如何在Asp.net C＃中将HTML页面输出保存为Image？ [英] How do I save the HTML page output as Image in Asp.net C#?

问题描述

大家好，



我有一种情况需要将HTML div中的内容保存为Web服务器中的Image。



我试图使用Graphic类，但是那些可以将Text部分转换为Image。如果我在HTML div或任何其他对象中有任何图像，那么我会得到无效的转换错误。



我想知道是否还有其他方法可以做到这一点？



以下是我正在使用的代码：

系统.Net.WebRequest webRequest = System.Net.WebRequest.Create（url）; 
 System.Net.WebResponse webResponse = webRequest.GetResponse（）; 
 System.IO.StreamReader sr =  new  System.IO.StreamReader（webResponse.GetResponseStream（），System.Text.Encoding.GetEncoding（  UTF-8））; 
 content = sr.ReadToEnd（）; 
 
  //  保存到文件 
  byte  [] b = StreamFile（content）; 
 
 
 System.IO.MemoryStream ms =  new  System.IO.MemoryStream（b）; 
 System.Drawing.Image img = System.Drawing.Image.FromStream（ms， false ， true ）; 
 img.Save（ @  D：\ pic.jpg，System.Drawing .Imaging.ImageFormat.Jpeg）; 
 
 img.Dispose（）; 
 ms.Close（）; 

谢谢任何帮助

解决方案

此链接将帮助您更好。



获取ASP.NET C＃2.0网站缩略图屏幕截图 [ ^ ]



谢谢

  protected   void  Page_Load（ object  sender，EventArgs e）
 {
  if （IsPostBack）
 {
  //  创建一个新的位图对象 
位图oBitmap = 新位图（ 468 ， 60 ）; 
  //  创建一个新的Graphics对象，这将允许我们在我们的位图上绘制： 
 Graphics oGraphic = Graphics.FromImage（oBitmap）; 
 
  //  定义动态图片的背景颜色： 
  String  scolor = BackgroundColor.SelectedValue; 
 
  //  获取已回发的值 
 < span class =code-sdkkeyword> String  sText = Text.Text; 
  String  sFont = Font.Text; 
颜色oColor = Color.FromName（BackgroundColor.SelectedValue）; 
 
  //  创建两个画笔，这将有助于我们绘制图像。 
  //  第一个，oBrush，将用于绘制图像的背景： 
  //  第二个画笔将用于绘制用户输入的文本 
 SolidBrush oBrush =  new  SolidBrush（oColor）; 
 SolidBrush oBrushwrite =  new  SolidBrush（Color.White）; 
 
  //  填充图像矩形， 
 oGraphic.FillRectangle （oBrush， 0 ， 0 ， 468  ， 60 ）; 
 
  //  用户为文本选择了字体，因此我们将sFont作为第一个参数传递，并硬编码大小： 
字体oFont = 新字体（sFont， 13 ）; 
  //   X和Y点文本 
 PointF oPoint =  new  PointF（5f，5f）; 
 
  //  绘制我们的文字： 
 oGraphic.DrawString（ sText，oFont，oBrushwrite，oPoint）; 
 
  //  将图像直接发送到浏览器 
响应。 ContentType =   image / jpeg; 
 oBitmap.Save（Response.OutputStream，ImageFormat.Jpeg）; 
} 
} 

积分转到： http://www.sitepoint.com/generating-asp-net-images-fly/

我发现这个.NET SDK将HTML转换为.net中的图像

几行代码需要将url转换为图像。

下载此库并尝试以下代码。< br $>


http ：//www.converthtmltoimage.com/Convert-html-to-png-in-c-sharp-net.html [ ^ ]

 WebsitesScreenshot.WebsitesScreenshot _Obj; 
 _Obj =  new  WebsitesScreenshot.WebsitesScreenshot（）; 
 WebsitesScreenshot.WebsitesScreenshot.Result _Result; 
 _Result = _Obj.CaptureWebpage（  http://www.msn.com） ; 
  if （_Result == WebsitesScreenshot。
 WebsitesScreenshot.Result.Captured）
 {
 _Obj.ImageWidth =  200 ; 
 _Obj.ImageHeight =  300 ; 
 _Obj.ImageFormat =网站截图。 
 WebsitesScreenshot.ImageFormats.PNG; 
 _Obj.SaveImage（  c：\\ msn.png）; 
} 
 _Obj.Dispose（）; 

Hi all,

I have a situation where I need to save the content in HTML div as Image in web server.

