WPF Prism ioc implemented via Prism.DryIOC

Install-Package Prism.DryIOC;
Install-Packag Prism.WPF;

 

 

//App.xaml
<prism:PrismApplication x:Class="WpfApp7.App"
             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
             xmlns:local="clr-namespace:WpfApp7"
             xmlns:prism="http://prismlibrary.com/">
</prism:PrismApplication>


//App.xaml.cs
using System.Configuration;
using System.Data;
using System.Windows;
using Prism.DryIoc;
using WpfApp7.Services;
using WpfApp7.ViewModels;
using WpfApp7.Views;

namespace WpfApp7
{
    /// <summary>
    /// Interaction logic for App.xaml
    /// </summary>
    public partial class App : PrismApplication
    {
        protected override Window CreateShell()
        {
            return Container.Resolve<MainWindow>();
        }

        protected override void RegisterTypes(IContainerRegistry containerRegistry)
        {
            containerRegistry.Register<IIDService,IDService>();
            containerRegistry.Register<INameService,NameService>();
            containerRegistry.Register<IISBNService,ISBNService>();
            containerRegistry.RegisterForNavigation<ViewA, ViewAViewModel>("ViewA");
            containerRegistry.RegisterForNavigation<ViewB, ViewBViewModel>("ViewB");
            containerRegistry.RegisterForNavigation<MainWindow, MainWindowViewModel>("MainWindow");
        }

        protected override void OnStartup(StartupEventArgs e)
        {
            base.OnStartup(e);             
        }


        protected override void OnInitialized()
        {
            base.OnInitialized();
            var regionManager=Container.Resolve<IRegionManager>();
            regionManager?.RequestNavigate("MainRegion", "ViewA");
        }

    }

}

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

//App.xaml
<prism:PrismApplication x:Class="WpfApp7.App"
             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
             xmlns:local="clr-namespace:WpfApp7"
             xmlns:prism="http://prismlibrary.com/">
</prism:PrismApplication>


//App.xaml.cs
using System.Configuration;
using System.Data;
using System.Windows;
using Prism.DryIoc;
using WpfApp7.Services;
using WpfApp7.ViewModels;
using WpfApp7.Views;

namespace WpfApp7
{
    /// <summary>
    /// Interaction logic for App.xaml
    /// </summary>
    public partial class App : PrismApplication
    {
        protected override Window CreateShell()
        {
            return Container.Resolve<MainWindow>();
        }

        protected override void RegisterTypes(IContainerRegistry containerRegistry)
        {
            containerRegistry.Register<IIDService,IDService>();
            containerRegistry.Register<INameService,NameService>();
            containerRegistry.Register<IISBNService,ISBNService>();
            containerRegistry.RegisterForNavigation<ViewA, ViewAViewModel>("ViewA");
            containerRegistry.RegisterForNavigation<ViewB, ViewBViewModel>("ViewB");
            containerRegistry.RegisterForNavigation<MainWindow, MainWindowViewModel>("MainWindow");
        }

        protected override void OnStartup(StartupEventArgs e)
        {
            base.OnStartup(e);             
        }


        protected override void OnInitialized()
        {
            base.OnInitialized();
            var regionManager=Container.Resolve<IRegionManager>();
            regionManager?.RequestNavigate("MainRegion", "ViewA");
        }

    }

}

//MainWindow.xaml
<Window x:Class="WpfApp7.MainWindow"
        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:local="clr-namespace:WpfApp7"
        mc:Ignorable="d"
        Title="{Binding MainVMTitle}"
        xmlns:prism="http://prismlibrary.com/"
        WindowState="Maximized"
        VerticalAlignment="Stretch"
        HorizontalAlignment="Stretch"
        prism:ViewModelLocator.AutoWireViewModel="True">
    <Window.Resources>
        <Style TargetType="Button">
            <Setter Property="FontSize" Value="50"/>
        </Style>
        <Style TargetType="TextBlock">
            <Setter Property="FontSize" Value="30"/>
            <Style.Triggers>
                <Trigger Property="IsMouseOver" Value="True">
                    <Setter Property="FontSize" Value="50"/>
                    <Setter Property="Foreground" Value="Red"/>
                </Trigger>
            </Style.Triggers>
        </Style>
    </Window.Resources>
    <Grid>
        <Grid.RowDefinitions>
            <RowDefinition Height="Auto"/>
            <RowDefinition Height="*"/>
            <RowDefinition Height="Auto"/>
        </Grid.RowDefinitions>
        <Grid.ColumnDefinitions>
            <ColumnDefinition/>
            <ColumnDefinition/>
        </Grid.ColumnDefinitions>
        <Button Content="View A"
                Grid.Row="0"
                Grid.Column="0"
                Command="{Binding NavigateCommand}"
                CommandParameter="ViewA"/>
        <Button Content="View B"
                Grid.Row="0"
                Grid.Column="1"
                Command="{Binding NavigateCommand}"
                CommandParameter="ViewB"/>

