C# Get Version Number of Font

Question

How does one get the actual version number of a font in C#? In my case, I need to know if version 6.06 of the Segoe UI Symbol font is installed.

Answer 1

There is no way to see the version of a font file from within C#, you can only check installed fonts by name, so...

I would get the name and hash of the correct file and compare that to the target system:

using System.IO;
using System.Security.Cryptography;

...

const string fontFileName = "seguisym.ttf";
const string fontHash = "/O7kUQinASYq8BG6dSY4YXkXQcbCeZQOmAcaWQqPP60OcgbGpXR5+yNug0pceicfHpjxV+6sdmy1j8Np2VIbOQ==";

static bool FontIsInstalled()
{
    string fontPath = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.Fonts), fontFileName);
    if (!File.Exists(fontPath)) return false;
    using (SHA512Managed sha = new SHA512Managed())
    {
        return fontHash.Equals(Convert.ToBase64String(sha.ComputeHash(File.ReadAllBytes(fontPath))));
    }
}

Answer 2

I don't know if it was introduced more recently, but by now it's possible to get the version of a font for a specific typeface via TryGetGlyphTypeface().

Example for Segoe UI:

var segoe = new FontFamily("Segoe UI");
var typeface = new Typeface(segoe, FontStyles.Normal, FontWeights.Normal, FontStretches.Normal);
var isGlyphTypeface = typeface.TryGetGlyphTypeface(out var glyph);
if(isGlyphTypeface)
{
  Console.WriteLine(glyph.Version);
}