How to Find installed font-family ?

using System.Text;
using System.Drawing.Text;
using  System.Drawing;

protected void Page_Load(object sender, EventArgs e)
{
    InstalledFontCollection fontList = new InstalledFontCollection();
    StringBuilder sb = new StringBuilder();

    foreach (FontFamily Family in fontList.Families)
        sb.Append(Family.Name + "<br/>");

    Response.Write(sb.ToString());
}