官网的Excample和源代码，最后瞎猫碰死耗子给搞定了，需要去实现一个接口。

public RevenueContractFrmWeb(Adapter adapter)
            {
                Adapter = adapter;
                InitializeComponent();
                //string url = GlobalDefination.Urlex + "/go-logistics-client/inAndOutPages/incomeContract/contractMg/ContractMain.jsp"; 
                //webBrowser.Navigate(url+"?sessionId=" + adapter.SessionId);
    
                string url =  GlobalDefination.Urlex + "/go-logistics-client/inAndOutPages/incomeContract/contractMg/ContractMain.jsp?sessionId=" + adapter.SessionId;
                CefSharp.WinForms.ChromiumWebBrowser wb = new CefSharp.WinForms.ChromiumWebBrowser(url);
                wb.Dock = DockStyle.Fill;
                this.Controls.Add(wb); 
                wb.DownloadHandler = new DownloadHandler();
            }

internal cl
     ass DownloadHandler : IDownloadHandler
            {
    
                public bool OnBeforeDownload(CefSharp.DownloadItem downloadItem, out string downloadPath, out bool showDialog)
                {
                    downloadPath ="";
                    showDialog = true;
                    return true;
                }
                public bool OnDownloadUpdated(CefSharp.DownloadItem downloadItem)
                {
                    return false;
                }
            }

public bool OnDownloadUpdated(CefSharp.DownloadItem downloadItem)这个地方要return false，就会弹出一个下载文件选择框，否则就不会弹出。  
![这里写图片描述][20160124215402479]

[20160124215402479]: /images/20220731/bbc349fa4f4a4e14ab6c8f923fa17c98.png