WPF Prism IModule,IEventAggregaor GetEvent Publish Subscribe

Install-Package Prism.DryIOC;
Install-Package Prism.Wpf;

//BookModule
using BookModule.Services;
using BookModule.ViewModels;
using BookModule.Views;
using System;
using System.Collections.Generic;
using System.Text;

namespace BookModule
{
    public class BookModule : IModule
    {
        private IRegionManager regionManager;

        public BookModule(IRegionManager regionManagerValue)
        {
            regionManager = regionManagerValue;
        }

        public void OnInitialized(IContainerProvider containerProvider)
        {
            regionManager.RegisterViewWithRegion("BooksRegion", typeof(BookView));
        }

        public void RegisterTypes(IContainerRegistry containerRegistry)
        {
            containerRegistry.Register<IIDService, IDService>();
            containerRegistry.Register<INameService, NameService>();
            containerRegistry.Register<IISBNService, ISBNService>();
            containerRegistry.RegisterForNavigation<BookView, BookViewViewModel>("BookView");
        }
    }
}


//UserModule
using System;
using System.Collections.Generic;
using System.Text;
using UserModule.ViewModels;
using UserModule.Views;

namespace UserModule
{
    public class UserModule : IModule
    {
        IRegionManager regionManager;
        public UserModule(IRegionManager regionManagerValue)
        {
            regionManager = regionManagerValue;
        }

        public void OnInitialized(IContainerProvider containerProvider)
        {
            //regionManager.RegisterViewWithRegion("UserRegion",typeof(UserView));
        }

        public void RegisterTypes(IContainerRegistry containerRegistry)
        {
            containerRegistry.RegisterForNavigation<UserView, UserViewModel>("UserView");
        }
    }
}


//App.xaml.cs
using BookModule;
using BookModule.Services;
using BookModule.ViewModels;
using BookModule.Views;
using Prism.Commands;
using Prism.Ioc;
using Prism.Modularity;
using System.Configuration;
using System.Data;
using System.Windows;
using UserModule;
using UserModule.ViewModels;
using UserModule.Views;

namespace WpfApp22
{
    /// <summary>
    /// Interaction logic for App.xaml
    /// </summary>
    public partial class App : PrismApplication
    {
        protected override Window CreateShell()
        {
            return Container.Resolve<ShellView>();
        }

        protected override void OnInitialized()
        {
            base.OnInitialized();
            var regionManager = Container.Resolve<IRegionManager>();
            regionManager.RequestNavigate("BookRegion", "BookView");
            regionManager.RequestNavigate("UserRegion", "UserView");
        }

        protected override void RegisterTypes(IContainerRegistry containerRegistry)
        {         
            containerRegistry.RegisterForNavigation<ShellView, ShellViewModel>();
        }

        protected override void ConfigureModuleCatalog(IModuleCatalog moduleCatalog)
        {
            base.ConfigureModuleCatalog(moduleCatalog);
            moduleCatalog.AddModule<BookModule.BookModule>();
            moduleCatalog.AddModule<UserModule.UserModule>();
        }
    }

}

using System;
using System.Collections.Generic;
using System.Text;

namespace BookModule.Models
{
    public class StatusUpdatedEvent : PubSubEvent<string>
    {
    }
}


public class BookViewViewModel : BindableBase
{
    IIDService idService;
    IISBNService isbnService;
    INameService nameService;
    IEventAggregator eventAggregator;

    public BookViewViewModel(IIDService idServiceValue, IISBNService isbnServiceValue,
        INameService nameServiceValue, IEventAggregator eventAggregatorValue)
    {
        idService = idServiceValue;
        isbnService = isbnServiceValue;
        nameService = nameServiceValue;
        eventAggregator = eventAggregatorValue;
    }

    public void UpdateMainStatus(string mainStatusValue)
    {
        eventAggregator.GetEvent<StatusUpdatedEvent>().Publish(mainStatusValue);
    }
}


public class ShellViewModel : BindableBase
{
    private IEventAggregator eventAggregator;
    public ShellViewModel(IEventAggregator eventAggregatorValue)
    {
        eventAggregator = eventAggregatorValue;
        eventAggregator.GetEvent<StatusUpdatedEvent>().Subscribe(OnStatusUpdated);
        MainStatus = "Loading...";
        MainStr = $"In Main view,now is {DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss")}";

