Steema Central

If you have a .NET 5 console application and attempt to set the font name to a non-default value, the application fails with the following exception.

Unhandled exception. SixLabors.Fonts.Exceptions.FontFamilyNotFoundException: Tahoma could not be found
at SixLabors.Fonts.FontCollection.FindInternal(String fontFamily, CultureInfo culture)
at Steema.TeeChart.Drawing.ChartFont.vur()
at Steema.TeeChart.Drawing.ChartFont.get_DrawingFont()
at Steema.TeeChart.Drawing.Graphics3DImageSharp.MeasureString(IChartFont f, String text)
at Steema.TeeChart.Drawing.Graphics3DBase.TextWidth(String text)
at Steema.TeeChart.Drawing.Graphics3DBase.get_FontSpace()
at Steema.TeeChart.Legend.Paint(IGraphics3D g, Rectangle rect, Boolean doDraw, Boolean doCalc)
at Steema.TeeChart.Chart.DoDrawLegend(Rectangle& tmp, Boolean doDraw, Boolean doCalc)
at Steema.TeeChart.Chart.DrawTitlesAndLegend(Rectangle& tmp, Boolean BeforeSeries)
at Steema.TeeChart.Chart.InternalDraw(Boolean noTools)
at Steema.TeeChart.TChart.Draw(IImageProcessingContext g, Rectangle rect)
at Steema.TeeChart.TChart.spm.pag(IImageProcessingContext s)
at SixLabors.ImageSharp.Processing.ProcessingExtensions.Mutate[TPixel](Image`1 source, Configuration configuration, Action`1 operation)
at Steema.TeeChart.TChart.Bitmap(Int32 width, Int32 height)
at Steema.TeeChart.Export.ImageExportFormat.Save(Stream stream)
at Steema.TeeChart.Export.ImageExportFormat.Save(String fileName)

Here is the code I used to reproduce the issue.

var chart = new TChart();
chart.Legend.Font.Name = "Tahoma";
var area = new Area();
area.Add(1, 2);
area.Add(2, 3);
area.Add(3, 6);
chart.Series.Add(area);
chart.Export.Image.PNG.Width = 800;
chart.Export.Image.PNG.Height = 600;
chart.Export.Image.PNG.Save("chart.png");

If I add this line, it works around the issue.

ChartFont.FontCollection.Install(@"C:\windows\fonts\Tahoma.ttf");

Is there another way to get the system fonts loaded other than iterating the file system and loading them like this?

Hello,

Manually loading the font is the current best option when using SixLabors' Font with TeeChart.

Further reference: https://github.com/SixLabors/Fonts

Regards,
Marc