回答編集履歴
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見直しキャンペーン中
answer
CHANGED
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@@ -1,55 +1,55 @@
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RXはあまりわかっていませんが、更新前に選択してるような状態なんじゃないでしょうか？
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miyagさんの意図通りかちょっと自信がありませんが、このようにしたところ選択は維持されました。
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```
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using Reactive.Bindings;
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using Reactive.Bindings.Extensions;
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using System;
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using System.ComponentModel;
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using System.Diagnostics;
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using System.Reactive.Disposables;
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using System.Reactive.Linq;
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using System.Threading;
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namespace Questions328623
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{
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public class MainWindowViewModel : INotifyPropertyChanged
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{
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public event PropertyChangedEventHandler PropertyChanged;
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private CompositeDisposable Disposable { get; } = new CompositeDisposable();
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public ReactiveCollection<string> ListData { get; } = new ReactiveCollection<string>();
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public ReactiveProperty<string> SelectedNo { get; } = new ReactiveProperty<string>();
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public MainWindowViewModel()
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{
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//SelectedNo.Subscribe(_ => { });
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Observable.Timer(TimeSpan.FromSeconds(0.5), TimeSpan.FromSeconds(10))
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.ObserveOn(SynchronizationContext.Current)
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.Subscribe(_ =>
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{
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var selectedNo = SelectedNo.Value;
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ListDataUpdate();
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SelectedNo.Value = selectedNo;
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Debug.WriteLine(SelectedNo);
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}).AddTo(Disposable);
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}
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private Random random = new Random();
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private void ListDataUpdate()
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{
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ListData.Clear();
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var max = random.Next(50);
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for (var i = 1; i <= max; i++)
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{
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ListData.Add(i.ToString());
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}
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}
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}
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}
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1
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RXはあまりわかっていませんが、更新前に選択してるような状態なんじゃないでしょうか？
|
|
2
|
+
|
|
3
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+
miyagさんの意図通りかちょっと自信がありませんが、このようにしたところ選択は維持されました。
|
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4
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+
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5
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```cs
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6
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using Reactive.Bindings;
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7
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using Reactive.Bindings.Extensions;
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8
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using System;
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9
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+
using System.ComponentModel;
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10
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using System.Diagnostics;
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11
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+
using System.Reactive.Disposables;
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12
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+
using System.Reactive.Linq;
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13
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using System.Threading;
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14
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+
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15
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namespace Questions328623
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16
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{
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17
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public class MainWindowViewModel : INotifyPropertyChanged
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18
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+
{
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19
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+
public event PropertyChangedEventHandler PropertyChanged;
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20
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private CompositeDisposable Disposable { get; } = new CompositeDisposable();
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21
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+
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22
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public ReactiveCollection<string> ListData { get; } = new ReactiveCollection<string>();
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23
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+
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24
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public ReactiveProperty<string> SelectedNo { get; } = new ReactiveProperty<string>();
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25
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26
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public MainWindowViewModel()
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{
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//SelectedNo.Subscribe(_ => { });
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30
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31
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Observable.Timer(TimeSpan.FromSeconds(0.5), TimeSpan.FromSeconds(10))
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32
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.ObserveOn(SynchronizationContext.Current)
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.Subscribe(_ =>
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{
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var selectedNo = SelectedNo.Value;
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ListDataUpdate();
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SelectedNo.Value = selectedNo;
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Debug.WriteLine(SelectedNo);
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}).AddTo(Disposable);
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}
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private Random random = new Random();
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private void ListDataUpdate()
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45
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{
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ListData.Clear();
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47
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var max = random.Next(50);
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48
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for (var i = 1; i <= max; i++)
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{
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ListData.Add(i.ToString());
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}
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}
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}
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}
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```
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