通过InstalledFontCollection类的Families属性来获取系统安装的所有字体
ListItemCollection TextStyle = new ListItemCollection();
System.Drawing.Text.InstalledFontCollection CollectionFont = new System.Drawing.Text.InstalledFontCollection();
FontFamily[] Familys = CollectionFont.Families;
for(int i = 0 ; i < Familys.Length ; i++)
{
TextStyle.Add(Familys[i].Name);
}
DropDownList5.DataSource = TextStyle;
DropDownList5.DataBind();