        System.Timers.Timer tmr = new System.Timers.Timer();
        tmr.Interval = 1000;
        tmr.Elapsed += Tmr_Elapsed;
        tmr.Start();
    }

    private void OnStatusUpdated(string statusValue)
    {
        MainStatus = statusValue;
    }

    public void OnUnload()
    {
        eventAggregator.GetEvent<StatusUpdatedEvent>().Unsubscribe(OnStatusUpdated);
    }
}

//Main
//App.xaml
<prism:PrismApplication x:Class="WpfApp22.App"
             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
             xmlns:local="clr-namespace:WpfApp22"
             xmlns:prism="http://prismlibrary.com/">
</prism:PrismApplication>


//App.xaml.cs
using BookModule;
using BookModule.Services;
using BookModule.ViewModels;
using BookModule.Views;
using Prism.Commands;
using Prism.Ioc;
using Prism.Modularity;
using System.Configuration;
using System.Data;
using System.Windows;
using UserModule;
using UserModule.ViewModels;
using UserModule.Views;

namespace WpfApp22
{
    /// <summary>
    /// Interaction logic for App.xaml
    /// </summary>
    public partial class App : PrismApplication
    {
        protected override Window CreateShell()
        {
            return Container.Resolve<ShellView>();
        }

        protected override void OnInitialized()
        {
            base.OnInitialized();
            var regionManager = Container.Resolve<IRegionManager>();
            regionManager.RequestNavigate("BookRegion", "BookView");
            regionManager.RequestNavigate("UserRegion", "UserView");
        }

        protected override void RegisterTypes(IContainerRegistry containerRegistry)
        {         
            containerRegistry.RegisterForNavigation<ShellView, ShellViewModel>();
        }

        protected override void ConfigureModuleCatalog(IModuleCatalog moduleCatalog)
        {
            base.ConfigureModuleCatalog(moduleCatalog);
            moduleCatalog.AddModule<BookModule.BookModule>();
            moduleCatalog.AddModule<UserModule.UserModule>();
        }
    }

}


//MainWindow.xaml
<Window x:Class="WpfApp22.ShellView"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
        xmlns:prism="http://prismlibrary.com/"
        prism:ViewModelLocator.AutoWireViewModel="True"
        WindowState="Maximized"
        HorizontalAlignment="Stretch"
        VerticalAlignment="Stretch"
        xmlns:local="clr-namespace:WpfApp22"
        mc:Ignorable="d"
        Title="ShellView" Height="450" Width="800">
    <Grid>
        <Grid.RowDefinitions>
            <RowDefinition Height="Auto"/>
            <RowDefinition Height="*"/>
            <RowDefinition Height="Auto"/>
        </Grid.RowDefinitions>
        <Grid.ColumnDefinitions>
            <ColumnDefinition/>
            <ColumnDefinition/>
        </Grid.ColumnDefinitions>
        <TextBlock Grid.Row="0" Grid.Column="0" Grid.ColumnSpan="2"
                   Text="{Binding MainStr}"  FontSize="50" />
        <ContentControl prism:RegionManager.RegionName="BookRegion"
                        Grid.Row="1"
                        Grid.Column="0"
                        VerticalAlignment="Stretch"
                        HorizontalAlignment="Stretch"/>
        
        <ContentControl prism:RegionManager.RegionName="UserRegion"
                Grid.Row="1"
                Grid.Column="1"
                VerticalAlignment="Stretch"
                HorizontalAlignment="Stretch"/>
        
        <TextBlock Grid.Row="2" Grid.Column="0" Grid.ColumnSpan="2"
           Text="{Binding MainStatus}"  FontSize="50" />
    </Grid>
</Window>

