Доработано сохранение состояния

BotPages.Core/Pages/StatefullPage.cs

@@ -42,7 +42,17 @@ public abstract class StatefullPage : Page
     /// </summary>
     protected async Task SaveState(PageContext ctx, CancellationToken ct)
     {
-        foreach (var prop in GetType().GetProperties(BindingFlags.Public | BindingFlags.Instance))
+        var t = GetType();
+        foreach (var prop in t.GetProperties(BindingFlags.Instance | BindingFlags.NonPublic | BindingFlags.Public))
+        {
+            var attr = prop.GetCustomAttribute<StatefullAttribute>();
+            if (attr is null) continue;
+
+            var value = prop.GetValue(this);
+            await ctx.StateStorage.SetAsync(ctx.SessionKey, attr.Key, value, ct);
+        }
+
+        foreach (var prop in t.GetFields(BindingFlags.Instance | BindingFlags.NonPublic | BindingFlags.Public))
         {
             var attr = prop.GetCustomAttribute<StatefullAttribute>();
             if (attr is null) continue;

BotPages.Core/Storage/InMemoryStateStorage.cs

@@ -19,6 +19,10 @@ public sealed class InMemoryStateStorage : IStateStorage
     /// <inheritdoc />
     public Task SetAsync<T>(CompositeSessionKey session, string key, T state, CancellationToken ct)
     {
+        if (!_store.ContainsKey(session))
+        {
+            _store[session] = new();
+        }
         _store[session][key] = state!;
         return Task.CompletedTask;
     }

Demo/Pages/DetailsPage.cs

@@ -6,7 +6,7 @@ namespace Demo.Pages;
 
 /// <summary>
 /// Страница ввода деталей заявки.
-/// Страница с параметрами и сохранением состояния.
+/// Страница с параметрами и получением состояния.
 /// </summary>
 public sealed class DetailsPage : StatefullPage<DetailsArgs>
 {

Demo/Pages/FilesPage.cs

@@ -30,7 +30,7 @@ public sealed class FilesPage : SingletonPage
         await ctx.SetStorageAsync("Request", request, ct);
 
         await new MessageBuilder(ctx)
-            .Text($"Получено файлов: {files.Count}", MessageFormat.Plain)
+            .Text($"По заявке '{request.Title}' Получено файлов: {files.Count}", MessageFormat.Plain)
             .Inline("Далее", "next")
             .SendAsync(ct);
     }