このコードを使用してください!!!
const string latex = @"\frac{2+2}{2}";
const string fileName = @"formula.png";
File.Open(fileName, FileMode.OpenOrCreate).Close();
var parser = new WpfMath.TexFormulaParser();
var formula = parser.Parse(latex);
var renderer = formula.GetRenderer(WpfMath.TexStyle.Display, 20.0, "Arial");
var bitmapSource = renderer.RenderToBitmap(0, 0);
var encoder = new System.Windows.Media.Imaging.PngBitmapEncoder();
encoder.Frames.Add(System.Windows.Media.Imaging.BitmapFrame.Create(bitmapSource));
using (var target = new FileStream(fileName, FileMode.Create))
{
encoder.Save(target);
}
pictureBox2.Image = Image.FromFile(fileName);