I tried to use the Graphic classes, but those could convert the Text part into Image. If I have any image inside that HTML div or any other object then I get Invalid conversion error.

I would like to find out if there's any other way to do it?

Following is the code I am using:

System.Net.WebRequest webRequest = System.Net.WebRequest.Create(url);
System.Net.WebResponse webResponse = webRequest.GetResponse() ;
System.IO.StreamReader sr = new System.IO.StreamReader(webResponse.GetResponseStream(), System.Text.Encoding.GetEncoding("UTF-8"));
content = sr.ReadToEnd();

//save to file
byte[] b = StreamFile(content );


System.IO.MemoryStream ms = new System.IO.MemoryStream(b);
System.Drawing.Image img = System.Drawing.Image.FromStream(ms,false,true);
img.Save(@"D:\pic.jpg", System.Drawing.Imaging.ImageFormat.Jpeg);

img.Dispose();
ms.Close();

Thanks for any help

解决方案

This link will help you better.

Get ASP.NET C# 2.0 Website Thumbnail Screenshot[^]

thanks

protected void Page_Load(object sender, EventArgs e)
 {
 if (IsPostBack)
 {
 //create a new Bitmap objec
 Bitmap oBitmap = new Bitmap(468, 60);
 //create a new Graphics object, which will allow us to draw on our bitmap:
 Graphics oGraphic = Graphics.FromImage(oBitmap);

 //define the background color of our dynamic image:
 String scolor = BackgroundColor.SelectedValue;

 //get the values that were posted back
 String sText = Text.Text;
 String sFont = Font.Text;
 Color oColor = Color.FromName(BackgroundColor.SelectedValue);

 // create two brushes, which will help us to draw our image.
 //The first one, oBrush, will be used to draw the background of the image:
 // second brush will be used to draw the text entered by the user
 SolidBrush oBrush = new SolidBrush(oColor);
 SolidBrush oBrushwrite = new SolidBrush(Color.White);

 //fill the image rectangle,
 oGraphic.FillRectangle(oBrush, 0, 0, 468, 60);

 //user chose a font for the text, so we pass sFont as the first parameter, and hardcode the size:
 Font oFont = new Font(sFont, 13);
 // X and Y point of text
 PointF oPoint = new PointF(5f,5f);

 //draw our text:
 oGraphic.DrawString(sText, oFont, oBrushwrite, oPoint);

 //send image directly to the browser
 Response.ContentType = "image/jpeg";
 oBitmap.Save(Response.OutputStream, ImageFormat.Jpeg);
 }
 }

Credit goes to : http://www.sitepoint.com/generating-asp-net-images-fly/

I found this .NET SDK to convert HTML to Image in .net
few lines of code require to convert url to image.
download this library and try the following code.

http://www.converthtmltoimage.com/Convert-html-to-png-in-c-sharp-net.html[^]

WebsitesScreenshot.WebsitesScreenshot _Obj;
_Obj = new WebsitesScreenshot.WebsitesScreenshot();
WebsitesScreenshot.WebsitesScreenshot.Result _Result;            
_Result = _Obj.CaptureWebpage("http://www.msn.com");
if (_Result == WebsitesScreenshot.
			WebsitesScreenshot.Result.Captured)
{
	_Obj.ImageWidth = 200;
	_Obj.ImageHeight = 300;
	_Obj.ImageFormat = WebsitesScreenshot.
		WebsitesScreenshot.ImageFormats.PNG;
	_Obj.SaveImage("c:\\msn.png");
} 
_Obj.Dispose();

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