Webbrowser 取消下载提示框

在使用Webbrowser抓取网页信息时,碰到需要下载文件,这时需要用户介入操作,如何避免:

 

首先引进

[DllImport("urlmon.dll", CharSet = CharSet.Auto, SetLastError = true)]
          static extern Int32 URLDownloadToFile(
              [MarshalAs(UnmanagedType.IUnknown)] object pCaller,
              [MarshalAs(UnmanagedType.LPWStr)] string szURL,
              [MarshalAs(UnmanagedType.LPWStr)] string szFileName,
              Int32 dwReserved,
              IntPtr lpfnCB);
再添加  
this.WebBrowser.Navigating += WebBrowser_Navigating;

void WebBrowser_Navigating(object sender, WebBrowserNavigatingEventArgs e)
{
           //设置下载条件
if (e.Url != null && e.Url.AbsolutePath.IndexOf("/V1/Delivery/Download") > -1) { try { if (Citation.IsValid) { UIManager.ProgressMessageHandler(this, new UIEventArgs { Message = "Downloading "+ e.Url.Segments[e.Url.Segments.Length - 1]});                      string fullname = Path.Combine(pdfSavePath_, e.Url.Segments[e.Url.Segments.Length - 1]);                      
                     //在这替换“下载提示框”,并自定义下载
                     
int response = URLDownloadToFile(null, e.Url.AbsoluteUri, fullname, 0, IntPtr.Zero); if (response == 0) { Citation.IsDownloaded = true; UIManager.ProgressMessageHandler(this, new UIEventArgs { Message = Citation.Name + " has downloaded." }); } } } catch { } finally {
                 //取消“下载提示框”,不会再提示用户 e.Cancel
= true; } } }

 



                 
posted @ 2015-10-22 15:26  Yu  阅读(1747)  评论(0编辑  收藏  举报