想法是主程序尽量的简单，其他的尽量按需调用。

所以把Demo这个主程序的内容大部分移到LunZi.Common项目去了。

  1. Demo的MauiProgram
      public static MauiApp CreateMauiApp()
  {

      try
      {
          var assembly = AssemblyLoadContext.Default.LoadFromAssemblyPath(@"C:\Plugin\windows\LunZi.Common.dll");

          var type = assembly.GetType("LunZi.Common.MauiProgram");
          var method = type!.GetMethod("CreateMauiApp", BindingFlags.Static | BindingFlags.Public);
          var app = (MauiApp)method!.Invoke(null, null)!;
          return app;
      }
      catch (Exception ex)
      {

          var builder = MauiApp.CreateBuilder();
          builder.UseMauiApp<App>();

          var msg = ex.Message + "\r\n" + ex.StackTrace;
          if (ex.InnerException != null)
              msg += "\r\n-----------InnerException--------------------\r\n" + ex.InnerException.ToString();

          builder.Services.AddSingleton(ii => new MainPage(msg));
          return builder.Build();
      }
  }
  2. LunZi.Common的MauiProgram
      public static class MauiProgram
  {
      public static List<string> AssemblyNames { get; set; } = new();
      public static MauiApp CreateMauiApp()
      {
          AppDomain.CurrentDomain.AssemblyResolve += CurrentDomain_AssemblyResolve;

          return Create();
      }

      private static MauiApp Create()
      {
          var builder = MauiApp.CreateBuilder();
          builder
              .UseMauiApp<App>()
              .UseMauiCommunityToolkit()
              .UseMauiCommunityToolkitMarkup()
          .ConfigureFonts(fonts =>
          {
              fonts.AddFont("OpenSans-Regular.ttf", "OpenSansRegular");
              fonts.AddFont("OpenSans-Semibold.ttf", "OpenSansSemibold");
          });


          builder.AddLunZiService();
          var app = builder.Build();
          app.InitializeLunZi();
          return app;
      }


      private static Assembly? CurrentDomain_AssemblyResolve(object? sender, ResolveEventArgs args)
      {
          var name = args.Name.Split(',')[0].Trim();

          string fullName = Path.Combine(@"c:\plugin\packages", name.EndsWith(".resources") ? Thread.CurrentThread.CurrentCulture.Name : "", name + ".dll");
          if (File.Exists(fullName))
          {
              AssemblyNames.Add(name);
              return AssemblyLoadContext.Default.LoadFromAssemblyPath(fullName);
          }
          else
              return default;
      }
  }

以后Demo将基本不动，只要修改LunZi.Common，增加其他类库。想着公司刚好要开发Maui的程序，接一下就以公司产品为例，折腾折腾这个插件开发。

哦，我公司是开发酒店自助入住程序的，所以将会有这么一些插件

image