C# Html網頁產生圖片解決方案1

標籤：

1.使用System.Windows.Forms命名空間下的WebBrowser控制項載入網頁並產生圖片

GiHub參考地址：

https://github.com/tianma3798/FileOparate/

 

使用方法：

public static void TestOne(){    ThumbnailImg img = new ThumbnailImg("e:\\one.png");    //img.SetToJpeg();    //img.SetToGif();    ThumbnailOperate _operate = new ThumbnailOperate("http://korea.weilanliuxue.cn", img);    _operate.GenerateImg();    Console.WriteLine("儲存成功");}

 

核心代碼類：

    /// <summary>    /// 網頁產生產生圖片協助類    /// </summary>    public class Thumbnail    {        /// <summary>        /// 網頁產生的圖片        /// </summary>        private Bitmap _bitmap;        private string _url;        private int _browserWidth, _browserHeight, _tWidth, _tHeight;        /// <summary>        /// 是否使用，指定的寬度和高度        /// </summary>        public bool IsCustumer { get; set; }        /// <summary>        /// 指定網頁地址，使用頁面的body的高度        /// 產生圖片的，寬度和高度與body相同        /// </summary>        /// <param name="url">網頁地址</param>        /// <param name="browserWidth">瀏覽器寬度</param>        public Thumbnail(string url, int browserWidth)        {            IsCustumer = false;            _url = url;            _browserWidth = browserWidth;        }        /// <summary>        /// 初始化構造        /// </summary>        /// <param name="url">網頁地址</param>        /// <param name="browserWidth">瀏覽器寬度</param>        /// <param name="browserHeight">瀏覽器高度</param>        /// <param name="tWidth">產生圖片寬度</param>        /// <param name="tHeight">產生圖片高度</param>        public Thumbnail(string url, int browserWidth, int browserHeight, int tWidth, int tHeight)        {            IsCustumer = true;            _url = url;            _browserWidth = browserWidth;            _browserHeight = browserHeight;            _tWidth = tWidth;            _tHeight = tHeight;        }        /// <summary>        /// 擷取網頁的圖片        /// </summary>        /// <param name="url">網頁地址</param>        /// <param name="browserWidth">瀏覽器寬度</param>        /// <param name="browserHeight">瀏覽器高度</param>        /// <param name="tWidth">產生圖片寬度</param>        /// <param name="tHeight">產生圖片高度</param>        public static Bitmap GetThumbnail(string url, int browserWidth, int browserHeight, int tWidth, int tHeight)        {            Thumbnail thumb = new Thumbnail(url, browserWidth, browserHeight, tWidth, tHeight);            return thumb.GenerateImage();        }        /// <summary>        /// 產生圖片資訊        /// </summary>        /// <returns></returns>        public Bitmap GenerateImage()        {            Thread thread = new Thread(new ThreadStart(_GenerateImage));            thread.SetApartmentState(ApartmentState.STA);            thread.Start();            thread.Join();            return _bitmap;        }        /// <summary>        /// 使用WebBrowser產生圖片        /// </summary>        private void _GenerateImage()        {            WebBrowser browser = new WebBrowser();            browser.ScrollBarsEnabled = false;            browser.ScriptErrorsSuppressed = false;            browser.Navigate(_url);            browser.DocumentCompleted += new WebBrowserDocumentCompletedEventHandler(_DocumentCompleted);            while (browser.ReadyState != WebBrowserReadyState.Complete)                Application.DoEvents();            browser.Dispose();        }        /// <summary>        /// 頁面載入完成事件        /// </summary>        private void _DocumentCompleted(object sender, WebBrowserDocumentCompletedEventArgs e)        {            WebBrowser browser = sender as WebBrowser;            if (IsCustumer)            {                //產生自訂寬度和高度的圖片                browser.ClientSize = new Size(_browserWidth, _browserHeight);                _bitmap = new Bitmap(browser.Bounds.Width, browser.Bounds.Height);                browser.DrawToBitmap(_bitmap, browser.Bounds);                _bitmap = (Bitmap)_bitmap.GetThumbnailImage(_tWidth, _tHeight, null, IntPtr.Zero);            }            else            {                //產生預設body寬度和高度的圖片（最常用）                _browserHeight = 5000;                if (browser.Document.Body != null)                {                    _browserHeight = browser.Document.Body.OffsetRectangle.Height;                    browser.ClientSize = new Size(_browserWidth, _browserHeight);                    Rectangle bodyRect = browser.Document.Body.OffsetRectangle;                    _bitmap = new Bitmap(_browserWidth, bodyRect.Height);                    browser.BringToFront();                    browser.DrawToBitmap(_bitmap, bodyRect);                    _bitmap = (Bitmap)_bitmap.GetThumbnailImage(_browserWidth, bodyRect.Height, null, IntPtr.Zero);                }                else                {                    browser.ClientSize = new Size(_browserWidth, _browserHeight);                    _bitmap = new Bitmap(_browserWidth, _browserHeight);                    browser.BringToFront();                    browser.DrawToBitmap(_bitmap, new Rectangle(0,0,_browserWidth,_browserHeight));                    _bitmap = (Bitmap)_bitmap.GetThumbnailImage(_browserWidth, _browserHeight, null, IntPtr.Zero);                }                     //_bitmap = (Bitmap)_bitmap.GetThumbnailImage(bodyRect.Width, bodyRect.Height, null, IntPtr.Zero);            }        }    }

 

C# Html網頁產生圖片解決方案1