質問編集履歴
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ソースコード追加/バージョン情報追加
test
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WPF Setting
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WPF Settings.settings コレクション保存
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test
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表題/Memoを入力して、追加すると、下のリストボックスに内容が追加されるアプリを作成しています。
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左側リストボックスを選択すると、右側のリストボックスに内容が表示される。
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[]
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@@ -24,8 +20,340 @@
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アプリ内で追加したリスト内容を保存し、アプリを再起動しても追加した内容が出てくるようにしたいです。
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Setting
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Settings.settingsを使用するのが一番楽かと思いますが、
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リストボックスは、ソースコード内ではコレクションをバインドしています。
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Setting
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Settings.settingsにコレクションを追加することはできるのでしょうか？
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### 該当のソースコード
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```C#
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using Prism.Mvvm;
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using System;
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using System.ComponentModel;
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using Reactive.Bindings;
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using System.Linq;
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using System.Reactive.Linq;
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using System.Collections.ObjectModel;
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54
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namespace ListBoxデータ保存.ViewModels
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{
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public class MainWindowViewModel : BindableBase
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{
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public ReactiveProperty<string> Txt_Title { get; set; } = new ReactiveProperty<string>();
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public ReactiveProperty<string> Txt_Memo { get; set; } = new ReactiveProperty<string>();
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public ObservableCollection<Task> TaskList { get; set; }
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//コマンド
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public ReactiveCommand AddListCommand { get; private set; }
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public MainWindowViewModel()
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{
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TaskList = new ObservableCollection<Task>();
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//コマンド生成
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AddListCommand = Txt_Title
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.Select(x => !string.IsNullOrEmpty(x))
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.ToReactiveCommand();
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//コマンド動作定義
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AddListCommand.Subscribe(_ =>
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{
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TaskList.Add(new Task { Title = Txt_Title.Value, Memo = Txt_Memo.Value });
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Txt_Title.Value = "";
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Txt_Memo.Value = "";
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});
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}
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}
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public class Task : BindableBase
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{
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public string Title { get; set; }
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public string Memo { get; set; }
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public ReactiveProperty<bool> IsSelected { get; set; } = new ReactiveProperty<bool>();
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}
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}
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```
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```XAML
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<Window x:Class="ListBoxデータ保存.Views.MainWindow"
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xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
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xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
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xmlns:prism="http://prismlibrary.com/"
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prism:ViewModelLocator.AutoWireViewModel="True"
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Title="{Binding Title}" Height="350" Width="525" >
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<Window.Resources>
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<BooleanToVisibilityConverter x:Key="BooleanToVisibilityConverter" />
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</Window.Resources>
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<Grid>
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<Grid.ColumnDefinitions>
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<ColumnDefinition />
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<ColumnDefinition Width="2*" />
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</Grid.ColumnDefinitions>
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<Grid.RowDefinitions>
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<RowDefinition Height="Auto" />
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<RowDefinition />
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</Grid.RowDefinitions>
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<Grid>
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<Grid.ColumnDefinitions>
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<ColumnDefinition Width="Auto" />
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<ColumnDefinition />
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</Grid.ColumnDefinitions>
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<Label
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Margin="5"
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VerticalAlignment="Center"
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Content="表題" HorizontalAlignment="Right" Width="34" />
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<TextBox
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Grid.Column="1"
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VerticalAlignment="Center"
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Text="{Binding Txt_Title.Value, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}"
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TextWrapping="Wrap" Margin="10,0,10,0" />
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</Grid>
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<Grid Grid.Column="1">
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<Grid.ColumnDefinitions>
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<ColumnDefinition Width="Auto" />
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<ColumnDefinition />
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<ColumnDefinition Width="Auto" />
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</Grid.ColumnDefinitions>
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<Label
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Margin="5"
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VerticalAlignment="Center"
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Content="Memo" HorizontalAlignment="Right" Width="44" />
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<TextBox
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Grid.Column="1"
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Margin="5"
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VerticalAlignment="Center"
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Text="{Binding Txt_Memo.Value, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}"
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TextWrapping="Wrap" />
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<Button
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Grid.Column="2"
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MinWidth="56"
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Margin="5"
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Command="{Binding AddListCommand}"
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Content="追加" HorizontalAlignment="Left" Width="56" />
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</Grid>
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<Grid Grid.Row="1">
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<ListBox
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x:Name="lst_Title"
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Margin="5"
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ItemsSource="{Binding TaskList}"
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DisplayMemberPath="Title"
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IsSynchronizedWithCurrentItem="True"
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SelectionMode="Extended">
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<ListBox.ItemContainerStyle>
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<Style TargetType="ListBoxItem">
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<Setter Property="IsSelected" Value="{Binding IsSelected.Value}" />
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</Style>
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</ListBox.ItemContainerStyle>
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</ListBox>
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</Grid>
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<Grid Grid.Row="1" Grid.Column="1" >
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<ListBox
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Margin="5"
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ItemsSource="{Binding TaskList}">
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<ListBox.ItemContainerStyle>
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<Style TargetType="ListBoxItem">
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<Setter Property="Visibility" Value="{Binding IsSelected.Value, Converter={StaticResource BooleanToVisibilityConverter}}" />
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</Style>
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</ListBox.ItemContainerStyle>
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<ListBox.ItemTemplate>
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<DataTemplate>
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<StackPanel>
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<TextBlock FontWeight="Bold" Text="{Binding Title}" />
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<TextBlock Text="{Binding Memo}" />
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</StackPanel>
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</DataTemplate>
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</ListBox.ItemTemplate>
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</ListBox>
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</Grid>
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</Grid>
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</Window>
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```
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353
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### 補足情報（FW/ツールのバージョンなど）
|
|
354
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+
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|
355
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+
OS：win10
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|
356
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+
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357
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.NET Framework：4.7.2
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358
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+
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359
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Visual Studio 2019
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