//MainViewModel.cs
using BookModule.Models;
using BookModule.ViewModels;
using System;
using System.Collections.Generic;
using System.Text;

namespace WpfApp22
{
    public class ShellViewModel : BindableBase
    {
        private IEventAggregator eventAggregator;
        public ShellViewModel(IEventAggregator eventAggregatorValue)
        {
            eventAggregator = eventAggregatorValue;
            eventAggregator.GetEvent<StatusUpdatedEvent>().Subscribe(OnStatusUpdated);
            MainStatus = "Loading...";
            MainStr = $"In Main view,now is {DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss")}";

            System.Timers.Timer tmr = new System.Timers.Timer();
            tmr.Interval = 1000;
            tmr.Elapsed += Tmr_Elapsed;
            tmr.Start();
        }

        private void OnStatusUpdated(string statusValue)
        {
            MainStatus = statusValue;
        }

        public void OnUnload()
        {
            eventAggregator.GetEvent<StatusUpdatedEvent>().Unsubscribe(OnStatusUpdated);
        }

        private void Tmr_Elapsed(object? sender, System.Timers.ElapsedEventArgs e)
        {
            MainStr = $"In Main view,now is {DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss")}";
        }

        private string mainStr;
        public string MainStr
        {
            get
            {
                return mainStr;
            }
            set
            {
                SetProperty(ref mainStr, value);
            }
        }


        private string mainStatus;
        public string MainStatus
        {
            get
            {
                return mainStatus;
            }
            set
            {
                SetProperty(ref mainStatus, value);
            }
        }

        public Action<string> UpdateMainStatusAction => UpdateMainStatus;

        private void UpdateMainStatus(string statusValue)
        {
            MainStatus = statusValue;
        }
    }
}


//ModuleA
using System;
using System.Collections.Generic;
using System.Text;
using System.Windows.Media;

namespace BookModule.Models
{
    public class Book
    {
        public int Id { get; set; }
        public string Name { get; set; }
        public string Author { get; set; }
        public string Title {  get; set; }
        public string Topic {  get; set; }
        public string ISBN {  get; set; }
        public ImageSource ImgSource { get; set; }
    }
}

using System;
using System.Collections.Generic;
using System.Text;

namespace BookModule.Models
{
    public class StatusUpdatedEvent : PubSubEvent<string>
    {
    }
}


using System;
using System.Collections.Generic;
using System.Text;

namespace BookModule.Services
{
    public interface IIDService
    {
        int GetID();
    }

    public class IDService:IIDService
    {
        int id = 0;

        public int GetID()
        {
            return Interlocked.Increment(ref id);
        }
    }
}


using System;
using System.Collections.Generic;
using System.Text;

namespace BookModule.Services
{
    public interface IISBNService
    {
        string GetISBN();
    }

    public class ISBNService : IISBNService
    {
        int idx = 0;
        public string GetISBN()
        {
            return $"ISBN_{Interlocked.Increment(ref idx)}_{Guid.NewGuid():N}";
        }
    }
}
using System;
using System.Collections.Generic;
using System.Text;

namespace BookModule.Services
{
    public interface INameService
    {
        string GetName();
    }
    public class NameService:INameService
    {
        int idx = 0;

        public string GetName()
        {
            return $"Name_{++idx}";
        }
    }
}
using BookModule.Models;
using BookModule.Services;
using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.IO;
using System.Text;
using System.Windows.Media;
using System.Windows.Media.Imaging;

namespace BookModule.ViewModels
{
    public class BookViewViewModel : BindableBase
    {
        IIDService idService;
        IISBNService isbnService;
        INameService nameService;
        IEventAggregator eventAggregator;

        public BookViewViewModel(IIDService idServiceValue, IISBNService isbnServiceValue,
            INameService nameServiceValue, IEventAggregator eventAggregatorValue)
        {
            idService = idServiceValue;
            isbnService = isbnServiceValue;
            nameService = nameServiceValue;
            eventAggregator = eventAggregatorValue;
        }

        public void UpdateMainStatus(string mainStatusValue)
        {
            eventAggregator.GetEvent<StatusUpdatedEvent>().Publish(mainStatusValue);
        }