        <ContentControl Grid.Row="1"
                        Grid.Column="0"
                        Grid.ColumnSpan="2"
                        VerticalAlignment="Stretch"
                        HorizontalAlignment="Stretch"
                        prism:RegionManager.RegionName="MainRegion"/>
        <TextBlock Text="{Binding StatusMsg}"
                   Grid.Row="2"
                   Grid.Column="0"
                   Grid.ColumnSpan="2"/>
    </Grid>
</Window>

//MainWindowViewModel.cs
using System;
using System.Collections.Generic;
using System.Text;

namespace WpfApp7.ViewModels
{
    public class MainWindowViewModel : BindableBase
    {
        IRegionManager regionManager;
        public MainWindowViewModel(IRegionManager regionManagerValue)
        {
            MainVMTitle = $"MainVMTitle now is {DateTime.Now.ToString("yyyy-MM-dd HH-mm-ss")}";
            regionManager = regionManagerValue;
            NavigateCommand = new DelegateCommand<string>(NavigateCommandExecuted);
            System.Timers.Timer tmr = new System.Timers.Timer();
            tmr.Interval = 1000;
            tmr.Elapsed += Tmr_Elapsed;
            tmr.Start();
        }

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

        private void NavigateCommandExecuted(string viewName)
        {
            if (!string.IsNullOrEmpty(viewName))
            {
                regionManager.RequestNavigate("MainRegion", viewName);
                StatusMsg = $"Navigated to {viewName}!";
            }
        }

        public DelegateCommand<string> NavigateCommand { get; set; }

        private string stausMsg;
        public string StatusMsg
        {
            get
            {
                return stausMsg;
            }
            set
            {
                SetProperty(ref stausMsg, value);
            }
        }

        private string mainVMTitle;
        public string MainVMTitle
        {
            get
            {
                return mainVMTitle;
            }
            set
            {
                SetProperty(ref mainVMTitle, value);
            }
        }
    }
}


//ViewA.xaml
<UserControl x:Class="WpfApp7.Views.ViewA"
             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:WpfApp7.Views"
             xmlns:localVM="clr-namespace:WpfApp7.ViewModels"
             xmlns:prism="http://prismlibrary.com/"
             prism:ViewModelLocator.AutoWireViewModel="True"
             VerticalAlignment="Stretch"
             HorizontalAlignment="Stretch"
             mc:Ignorable="d" 
             >
    <UserControl.Resources>
        <localVM:ImgUrlToImgSourceConverter x:Key="ImgUrlToImgSourceConverter"/>
    </UserControl.Resources>
    <Grid>
        <Grid.RowDefinitions>
            <RowDefinition Height="Auto"/>
            <RowDefinition Height="*"/>
            <RowDefinition Height="Auto"/>
        </Grid.RowDefinitions>
        
        <TextBlock Grid.Row="0"
                   Text="{Binding ViewAStatusMsg}"/>        
        
        <DataGrid Grid.Row="1"
                  ItemsSource="{Binding BooksCollection,Mode=TwoWay,UpdateSourceTrigger=PropertyChanged}"
                  VirtualizingPanel.IsVirtualizing="True"
                  VirtualizingPanel.VirtualizationMode="Recycling"
                  VirtualizingPanel.CacheLengthUnit="Item"
                  VirtualizingPanel.CacheLength="5,5"
                  ScrollViewer.CanContentScroll="True"
                  ScrollViewer.IsDeferredScrollingEnabled="True">
            <DataGrid.Columns>
                <DataGridTemplateColumn>
                    <DataGridTemplateColumn.CellTemplate>
                        <DataTemplate>
                            <Grid Width="{Binding DataContext.GridWidth,RelativeSource={RelativeSource AncestorType=UserControl}}"
                                  Height="{Binding DataContext.GridHeight,RelativeSource={RelativeSource AncestorType=UserControl}}"
                                  >
                                <Grid.Resources>
                                    <Style TargetType="TextBlock">
                                        <Setter Property="FontSize" Value="30"/>
                                        <Setter Property="Width" Value="Auto"/>
                                        <Setter Property="HorizontalAlignment" Value="Center"/>
                                        <Setter Property="VerticalAlignment" Value="Center"/>
                                        <Style.Triggers>
                                            <Trigger Property="IsMouseOver" Value="True">
                                                <Setter Property="FontSize" Value="50"/>
                                                <Setter Property="Foreground" Value="Red"/>
                                            </Trigger>
                                        </Style.Triggers>
                                    </Style>
                                </Grid.Resources>
                                <Grid.Background>
                                    <ImageBrush ImageSource="{Binding ImgUrl,Converter={StaticResource ImgUrlToImgSourceConverter}}"/>
                                </Grid.Background>
                                <Grid.RowDefinitions>
                                    <RowDefinition/>
                                    <RowDefinition/>
                                </Grid.RowDefinitions>
                                <Grid.ColumnDefinitions>
                                    <ColumnDefinition/>
                                    <ColumnDefinition/>
                                    <ColumnDefinition/>
                                    <ColumnDefinition/>
                                    <ColumnDefinition/>
                                </Grid.ColumnDefinitions>
                                <TextBlock Text="{Binding Id}" Grid.Row="0" Grid.Column="0"/>
                                <TextBlock Text="{Binding Name}" Grid.Row="0" Grid.Column="1"/>
                                <TextBlock Text="{Binding Title}" Grid.Row="0" Grid.Column="2"/>
                                <TextBlock Text="{Binding Author}" Grid.Row="0" Grid.Column="3"/>
                                <TextBlock Text="{Binding Topic}" Grid.Row="0" Grid.Column="4"/>
                                <TextBlock Text="{Binding ISBN}" Grid.Row="1" Grid.Column="0" Grid.ColumnSpan="5"/>
                            </Grid>
                        </DataTemplate>
                    </DataGridTemplateColumn.CellTemplate>
                </DataGridTemplateColumn>
            </DataGrid.Columns>
        </DataGrid>

