C# WPF 如何从字节数组加载 FontFamily

# 使用C# WPF从字节数组加载FontFamily的方法

csharp
using System;
using System.Drawing.Text;
using System.IO;
using System.Runtime.InteropServices;
using System.Windows;
using System.Windows.Media;
namespace WpfFontLoadingExample
{
    public partial class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent();
            // 从字节数组加载字体
            byte[] fontData = File.ReadAllBytes("PathToYourFontFile.ttf");
            FontFamily customFont = LoadFontFromByteArray(fontData);
            // 应用字体到控件
            textBlock.FontFamily = customFont;
        }
        private FontFamily LoadFontFromByteArray(byte[] fontData)
        {
            PrivateFontCollection privateFontCollection = new PrivateFontCollection();
            
            // 分配内存并将字节数组复制到私有字体集合
            IntPtr data = Marshal.UnsafeAddrOfPinnedArrayElement(fontData, 0);
            privateFontCollection.AddMemoryFont(data, fontData.Length);
            // 获取私有字体集合中的第一个字体
            FontFamily fontFamily = new FontFamily(new Uri("pack://application:,,,/"), privateFontCollection.Families[0].Name);
            // 释放内存
            Marshal.FreeCoTaskMem(data);
            return fontFamily;
        }
    }
}