回答編集履歴
2
コード修正
answer
CHANGED
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@@ -29,11 +29,11 @@
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29
29
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```C#
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30
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public ViewModel ()
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31
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{
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32
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-
XValues = ModelInstance.Positions.Select(positions => positions.Select(position => (int)position.X).ToList()).
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32
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+
XValues = ModelInstance.Positions.Select(positions => positions.Select(position => (int)position.X).ToList()).ToReactiveProperty().AddTo(_disposable);
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33
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-
YValues = ModelInstance.Positions.Select(positions => positions.Select(position => (int)position.Y).ToList()).
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33
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+
YValues = ModelInstance.Positions.Select(positions => positions.Select(position => (int)position.Y).ToList()).ToReactiveProperty().AddTo(_disposable);
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}
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36
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-
public
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36
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+
public ReactiveProperty<List<int>> XValues { get; }
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37
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38
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-
public
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38
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+
public ReactiveProperty<List<int>> YValues { get; }
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39
39
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```
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1
別の方法を追記
answer
CHANGED
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@@ -21,4 +21,19 @@
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21
21
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public ReadOnlyReactiveCollection<int> XValues { get; }
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22
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public ReadOnlyReactiveCollection<int> YValues { get; }
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24
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+
```
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25
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+
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26
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+
---
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27
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+
上記の方法では、`Positions`の操作（追加、移動など）に応じて,`XValues`や`YValues`も変わるようになりますが,`Positions`のリストを丸ごと変えるだけというのであれば、`Model`はそのままで、`ViewModel`を以下のように修正するのでもいいかもしれません。
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28
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+
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29
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+
```C#
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30
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public ViewModel ()
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31
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{
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32
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XValues = ModelInstance.Positions.Select(positions => positions.Select(position => (int)position.X).ToList()).ToReadOnlyReactiveProperty().AddTo(_disposable);
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33
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+
YValues = ModelInstance.Positions.Select(positions => positions.Select(position => (int)position.Y).ToList()).ToReadOnlyReactiveProperty().AddTo(_disposable);
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34
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}
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35
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+
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36
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+
public ReadOnlyReactiveProperty<List<int>> XValues { get; }
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37
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+
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38
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+
public ReadOnlyReactiveProperty<List<int>> YValues { get; }
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24
39
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```
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