        public async Task InitBooksCollection()
        {
            var imgDir = @"D:\C\WpfApp22\BookModule\Images\";
            if (!Directory.Exists(imgDir))
            {
                return;
            }

            var imgs = Directory.GetFiles(imgDir);
            if (imgs == null || !imgs.Any())
            {
                return;
            }

            int imgsCount = imgs.Count();
            BooksCollection = new ObservableCollection<Book>();
            List<Book> booksList = new List<Book>();
            await Task.Run(async () =>
            {
                for (int i = 1; i < 1000001; i++)
                {
                    booksList.Add(new Book()
                    {
                        Id = idService.GetID(),
                        Name = nameService.GetName(),
                        ISBN = isbnService.GetISBN(),
                        Title = $"Title_{i}",
                        Topic = $"Topic_{i}",
                        Author = $"Author_{i}",
                        ImgSource = GetImgSourceViaUrl(imgs[i % imgsCount])
                    });

                    if (i % 1000 == 0)
                    {
                        await PopulateBooksCollectionAsync(booksList);
                    }
                }
                if (booksList.Any())
                {
                    await PopulateBooksCollectionAsync(booksList);
                }
            });
        }

        private async Task PopulateBooksCollectionAsync(List<Book> booksList)
        {
            var tempList = booksList.ToList();
            booksList.Clear();
            await System.Windows.Application.Current.Dispatcher.InvokeAsync(() =>
            {
                foreach (var bk in tempList)
                {
                    BooksCollection.Add(bk);
                }
                UpdateMainStatus($"Loaded {BooksCollection.Count} items!");
            }, System.Windows.Threading.DispatcherPriority.Background);
        }

        private ImageSource GetImgSourceViaUrl(string imgUrl)
        {
            BitmapImage bmi = new BitmapImage();
            bmi.BeginInit();
            bmi.UriSource = new Uri(imgUrl, UriKind.RelativeOrAbsolute);
            bmi.EndInit();
            bmi.Freeze();
            return bmi;
        }

        private ObservableCollection<Book> booksCollection;
        public ObservableCollection<Book> BooksCollection
        {
            get
            {
                return booksCollection;
            }
            set
            {
                SetProperty(ref booksCollection, value);
            }
        }

        private double gridWidth;
        public double GridWidth
        {
            get
            {
                return gridWidth;
            }
            set
            {
                SetProperty(ref gridWidth, value);
            }
        }