        <Button Grid.Row="2" FontSize="50"
                Content="View A Load Data"
                Command="{Binding ViewALoadDataCommand}"/>
    </Grid>
</UserControl>


//ViewAViewModel.cs
using System;
using System.Collections.Concurrent;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.Globalization;
using System.IO;
using System.Text;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using WpfApp7.Models;
using WpfApp7.Services;

namespace WpfApp7.ViewModels
{
    public class ViewAViewModel:BindableBase
    {
        IIDService idService;
        INameService nameService;
        IISBNService isbnService;
        public ViewAViewModel(IIDService idServiceValue,INameService nameServiceValue,IISBNService isbnServiceValue)
        {
            ViewAStatusMsg = $"In View A,now is {DateTime.Now.ToString("yyyy-MM-dd HH-mm-ss")}";
            idService = idServiceValue;
            nameService= nameServiceValue;
            isbnService= isbnServiceValue;
            ViewALoadDataCommand = new DelegateCommand(ViewALoadDataCommandExecuted);
            InitGridWidthAndHeight();
            System.Timers.Timer tmr=new System.Timers.Timer();
            tmr.Interval = 1000;
            tmr.Elapsed += Tmr_Elapsed;
            tmr.Start();
        }

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

        private void InitGridWidthAndHeight()
        {
            var mainWin=System.Windows.Application.Current.MainWindow;
            if(mainWin != null )
            {
                GridWidth = mainWin.ActualWidth;
                GridHeight = mainWin.ActualHeight/2;
            }
        }

        private void ViewALoadDataCommandExecuted()
        {
            var imgDir = @"../../../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>();
            for(int i=1;i<10001;i++)
            {
                BooksCollection.Add(new Book()
                {
                    Id = idService.GetID(),
                    Name = nameService.GetName(),
                    ISBN = isbnService.GetISBN(),
                    Author=$"Author_{i}",
                    Title=$"Title_{i}",
                    Topic=$"Topic_{i}",
                    ImgUrl = imgs[i%imgsCount]
                });
            }
        }

        private string viewAStatusMsg;
        public string ViewAStatusMsg
        {
            get
            {
                return viewAStatusMsg;
            }
            set
            {
                SetProperty(ref viewAStatusMsg, value);
            }
        }


        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);
            }
        }

        public DelegateCommand ViewALoadDataCommand { get;set; }
    }

    public class ImgUrlToImgSourceConverter : IValueConverter
    {
        ConcurrentDictionary<string,ImageSource> imgCacheDic=new ConcurrentDictionary<string,ImageSource>();
        public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
        {
            var imgUrl = value as string;
            if (string.IsNullOrWhiteSpace(imgUrl) || !File.Exists(imgUrl))
            {
                return null;
            }

            if(imgCacheDic.TryGetValue(imgUrl, out var img))
            {
                return img;
            }

            BitmapImage bmi = new BitmapImage();
            bmi.BeginInit();
            bmi.UriSource=new Uri(imgUrl, UriKind.RelativeOrAbsolute);
            bmi.EndInit();
            bmi.Freeze();
            imgCacheDic[imgUrl] = bmi;
            return bmi;
        }

        public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
        {
            throw new NotImplementedException();
        }
    }
}


