Program.cs

using System;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace G19Bilibili
{
    internal static class Program
    {
        [STAThread]
        static void Main()
        {
            Application.SetHighDpiMode(HighDpiMode.SystemAware);
            Application.EnableVisualStyles();
            Application.SetCompatibleTextRenderingDefault(false);

            Application.SetUnhandledExceptionMode(UnhandledExceptionMode.CatchException);
            Application.ThreadException += (s, e) => ShowFatal("UI 线程异常", e.Exception);
            AppDomain.CurrentDomain.UnhandledException += (s, e) =>
            {
                var ex = e.ExceptionObject as Exception ?? new Exception("Unknown");
                ShowFatal("非 UI 线程异常", ex);
            };
            TaskScheduler.UnobservedTaskException += (s, e) =>
            {
                e.SetObserved();
                ShowFatal("任务线程异常", e.Exception);
            };

            try
            {
                using var login = new BiliLoginForm();
                if (login.ShowDialog() != DialogResult.OK) return;

                Application.Run(new BiliPlayerForm(login.UserDataFolder));
            }
            catch (Exception ex)
            {
                ShowFatal("启动失败", ex);
            }
        }

        private static void ShowFatal(string title, Exception ex)
        {
            try
            {
                var text = $"{title}\r\n\r\n{ex}";
                try { System.IO.File.WriteAllText(System.IO.Path.Combine(AppContext.BaseDirectory, "last_error.txt"), text); } catch { }
                MessageBox.Show(text, "程序异常", MessageBoxButtons.OK, MessageBoxIcon.Error);
            }
            catch { }
        }
    }
}