        private double gridHeight;
        public double GridHeight
        {
            get
            {
                return gridHeight;
            }
            set
            {
                SetProperty(ref gridHeight, value);
            }
        }
    }
}
<UserControl x:Class="BookModule.Views.BookView"
             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 
             xmlns:d="http://schemas.microsoft.com/expression/blend/2008"             
             xmlns:local="clr-namespace:BookModule.Views"
             xmlns:prism="http://prismlibrary.com/"
             VerticalAlignment="Stretch"
             HorizontalAlignment="Stretch"
             prism:ViewModelLocator.AutoWireViewModel="True">
    <Grid>
        <ListBox ItemsSource="{Binding BooksCollection,Mode=TwoWay,UpdateSourceTrigger=PropertyChanged}"
                    VirtualizingPanel.IsVirtualizing="True"
                    VirtualizingPanel.VirtualizationMode="Recycling"
                    VirtualizingPanel.CacheLength="2,2"
                    VirtualizingPanel.CacheLengthUnit="Item"
                    ScrollViewer.IsDeferredScrollingEnabled="True"
                    ScrollViewer.CanContentScroll="True">
            <ListBox.ItemTemplate>
                <DataTemplate>
                    <Grid Width="{Binding DataContext.GridWidth,RelativeSource={RelativeSource AncestorType=UserControl}}"
                          Height="{Binding DataContext.GridHeight,RelativeSource={RelativeSource AncestorType=UserControl}}"
                          >
                        <Grid.Background>
                            <ImageBrush ImageSource="{Binding ImgSource}"
                                        Stretch="UniformToFill"/>
                        </Grid.Background>
                        <Grid.Resources>
                            <Style TargetType="{x:Type TextBlock}">
                                <Setter Property="HorizontalAlignment" Value="Center"/>
                                <Setter Property="VerticalAlignment" Value="Center"/>
                                <Setter Property="FontSize" Value="20"/>
                                <Style.Triggers>
                                    <Trigger Property="IsMouseOver" Value="True">
                                        <Setter Property="FontSize" Value="30"/>
                                        <Setter Property="Foreground" Value="Red"/>
                                    </Trigger>
                                </Style.Triggers>
                            </Style>
                        </Grid.Resources>
                        <Grid.RowDefinitions>
                            <RowDefinition/>
                            <RowDefinition/>
                        </Grid.RowDefinitions>
                        <Grid.ColumnDefinitions>
                            <ColumnDefinition/>
                            <ColumnDefinition/>
                            <ColumnDefinition/>
                            <ColumnDefinition/>
                            <ColumnDefinition/>
                        </Grid.ColumnDefinitions>
                        <TextBlock Grid.Row="0" Grid.Column="0" Text="{Binding Id}"/>
                        <TextBlock Grid.Row="0" Grid.Column="1" Text="{Binding Name}"/>
                        <TextBlock Grid.Row="0" Grid.Column="2" Text="{Binding Author}"/>
                        <TextBlock Grid.Row="0" Grid.Column="3" Text="{Binding Title}"/>
                        <TextBlock Grid.Row="0" Grid.Column="4" Text="{Binding Topic}"/>
                        <TextBlock Grid.Row="1" Grid.Column="0" Grid.ColumnSpan="5" Text="{Binding ISBN}"/>
                    </Grid>
                </DataTemplate>
            </ListBox.ItemTemplate>
        </ListBox>
    </Grid>
</UserControl>


using BookModule.ViewModels;
using System;
using System.Collections.Generic;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;

namespace BookModule.Views
{
    /// <summary>
    /// Interaction logic for BookView.xaml
    /// </summary>
    public partial class BookView : UserControl
    {
        public BookView()
        {
            InitializeComponent();
            this.SizeChanged += (s, e) =>
            {
                if (this.DataContext is BookViewViewModel bkVM)
                {
                    bkVM.GridWidth = this.ActualWidth;
                    bkVM.GridHeight = this.ActualHeight;
                }
            };
            this.Loaded += async (s, e) =>
            {
                if (this.DataContext is BookViewViewModel bkVM)
                {
                    await bkVM.InitBooksCollection();
                }
            };
        }

        private async Task BookView_Loaded(object sender, RoutedEventArgs e)
        {
            
        }
    }
}
using BookModule.Services;
using BookModule.ViewModels;
using BookModule.Views;
using System;
using System.Collections.Generic;
using System.Text;

namespace BookModule
{
    public class BookModule : IModule
    {
        private IRegionManager regionManager;

        public BookModule(IRegionManager regionManagerValue)
        {
            regionManager = regionManagerValue;
        }

        public void OnInitialized(IContainerProvider containerProvider)
        {
            regionManager.RegisterViewWithRegion("BooksRegion", typeof(BookView));
        }

        public void RegisterTypes(IContainerRegistry containerRegistry)
        {
            containerRegistry.Register<IIDService, IDService>();
            containerRegistry.Register<INameService, NameService>();
            containerRegistry.Register<IISBNService, ISBNService>();
            containerRegistry.RegisterForNavigation<BookView, BookViewViewModel>("BookView");
        }
    }
}



