标签：gre gif 生成 rgs lap rectangle line win save
首先是把 HTML 转换为图片。
public partial class Form1 : Form { public Form1() { InitializeComponent(); } WebBrowser webBrowser = null; public void ConvertToImg() { webBrowser = new WebBrowser(); //是否显式滚动条 webBrowser.ScrollBarsEnabled = false; //加载HTML页面的地址 webBrowser.Navigate("http://www.baidu.com"); //页面加载完成执行事件 webBrowser.DocumentCompleted += new WebBrowserDocumentCompletedEventHandler(webBrowser_DocumentCompleted); } private void webBrowser_DocumentCompleted(object sender, EventArgs e)//这个就是当网页载入完毕后要进行的操作 { //获取解析后HTML的大小 System.Drawing.Rectangle rectangle = webBrowser.Document.Body.ScrollRectangle; int width = rectangle.Width; int height = rectangle.Height; //设置解析后HTML的可视区域 webBrowser.Width = width; webBrowser.Height = height; Bitmap bitmap = new System.Drawing.Bitmap(width, height); webBrowser.DrawToBitmap(bitmap, new System.Drawing.Rectangle(0, 0, width, height)); //设置图片文件保存路径和图片格式，格式可以自定义 string filePath = AppDomain.CurrentDomain.BaseDirectory + "../../SaveFIle/" + DateTime.Now.ToString("yyyyMMddHHmmssfff") + ".png"; bitmap.Save(filePath, System.Drawing.Imaging.ImageFormat.Png); } private void button1_Click(object sender, EventArgs e) { ConvertToImg(); } }
上面这种方法是解析指定URL地址的HTML，然后转换为图片。当然，也可以直接写一些HTML标签。如下：
public partial class Form1 : Form { public Form1() { InitializeComponent(); } WebBrowser webBrowser = null; public void ConvertToImg() { string html = "<div><table border = \"1\" cellspacing = \"0\" cellpadding = \"3\" style = \"text-align:center;\"><tr><th style = \"width:60px;\">字段1</th><th style = \"width:60px;\">字段2</th><th style = \"width:60px;\">字段3</th></tr><tr style = \"color:green;\"><td>小明</td><td>22</td><td>185</td></tr><tr style = \"color:red;\"><td>小青</td><td>21</td><td>170</td></tr></table></div>"; webBrowser = new WebBrowser(); //是否显式滚动条 webBrowser.ScrollBarsEnabled = false; //加载 html webBrowser.DocumentText = html; //页面加载完成执行事件 webBrowser.DocumentCompleted += new WebBrowserDocumentCompletedEventHandler(webBrowser_DocumentCompleted); } private void webBrowser_DocumentCompleted(object sender, EventArgs e)//这个就是当网页载入完毕后要进行的操作 { //获取解析后HTML的大小 System.Drawing.Rectangle rectangle = webBrowser.Document.Body.ScrollRectangle; int width = rectangle.Width; int height = rectangle.Height; //设置解析后HTML的可视区域 webBrowser.Width = width; webBrowser.Height = height; Bitmap bitmap = new System.Drawing.Bitmap(width, height); webBrowser.DrawToBitmap(bitmap, new System.Drawing.Rectangle(0, 0, width, height)); //设置图片文件保存路径和图片格式，格式可以自定义 string filePath = AppDomain.CurrentDomain.BaseDirectory + "../../SaveFIle/" + DateTime.Now.ToString("yyyyMMddHHmmssfff") + ".png"; bitmap.Save(filePath, System.Drawing.Imaging.ImageFormat.Png); } private void button1_Click(object sender, EventArgs e) { ConvertToImg(); } }
然后把图片转换为PDF，这里需要用到 iTextSharp.dll 这个组件。
