从一位前辈博客中看到的，学习并记录下。

是用wpf制作的，就是将系统的字体都显示出来，并可以选择。

前端代码：     

<Window x:Class="字体选择器.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
        xmlns:local="clr-namespace:字体选择器"
        mc:Ignorable="d"
        Title="MainWindow" Height="350" Width="525">
    <Grid ShowGridLines="True">
        <Grid.RowDefinitions>
            <RowDefinition Height="*"></RowDefinition>
            <RowDefinition Height="*"></RowDefinition>
            <RowDefinition Height="*"></RowDefinition>
            <RowDefinition Height="2*"></RowDefinition>
        </Grid.RowDefinitions>
        <Grid.ColumnDefinitions>
            <ColumnDefinition/>
            <ColumnDefinition/>
        </Grid.ColumnDefinitions>
        <ComboBox HorizontalAlignment="Center" MinWidth="200" Name="cbxfonts" SelectionChanged="fonts_SelectionChanged" Grid.ColumnSpan="2" MinHeight="30" Margin="20"></ComboBox>
        <TextBlock Grid.Row="1">中文预览：</TextBlock>
        <TextBlock Grid.Row="2"   FontFamily="{Binding Path=FontFamily,ElementName=text}" FontSize="25">你选择的字体</TextBlock>
        <TextBlock Grid.Row="1" Grid.Column="2" >英文预览：</TextBlock>
        <TextBlock Grid.Row="2" Grid.Column="2" FontSize="25" FontFamily="{Binding Path=FontFamily,ElementName=text}">You Selected Font</TextBlock>
        <Border Grid.ColumnSpan="2" Grid.Row="3">
            <DockPanel>
                <TextBlock DockPanel.Dock="Top">字体详细信息：</TextBlock>
                <StackPanel>
                    <StackPanel Orientation="Horizontal">
                        <TextBlock>字体名称：</TextBlock>
                        <TextBox Text="{Binding ElementName=text,Path=FontFamily}" Name="text"></TextBox>
                    </StackPanel>
                </StackPanel>
                <Button HorizontalAlignment="Center" VerticalAlignment="Bottom" DockPanel.Dock="Bottom">
                    <Button.Style>
                        <Style>
                            <Style.Triggers>
                                <Trigger Property="Button.IsMouseOver" Value="True">
                                    <Setter Property="Button.Foreground" Value="Blue"></Setter>
                                </Trigger>
                                <Trigger Property="Button.IsMouseOver" Value="False">
                                    <Setter Property="Button.Foreground" Value="Black"></Setter>
                                </Trigger>
                            </Style.Triggers>
                        </Style>
                    </Button.Style>
                    <Button.Template>
                        <ControlTemplate>
                            <TextBlock > 
                                <Underline>关注我的新浪微博</Underline>
                            </TextBlock>
                        </ControlTemplate>
                    </Button.Template>
                </Button>
            </DockPanel>
        </Border>
    </Grid>
</Window>

后端代码：

using System.Windows;
using System.Windows.Controls;
using System.Windows.Markup;
using System.Windows.Media;

namespace 字体选择器
{
    /// <summary>
    /// MainWindow.xaml 的交互逻辑
    /// </summary>
    public partial class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent();

            foreach (FontFamily _f in Fonts.SystemFontFamilies)
            {
                string _fontName = null;
                LanguageSpecificStringDictionary _fontDic = _f.FamilyNames;
                if (_fontDic.ContainsKey(XmlLanguage.GetLanguage("zh-cn")))
                {                
                    if (_fontDic.TryGetValue(XmlLanguage.GetLanguage("zh-cn"), out _fontName))
                    {
                        cbxfonts.Items.Add(_fontName);
                    }
                }
                else
                {                  
                    if (_fontDic.TryGetValue(XmlLanguage.GetLanguage("en-us"), out _fontName))
                    {
                        cbxfonts.Items.Add(_fontName);
                    }
                }
            }       
        }

        private void fonts_SelectionChanged(object sender, SelectionChangedEventArgs e)
        {
            text.FontFamily = new FontFamily(cbxfonts.SelectedItem.ToString());
        }

    }
}