回答編集履歴
1
バインドできてなかったので訂正
test
CHANGED
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@@ -20,9 +20,15 @@
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20
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Title="MainWindow" Height="350" Width="525">
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<Window.DataContext>
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<local:MainWindowViewModel />
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</Window.DataContext>
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28
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<Grid>
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25
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-
<local:UserControl1 prop="
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<local:UserControl1 prop="{Binding num}" />
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</Grid>
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@@ -100,38 +106,48 @@
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101
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```C#
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102
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103
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-
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109
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public class MainWindowViewModel : INotifyPropertyChanged
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-
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{
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-
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private int _num;
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-
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115
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public int num
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-
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{
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-
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get
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-
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{
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return _num;
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-
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}
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-
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set
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-
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{
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-
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_num = value;
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-
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PropertyChanged?.Invoke(this, new PropertyChangedEventArgs("num"));
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-
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}
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-
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}
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-
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139
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public event PropertyChangedEventHandler PropertyChanged;
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public MainWindowViewModel()
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{
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num = 10;
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-
}
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}
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150
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151
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}
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```
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