Working ver.1.2

WpfApp1/WpfApp1/ViewRecordsWindow.xaml

@@ -13,12 +13,8 @@
             <TextBox x:Name="txtClientName" IsReadOnly="True" Background="#3D3D3D" Foreground="White" Margin="0,0,0,15"/>
 
             <TextBlock Text="Записи:" Margin="0,5" Foreground="White"/>
-            <ListBox x:Name="RecordsListBox" Height="150" Background="#2D2D2D" Foreground="White" BorderBrush="White">
-                <ListBox.ItemTemplate>
-                    <DataTemplate>
-                        
-                    </DataTemplate>
-                </ListBox.ItemTemplate>
+            <ListBox x:Name="RecordsListBox" Height="150" Background="#2D2D2D" Foreground="White" BorderBrush="White" DisplayMemberPath="DateEntry">
+               
             </ListBox>
 
             <!-- Кнопки управления -->

WpfApp1/WpfApp1/ViewRecordsWindow.xaml.cs

@@ -39,7 +39,14 @@ namespace WpfApp1
             if (File.Exists(FilePath))
             {
                 string json = File.ReadAllText(FilePath);
-                _allEntries = JsonSerializer.Deserialize<List<Entry>>(json) ?? new List<Entry>();
+
+                // Добавляем настройки
+                var options = new JsonSerializerOptions
+                {
+                    PropertyNameCaseInsensitive = true
+                };
+
+                _allEntries = JsonSerializer.Deserialize<List<Entry>>(json, options) ?? new List<Entry>();
             }
             RefreshList();
         }