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; } } }
原文：http://www.cnblogs.com/yipeng-yu/p/4901158.html