如何在c#中使用iText 7将SVG图形添加​​到pdf文档？

Question

I'm working on generator of stickers, using iText7 C#. The look of the final sticker is to look like this: https://drive.google.com/open?id=16q_sMP5H0eiVhq85DDRGgE-CDlX3fOB5

I've problem with adding SVG graphic to pdf document. I have graphics in above link: https://drive.google.com/open?id=1bw2E5hVhKjjwYqn6aGbe_tNqPmYmXu4b https://drive.google.com/open?id=1lEqhrh2zAlOGlA1WMKfGtuhue6TBtcbc

I can not find any practical example on the Internet how to read an SVG file and add to a pdf document using iText7.

Can anyone help me with this topic?

Answer 1

Using the latest release 7.1.4, you would add an SVG to a document like this:

public static void Convert(Stream svg, Stream pdfOutputStream) {
        SvgConverter.CreatePdf(svg, pdfOutputStream);
}

There are many other possibilities in this class to convert to PDF, but this is the easiest method to use.

Answer 2

I use this code to add SVG graphic to pdf document:

string enc_text = File.ReadAllText(SVG);                            

SvgConverter.DrawOnCanvas(enc_text, pdfCanvas);

but it's work only for simple SVG graphics like below https://www.w3schools.com/graphics/tryit.asp?filename=trysvg_ellipse3

don't work for this SVG created and saved in CorelDraw: https://drive.google.com/file/d/1bw2E5hVhKjjwYqn6aGbe_tNqPmYmXu4b/view is that possible to draw this graphic on pdf using itext7 C#?

Answer 3

This is Code:

public const String SVG = @"C:\Users\Desktop\logo.svg";

....

string enc_text = File.ReadAllText(SVG);                            
SvgConverter.DrawOnCanvas(enc_text, pdfCanvas);

I tried three times and below are results:

Attempt 1 SVG https://drive.google.com/open?id=1ibg_KwvviRQ4b9suniZwBJRdBdgM02te PDF - the result is: OK: https://drive.google.com/open?id=1DGGLUowlEYpAydbWTTSJORVxP67LGrf5

Attempt 2 SVG: https://drive.google.com/open?id=1UHASgAxAaPONIo9fc6VZ9q4cjjK-uOzj PDF - the result is: half well https://drive.google.com/open?id=1yzLF-fQQcOQvEXVyDN-UuK0YVeHOn5B_

Attempt 3 SVG https://drive.google.com/open?id=1ZNLDkc2x4WvHouKw-A4AgRrDuQ2pAoDE PDF - the result is: no logo https://drive.google.com/open?id=1nJVNT5oAMoI8HuUURZQv1yhu7IbFoI6H

SVG graphics are well displayed in browsers, but iText can not draw them properly, especially those complicated