WPFtestingsvgs.cs

using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;
using System.Xml;
using System.Xml.XPath;

namespace SKIASVGExampleWPFNETFr
{
    /// <summary>
    /// Interaction logic for MainWindow.xaml
    /// </summary>
    public partial class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent();
            this.Loaded += MainWindow_Loaded;
        }

        SkiaSharp.Extended.Svg.SKSvg sksvg = new SkiaSharp.Extended.Svg.SKSvg();

        private void MainWindow_Loaded(object sender, RoutedEventArgs e)
        {
            var document = new XmlDocument();
            document.Load("Assets/Firefox.75.0.svg");

            XmlNode svg = null;
            foreach (XmlNode svgchild in document.ChildNodes)
            {
                if (svgchild.Name is "svg")
                {
                    svg = svgchild;
                    break;
                }
            }

            if (svg != null)
            {
                foreach (XmlNode child in svg.ChildNodes)
                {
                    if (child.Name is "path") // or another to add here
                    {
                        if (child.Attributes["fill"] != null)
                        {
                            //Trying to solve Firefox.75.0.svg
                            var fillattrib = child.Attributes["fill"];
                            var fill = fillattrib.Value;

                            XmlAttribute style = document.CreateAttribute("style");
                            //style.Value = $"fill:{fill}";
                            style.Value = $"fill:#ff00ff";

                            child.Attributes.Append(style);
                            child.Attributes.Remove(fillattrib);
                        }
                        if (child.Attributes["d"] != null)
                        {
                            ////Trying to break wikipedia.svg
                            var dattrib = child.Attributes["d"];
                            var d = dattrib.Value;
                            d = d.Replace(",", " ");
                            child.Attributes["d"].Value = d;

                        }

                    }
                }
            }

            using (var reader = new XmlNodeReader(document))
            {
                sksvg.Load(reader);
            }
                
            SkiaCanvas.InvalidateVisual();

        }

        private void SkiaCanvas_PaintSurface(object sender, SkiaSharp.Views.Desktop.SKPaintSurfaceEventArgs e)
        {
            if (sksvg != null && sksvg.Picture != null)
            {
                e.Surface.Canvas.DrawPicture(sksvg.Picture);
            }
        }
    }
}