//Module B
using System;
using System.Collections.Generic;
using System.Text;

namespace UserModule.Models
{
    public class User
    {
        public int Id { get; set; }        
        public string Name { get; set; }
        public string Email { get; set; }
    }
}


using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.ComponentModel;
using System.Diagnostics.Eventing.Reader;
using System.IO;
using System.Text;
using System.Windows.Controls;
using UserModule.Models;

namespace UserModule.ViewModels
{
    public class UserViewModel : BindableBase
    {
        public UserViewModel()
        {
            InitUsersCollection();
            SaveInExcelCommand = new DelegateCommand<object>(SaveInExcelCommandExecuted);
        }

        private void SaveInExcelCommandExecuted(object obj)
        {
            var dg = obj as DataGrid;
            if (dg != null)
            {
                var items = dg.ItemsSource?.Cast<User>()?.ToList();
            }
        }

        private void InitUsersCollection()
        {
            UsersCollection = new ObservableCollection<User>();
            for (int i = 1; i < 1001; i++)
            {
                UsersCollection.Add(new User()
                {
                    Id = i * i,
                    Name = $"Name_{i}",
                    Email = $"User_{i}@gmail.com"
                });
            }
        }

        private ObservableCollection<User> usersCollection;
        public ObservableCollection<User> UsersCollection
        {
            get
            {
                return usersCollection;
            }
            set
            {
                SetProperty(ref usersCollection, value);
            }
        }

        public DelegateCommand<object> SaveInExcelCommand { get; set; }


        public void ExportListTAsExcel<T>(List<T> dataList, string filePath = "", string sheetName = "Sheet1")
        {
            if (dataList == null || !dataList.Any())
            {
                return;
            }

            //// Set EPPlus license context for free use
            //ExcelPackage.LicenseContext = LicenseContext.NonCommercial;

            //using (var package = new ExcelPackage())
            //{
            //    var worksheet = package.Workbook.Worksheets.Add(sheetName);

            //    // Load data starting from cell A1
            //    worksheet.Cells["A1"].LoadFromCollection(dataList, true);

            //    // Auto-fit columns for better readability
            //    worksheet.Cells[worksheet.Dimension.Address].AutoFitColumns();

            //    // Save the file
            //    package.SaveAs(new FileInfo(filePath));
            //}
        }
    }

    
}


<UserControl x:Class="UserModule.Views.UserView"
             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 
             xmlns:d="http://schemas.microsoft.com/expression/blend/2008" 
             xmlns:local="clr-namespace:UserModule.Views"
             xmlns:prism="http://prismlibrary.com/"
             prism:ViewModelLocator.AutoWireViewModel="True"
             VerticalAlignment="Stretch"
             HorizontalAlignment="Stretch">
    <Grid>
        <DataGrid ItemsSource="{Binding UsersCollection,Mode=TwoWay,UpdateSourceTrigger=PropertyChanged}"
                      VirtualizingPanel.IsVirtualizing="True"
                      VirtualizingPanel.VirtualizationMode="Recycling"
                      VirtualizingPanel.CacheLength="2,2"
                      VirtualizingPanel.CacheLengthUnit="Item"
                      ScrollViewer.IsDeferredScrollingEnabled="True"
                      ScrollViewer.CanContentScroll="True"
                      FontSize="50">
            <DataGrid.ContextMenu>
                <ContextMenu>
                    <MenuItem Header="Save In Excel"
                              Command="{Binding SaveInExcelCommand}"
                              CommandParameter="{Binding RelativeSource={RelativeSource AncestorType=ContextMenu},Path=PlacementTarget}"/>
                </ContextMenu>
            </DataGrid.ContextMenu>
        </DataGrid>
    </Grid>
</UserControl>


using System;
using System.Collections.Generic;
using System.Text;
using UserModule.ViewModels;
using UserModule.Views;

namespace UserModule
{
    public class UserModule : IModule
    {
        IRegionManager regionManager;
        public UserModule(IRegionManager regionManagerValue)
        {
            regionManager = regionManagerValue;
        }

        public void OnInitialized(IContainerProvider containerProvider)
        {
            //regionManager.RegisterViewWithRegion("UserRegion",typeof(UserView));
        }

        public void RegisterTypes(IContainerRegistry containerRegistry)
        {
            containerRegistry.RegisterForNavigation<UserView, UserViewModel>("UserView");
        }
    }
}

posted @ 2025-10-02 16:46 FredGrit 阅读(11) 评论(0) 收藏举报

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