void Main()
{
    DrawTextToPng("Hogemoge-fugaf@-!!!$&'&piyo_-=hiogfew", 10);
}

public void DrawTextToPng(string text, int xPadding = 0)
{
    // draw some text
    var paint = new SKPaint
    {
        Color = SKColors.White,
        IsAntialias = true,
        Style = SKPaintStyle.Fill,
        TextAlign = SKTextAlign.Center,
        TextSize = 24
    };
    var width = paint.MeasureText(text);

    var info = new SKImageInfo((int)width + xPadding, 50);
    using (var surface = SKSurface.Create(info))
    {
        var canvas = surface.Canvas;

        // make sure the canvas is blank
        canvas.Clear(SKColors.Black);

        var coord = new SKPoint(info.Width / 2, (info.Height + paint.TextSize) / 2);
        canvas.DrawText(text, coord, paint);

        // save the file
        using (var image = surface.Snapshot())
        using (var data = image.Encode(SKEncodedImageFormat.Png, 100))
        using (var stream = File.OpenWrite("output.png"))
        {
            data.SaveTo(stream);
        }
    }
}