我怎么可能会DataVisualization.Charting.Chart到iTextSharp.text.Image的形象，而不写入文件？

问题描述

我在写一个软件测量数据的可视化。为此，我使用System.Windows.Forms.DataVisualization.Charting.Chart，我知道我可以chartObj.SaveImage获得的图像显示，将其存储到文件中。

I'm writing a piece of software for visualization of measurement data. For this I use System.Windows.Forms.DataVisualization.Charting.Chart and I do know that I can get the shown image by chartObj.SaveImage to store it to a file.

我的软件应具备哪些图片应该包括一个PDF导出。对于这一点，我使用iTextSharp的。同样，我知道如何把我已经保存在一个文件分割成iTextSharp.text.Image.GetInstance PDF格式的图片。

My software shall have a PDF export in which the picture should be included. For this, I'm using iTextSharp. Again, I do know how to put a picture which I have stored in a file into the PDF by iTextSharp.text.Image.GetInstance.

所以，现在我可以拿图表的图片，把它放在一个文件（如.jpg文件），并重新加载此文件把它放在我的PDF。现在我正在寻找一个不错的解决方案，得到的图片到PDF，而不将其存储到一个文件中，可能通过一个Stream或类似的东西。我试过很长一段时间，但到现在为止我没有成功。我认为像

So by now I am able to take the picture of the chart, put it to a file (e.g. a .jpg file) and load this file again to put it in my PDF. Now I'm looking for a nice solution to get the picture into the PDF without storing it into a file, maybe through a Stream or something like that. I've tried quite some time, but until now I didn't succeed. I've thought of something like

Stream imageStream = image of chartObj;
iTextSharp.text.Image picture = iTextSharp.text.Image.GetInstance(imageStream);

据我了解，我无法在把从chartObj图片到一个流，而不是文件。如果我有这个，我想我可以通过加载的iTextSharp.text.Image.GetInstance流。

As far as I understand, I fail in putting the picture from the chartObj into a Stream instead of a file. If I had this, I guess I could load the Stream via iTextSharp.text.Image.GetInstance.

有没有人一些帮助，你可以提供？猜猜它并不难，但我是新的C＃和也iText的，所以我只是有点stucked这里。

Has anyone some help you could offer? Guess it's not that difficult, but I'm new to C# and also to iText, so I'm just a bit stucked here.

在此先感谢每想你对此

安娜

推荐答案

SaveImage到一个MemoryStream！

SaveImage to a MemoryStream:

using (var chartimage = new MemoryStream())
  {
    chart.SaveImage(chartimage, ChartImageFormat.Png);
    return chartimage.GetBuffer();
  }

从：
的 Microsoft图表控件与iTextSharp的和ASP.NET MVC

From:Microsoft Chart Controls to PDF with iTextSharp and ASP.NET MVC

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