//ViewB.xaml
<UserControl x:Class="WpfApp7.Views.ViewB"
             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:WpfApp7.Views"
             mc:Ignorable="d" 
             xmlns:prism="http://prismlibrary.com/"
             prism:ViewModelLocator.AutoWireViewModel="True"
             VerticalAlignment="Stretch"
             HorizontalAlignment="Stretch">
    <Grid>
        <Grid.RowDefinitions>
            <RowDefinition Height="Auto"/>
            <RowDefinition Height="*"/>
        </Grid.RowDefinitions>
        <TextBlock Grid.Row="0"
                   FontSize="50"
                   Text="{Binding ViewBStatusMsg}"/>
        <ListBox Grid.Row="1"
                 ItemsSource="{Binding BooksCollection}"
                 VirtualizingPanel.IsVirtualizing="True"
                 VirtualizingPanel.ScrollUnit="Item"
                 VirtualizingPanel.CacheLengthUnit="Item"
                 VirtualizingPanel.CacheLength="5,5"
                 ScrollViewer.IsDeferredScrollingEnabled="True"
                 ScrollViewer.CanContentScroll="True">
                <ListBox.ItemTemplate>
                    <DataTemplate>
                        <Grid>
                            <Grid.Resources>
                                <Style TargetType="TextBlock">
                                    <Setter Property="FontSize" Value="30"/>
                                    <Setter Property="Width" Value="Auto"/>
                                    <Setter Property="HorizontalAlignment" Value="Center"/>
                                    <Setter Property="VerticalAlignment" Value="Center"/>
                                    <Style.Triggers>
                                        <Trigger Property="IsMouseOver" Value="True">
                                            <Setter Property="FontSize" Value="50"/>
                                            <Setter Property="Foreground" Value="Red"/>
                                        </Trigger>
                                    </Style.Triggers>
                                </Style>
                            </Grid.Resources>
                            <Grid.ColumnDefinitions>
                                <ColumnDefinition/>
                                <ColumnDefinition/>
                                <ColumnDefinition/>
                                <ColumnDefinition/>
                                <ColumnDefinition/>
                                <ColumnDefinition/>
                                <ColumnDefinition/>
                            </Grid.ColumnDefinitions>
                            <TextBlock Text="{Binding Id}" Grid.Column="0"/>
                            <TextBlock Text="{Binding Name}" Grid.Column="1"/>
                            <TextBlock Text="{Binding Author}" Grid.Column="2"/>
                            <TextBlock Text="{Binding Title}" Grid.Column="3"/>
                            <TextBlock Text="{Binding Topic}" Grid.Column="4"/>
                            <TextBlock Text="{Binding ISBN}" Grid.Column="5"/>
                            <TextBlock Text="{Binding ImgUrl}" Grid.Column="6"/>
                        </Grid>
                    </DataTemplate>
                </ListBox.ItemTemplate>            
        </ListBox>
    </Grid>
</UserControl>


//ViewBViewModel.cs
using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.IO;
using System.Text;
using WpfApp7.Models;
using WpfApp7.Services;

namespace WpfApp7.ViewModels
{
    public class ViewBViewModel : BindableBase
    {
        IIDService idService;
        INameService nameService;
        IISBNService isbnService;
        public ViewBViewModel(IIDService idServiceValue, IISBNService isbnServiceValue, INameService nameServiceValue)
        {
            idService = idServiceValue;
            isbnService = isbnServiceValue;
            nameService = nameServiceValue;
            ViewBStatusMsg = $"In View B,now is {DateTime.Now.ToString("yyyy-MM-dd HH-mm-ss")}.";
            InitBooksCollection();
            System.Timers.Timer tmr = new System.Timers.Timer();
            tmr.Interval = 1000;
            tmr.Elapsed += Tmr_Elapsed;
            tmr.Start();
        }

        private void InitBooksCollection()
        {
            var imgDir = @"../../../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>();
            for(int i=1;i<10001;i++)
            {
                BooksCollection.Add(new Book() 
                { 
                    Id=idService.GetID(),
                    Name=nameService.GetName(),
                    ISBN=isbnService.GetISBN(),
                    Author=$"Author_{i}",
                    Title=$"Title_{i}",
                    Topic=$"Topic_{i}",
                    ImgUrl = imgs[i%imgsCount]
                });                
            }
        }

        private void Tmr_Elapsed(object? sender, System.Timers.ElapsedEventArgs e)
        {
            System.Windows.Application.Current.Dispatcher.Invoke(() =>
            {
                ViewBStatusMsg = $"In View B,now is {DateTime.Now.ToString("yyyy-MM-dd HH-mm-ss")}.";
            });            
        }

        private string viewBStatusMsg;
        public string ViewBStatusMsg
        {
            get
            {
                return viewBStatusMsg;
            }
            set
            {
                SetProperty(ref viewBStatusMsg, value);
            }
        }

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