Обновление отображения

Pf2eViewer/DatabaseViewerControl.cs

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+using Pf2eModel;
+using Pf2eModel.Model.Base;
+using Pf2eModel.Model.Common.I18n;
+using Pf2eModel.Model.Enum;
+
+namespace Pf2eViewer;
+
+public partial class DatabaseViewerControl : UserControl
+{
+    public readonly Pf2eDbContext Context = new();
+
+    private int _perPage = 30;
+
+    private int _page = 1;
+
+    private EntityType _type;
+
+    public int PerPage
+    {
+        get => _perPage;
+        set
+        {
+            _perPage = value;
+            UpdateView();
+        }
+    }
+
+    public int Page
+    {
+        get => _page;
+        set
+        {
+            _page = value;
+            UpdateView();
+        }
+    }
+
+    public int Count { get; private set; }
+
+    public int MaxPage => Convert.ToInt32(Math.Ceiling(1.0 * Count / PerPage));
+
+    public EntityView CurrentEntity { get; private set; } = null!;
+
+    public EntityType Type
+    {
+        get => _type;
+        set
+        {
+            _type = value;
+            UpdateView();
+        }
+    }
+
+    internal bool _updating = false;
+
+    public DatabaseViewerControl()
+    {
+        InitializeComponent();
+
+        BindingNavigator.BindingSource = DbBindingSource;
+        DataGridView.AutoGenerateColumns = true;
+        DataGridView.SelectionMode = DataGridViewSelectionMode.FullRowSelect;
+    }
+
+    private void DatabaseViewerControl_Load(object sender, EventArgs e)
+    {
+        UpdateView();
+    }
+
+    private void BindingNavigator_RefreshItems(object sender, EventArgs e)
+    {
+        if (_updating)
+        {
+            return;
+        }
+
+        Page = (int)(BindingNavigator?.BindingSource?.Current ?? 1);
+        UpdateView();
+    }
+
+    public void UpdateView()
+    {
+        _updating = true;
+
+        IQueryable<Entity> query = Context.Entities.Where(e =>
+            e.Type == Type
+            && (
+                // ReSharper disable once EntityFramework.UnsupportedServerSideFunctionCall
+                SearchTextBox.Text == ""
+                || Pf2eDbContext.LocaleSearch(e.Name, SearchTextBox.Text)
+            )
+        );
+
+        Count = query.Count();
+
+        PagesBindingSource.DataSource = Enumerable.Range(1, MaxPage).ToList();
+        BindingNavigator.BindingSource = PagesBindingSource;
+
+        DbBindingSource.DataSource = query
+            .Skip((Page - 1) * PerPage)
+            .Take(PerPage)
+            .Select(e => new EntityGridRow(e))
+            .ToList();
+
+        if (DataGridView.Rows.Count > 0)
+        {
+            DataGridView.Rows[0].Selected = true;
+        }
+        DataGridView.Update();
+
+        _updating = false;
+    }
+
+    private void DataGridView_RowStateChanged(object sender, DataGridViewRowStateChangedEventArgs e)
+    {
+        if (DataGridView.SelectedRows.Count == 0)
+        {
+            return;
+        }
+
+        EntityGridRow data = (EntityGridRow)DataGridView.SelectedRows[0].DataBoundItem;
+        CurrentEntity = new(Context, Type, data.Id);
+
+        EntityChange?.Invoke(CurrentEntity);
+    }
+
+    public delegate void EntityChangeHandler(EntityView newEntity);
+
+    public event EntityChangeHandler? EntityChange;
+
+    internal class EntityGridRow(Entity e)
+    {
+        public int Id { get; set; } = e.Id;
+
+        public string Name { get; set; } = e.Name[LocaleType.English];
+
+        public EntityRarity Rarity { get; set; } = e.Rarity;
+
+        private readonly Entity _e = e;
+
+        public Entity GetEntity() => _e;
+    }
+}