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  • WebSnapshotsHelper(HTML转换为图片)

     1 /// <summary>
     2     /// WebBrowser Url生成图片
     3     /// HTML转图片
     4     /// </summary>
     5     public class WebSnapshotsHelper
     6     {
     7         Bitmap m_Bitmap;
     8         string m_Url;
     9         int m_BrowserWidth, m_BrowserHeight, m_ThumbnailWidth, m_ThumbnailHeight;
    10         public WebSnapshotsHelper(string Url, int BrowserWidth, int BrowserHeight, int ThumbnailWidth, int ThumbnailHeight)
    11         {
    12             m_Url = Url;
    13             m_BrowserHeight = BrowserHeight;
    14             m_BrowserWidth = BrowserWidth;
    15             m_ThumbnailWidth = ThumbnailWidth;
    16             m_ThumbnailHeight = ThumbnailHeight;
    17         }
    18         public static Bitmap GetWebSiteThumbnail(string Url, int BrowserWidth, int BrowserHeight, int ThumbnailWidth, int ThumbnailHeight)
    19         {
    20             WebSnapshotsHelper thumbnailGenerator = new WebSnapshotsHelper(Url, BrowserWidth, BrowserHeight, ThumbnailWidth, ThumbnailHeight);
    21             return thumbnailGenerator.GenerateWebSiteThumbnailImage();
    22         }
    23         public Bitmap GenerateWebSiteThumbnailImage()
    24         {
    25             Thread m_thread = new Thread(new ThreadStart(_GenerateWebSiteThumbnailImage));
    26             m_thread.SetApartmentState(ApartmentState.STA);
    27             m_thread.Start();
    28             m_thread.Join();
    29             return m_Bitmap;
    30         }
    31         private void _GenerateWebSiteThumbnailImage()
    32         {
    33             WebBrowser m_WebBrowser = new WebBrowser();
    34             m_WebBrowser.ScrollBarsEnabled = false;
    35             m_WebBrowser.Navigate(m_Url);
    36             m_WebBrowser.DocumentCompleted += new WebBrowserDocumentCompletedEventHandler(WebBrowser_DocumentCompleted);
    37             while (m_WebBrowser.ReadyState != WebBrowserReadyState.Complete)
    38             {
    39                 Application.DoEvents();
    40             }
    41             m_WebBrowser.Dispose();
    42         }
    43         private void WebBrowser_DocumentCompleted(object sender, WebBrowserDocumentCompletedEventArgs e)
    44         {
    45             WebBrowser m_WebBrowser = (WebBrowser)sender;
    46             m_WebBrowser.ClientSize = new Size(this.m_BrowserWidth, this.m_BrowserHeight);
    47             m_WebBrowser.ScrollBarsEnabled = false;
    48             m_Bitmap = new Bitmap(m_WebBrowser.Bounds.Width, m_WebBrowser.Bounds.Height);
    49             m_WebBrowser.BringToFront();
    50             m_WebBrowser.DrawToBitmap(m_Bitmap, m_WebBrowser.Bounds);
    51             m_Bitmap = (Bitmap)m_Bitmap.GetThumbnailImage(m_ThumbnailWidth, m_ThumbnailHeight, null, IntPtr.Zero);
    52         }
    53 
    54     }
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  • 原文地址:https://www.cnblogs.com/yidengbone/p/6600590.html
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