public partial class Form1 : Form { public Form1() { InitializeComponent(); } WebBrowser webBrowser = null; public void ConvertToImg() { string html = "<div><table border = \"1\" cellspacing = \"0\" cellpadding = \"3\" style = \"text-align:center;\"><tr><th style = \"width:60px;\">字段1</th><th style = \"width:60px;\">字段2</th><th style = \"width:60px;\">字段3</th></tr><tr style = \"color:green;\"><td>小明</td><td>22</td><td>185</td></tr><tr style = \"color:red;\"><td>小青</td><td>21</td><td>170</td></tr></table></div>"; webBrowser = new WebBrowser(); //是否显式滚动条 webBrowser.ScrollBarsEnabled = false; //加载 html webBrowser.DocumentText = html; //页面加载完成执行事件 webBrowser.DocumentCompleted += new WebBrowserDocumentCompletedEventHandler(webBrowser_DocumentCompleted); } private void webBrowser_DocumentCompleted(object sender, EventArgs e)//这个就是当网页载入完毕后要进行的操作 { //获取解析后HTML的大小 System.Drawing.Rectangle rectangle = webBrowser.Document.Body.ScrollRectangle; int width = rectangle.Width; int height = rectangle.Height; //设置解析后HTML的可视区域 webBrowser.Width = width; webBrowser.Height = height; Bitmap bitmap = new System.Drawing.Bitmap(width, height); webBrowser.DrawToBitmap(bitmap, new System.Drawing.Rectangle(0, 0, width, height)); //设置图片文件保存路径和图片格式，格式可以自定义 string filePath = AppDomain.CurrentDomain.BaseDirectory + "../../SaveFIle/" + DateTime.Now.ToString("yyyyMMddHHmmssfff") + ".png"; bitmap.Save(filePath, System.Drawing.Imaging.ImageFormat.Png); //创建PDF FileStream fileStream = new FileStream(AppDomain.CurrentDomain.BaseDirectory + "../../SaveFIle/" + DateTime.Now.ToString("yyyyMMddHHmmssfff") + ".pdf", FileMode.Create); byte[] result = CreatePDF(bitmap, width, height); fileStream.Write(result, 0, result.Length); fileStream.Close(); fileStream.Dispose(); } private void button1_Click(object sender, EventArgs e) { ConvertToImg(); } public byte[] CreatePDF(Bitmap bitmap, int width, int height) { using (MemoryStream ms = new MemoryStream()) { Document doc = new Document(new iTextSharp.text.Rectangle(0, 0, width, height), 3, 3, 3, 3); // 左右上下 PdfWriter writer = PdfWriter.GetInstance(doc, ms); writer.CloseStream = false; doc.Open(); iTextSharp.text.Image img = iTextSharp.text.Image.GetInstance(bitmap, System.Drawing.Imaging.ImageFormat.Png); img.ScalePercent(100); // 放缩比例 doc.Add(img); // 添加图片对像 doc.Close(); return ms.ToArray(); } } }
不过这种生成图片之后再转成PDF，会造成像素的丢失，所以看起来要比图片模糊一点。
还有一种办法就是直接生成PDF，这里需要安装 ABCpdf。不过，这个是收费的。。。
public partial class Form1 : Form { public Form1() { InitializeComponent(); } public void ConvertToPDF() { string html = "<div><table border = \"1\" cellspacing = \"0\" cellpadding = \"3\" style = \"text-align:center;\"><tr><th style = \"width:60px;\">字段1</th><th style = \"width:60px;\">字段2</th><th style = \"width:60px;\">字段3</th></tr><tr style = \"color:green;\"><td>小明</td><td>22</td><td>185</td></tr><tr style = \"color:red;\"><td>小青</td><td>21</td><td>170</td></tr></table></div>"; //创建一个Doc对象 Doc doc = new Doc(); //Rect默认是文档整个页面大小,这里的Inset表示将Rect左右留出15的空白,上下留出20的空白 doc.Rect.Inset(15, 20); //直接设置html int docID = doc.AddHtml(html); //设置URL //int docID = doc.AddImageUrl("http://www.baidu.com"); //设置字体 doc.AddFont("Arial"); while (true) { //判断是否还有内容 if (!doc.Chainable(docID)) { break; } //如果还有内容就添加一页 doc.Page = doc.AddPage(); //根据ID添加内容并返回页面上该内容对应的新ID docID = doc.AddImageToChain(docID); } string filePath = AppDomain.CurrentDomain.BaseDirectory + "../../SaveFIle/" + DateTime.Now.ToString("yyyyMMddHHmmssfff") + ".pdf"; doc.Save(filePath); doc.Clear(); doc.Dispose(); } private void button1_Click(object sender, EventArgs e) { ConvertToPDF(); } }
标签：gre gif 生成 rgs lap rectangle line win save
原文地址：http://www.cnblogs.com/Brambling/p/6926503.html
