如何捕捉C＃和WebKit.NET的完整网站截图？

Question

我正在使用WebKit.NET将浏览器组件集成到我的C＃应用​​程序中。问题是我只能用截图捕获浏览器窗口中的可见部分。有没有办法捕捉整个页面的截图？

Answer 1

看起来这是有可能通过使用NativeMethods.SendMessage，虽然这可能搞砸了消息队列，你可以使用http://cutycapt.sourceforge.net/或http://iecapt.sourceforge.net/或http://labs.awesomium.com/capturing-web-pages-with-c-net/？

Answer 2

我使用WebBrowser来代替; ScrollBarsEnabled = false让我捕捉整个页面。

下面是一些代码：

protected override void Render(HtmlTextWriter writer) 
{ 

     StringBuilder builder = new StringBuilder(); 
     HtmlTextWriter htw = new HtmlTextWriter(new StringWriter(builder)); 
     base.Render(htw); 
     string html = builder.ToString(); 

     _Generate(html); 
} 


private void _Generate(string html) 
{ 
    var browser = new WebBrowser { ScrollBarsEnabled = false }; 
    DisplayHtml(html, browser); 
    browser.DocumentCompleted += WebBrowser_DocumentCompleted; 
    while (browser.ReadyState != WebBrowserReadyState.Complete) 
     Application.DoEvents(); 
    browser.Dispose(); 
} 

private void DisplayHtml(string html, WebBrowser browser) 
{ 
    browser.Navigate("about:blank"); 
    if (browser.Document != null) 
    { 
     browser.Document.Write(string.Empty); 
    } 
    browser.DocumentText = html; 
} 

Answer 3

试试这个：

using System.IO; 
using System.Drawing; 
using System.Drawing.Imaging; 
using System.Threading; 
using System.Windows.Forms; 

    public byte[] picbytes; 

    private void capture_Click(object sender, EventArgs e) 
    { 

     makepicture(txtURL.Text.Trim()); 
     pictureBox1.Visible = true; 
     pictureBox1.Image = ByteToImage(picbytes); 
    } 

    private void makepicture(string url) 
    { 
     Thread thread = new Thread(delegate() 
     { 
      using (WebBrowser browser = new WebBrowser()) 
      { 
       browser.ScrollBarsEnabled = false; 
       browser.AllowNavigation = true; 
       browser.Navigate(url); 
       browser.Width = 1024; 
       browser.Height = 1575; 
       browser.DocumentCompleted += new WebBrowserDocumentCompletedEventHandler(DocumentCompleted); 
       while (browser.ReadyState != WebBrowserReadyState.Complete) 
       { 
        System.Windows.Forms.Application.DoEvents(); 
       } 

      } 
     }); 
     thread.SetApartmentState(ApartmentState.STA); 
     thread.Start(); 
     thread.Join(); 
    } 

    private void DocumentCompleted(object sender, WebBrowserDocumentCompletedEventArgs e) 
    { 
     WebBrowser browser = sender as WebBrowser; 
     using (Bitmap bitmap = new Bitmap(browser.Width, browser.Height)) 
     { 
      browser.DrawToBitmap(bitmap, new System.Drawing.Rectangle(0, 0, browser.Width, browser.Height)); 
      using (MemoryStream stream = new MemoryStream()) 
      { 
       bitmap.Save(stream, System.Drawing.Imaging.ImageFormat.Png); 
       byte[] bytes = stream.ToArray(); 
       picbytes = bytes; 

      } 
     } 
    } 

    public static Bitmap ByteToImage(byte[] blob) 
    { 
     MemoryStream mStream = new MemoryStream(); 
     byte[] pData = blob; 
     mStream.Write(pData, 0, Convert.ToInt32(pData.Length)); 
     Bitmap bm = new Bitmap(mStream, false); 
     mStream.Dispose(); 
     return bm; 

    }