回答編集履歴
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追記
test
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@@ -100,7 +100,115 @@
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[IProgress<T> Interface (System) | Microsoft Learn](https://learn.microsoft.com/ja-jp/dotnet/api/system.iprogress-1)
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101
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[wpf iprogress - Google 検索](https://www.google.co.jp/search?q=wpf+iprogress)
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-
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103
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---
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104
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-
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> そのあたりを一切変えないとすると、MainWindowを隠しておく位しか対処はない気がします。
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105
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-
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```xml
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<Window
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x:Class="Q4mn6unrgvjhe45.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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Title="MainWindow"
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Width="800"
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Height="450">
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115
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<Window.Resources>
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<BooleanToVisibilityConverter x:Key="BooleanToVisibilityConverter" />
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</Window.Resources>
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<Window.Visibility>
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<Binding
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Converter="{StaticResource BooleanToVisibilityConverter}"
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Mode="TwoWay"
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Path="IsVisible" />
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</Window.Visibility>
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</Window>
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```
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```cs
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using System.Windows;
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using System.Windows.Data;
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using CommunityToolkit.Mvvm.ComponentModel;
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namespace Q4mn6unrgvjhe45;
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public partial class MainWindow : Window
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{
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public MainWindow()
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{
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InitializeComponent();
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Visibility = Visibility.Hidden; // バインドだけで済ませたいがチラッと見えちゃうので^^;
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DataContext = new MainViewModel();
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}
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}
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partial class MainViewModel : ObservableObject
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{
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[ObservableProperty] private int value;
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[ObservableProperty] private bool isVisible;
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public MainViewModel()
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{
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XXXWindow xWin = new XXXWindow();
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Binding binding = new Binding(nameof(Value)) { Source = this, };
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xWin.SetBinding(XXXWindow.ValueProperty, binding);
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xWin.Show();
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// 別スレッドで処理（投げっぱなし）
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Task.Run(() =>
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{
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Thread.Sleep(1000); // 何か重い処理
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Value = 50;
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Thread.Sleep(1000); // 何か重い処理
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Value = 100;
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Thread.Sleep(500); // 100%見えてから
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Application.Current.Dispatcher.Invoke(() => xWin.Close());
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IsVisible = true;
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});
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}
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}
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```
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---
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> 重い処理を書く場所を変えていいなら、App.xaml.csでやるほうが素直な気はします。
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```xml
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<Application
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x:Class="Q4mn6unrgvjhe45.App"
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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:local="clr-namespace:Q4mn6unrgvjhe45"
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Startup="Application_Startup" />
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```
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```cs
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using System.Windows;
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namespace Q4mn6unrgvjhe45;
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public partial class App : Application
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{
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private async void Application_Startup(object sender, StartupEventArgs e)
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{
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MainWindow MainWindow = new MainWindow();
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XXXWindow xWin = new XXXWindow();
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xWin.Value = 0;
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xWin.Show();
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// 別スレッドでの処理を待機
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await Task.Run(() =>
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{
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Thread.Sleep(1000); // 何か重い処理
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Current.Dispatcher.Invoke(() => xWin.Value = 50); // UIスレッドで更新
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Thread.Sleep(1000); // 何か重い処理
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Current.Dispatcher.Invoke(() => xWin.Value = 100); // UIスレッドで更新
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Thread.Sleep(500); // 100%見えてから
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});
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xWin.Close();
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MainWindow.Show();
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}
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}
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```
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