回答編集履歴
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コード例
test
CHANGED
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@@ -1,3 +1,121 @@
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1
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プロパティを10個用意するのではなく
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2
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3
3
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1つのプロパティを持ったVMのインスタンスを10個用意します。
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---
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8
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9
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10
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11
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こんな感じです。
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12
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(ReactiveCommand使いましたが、本題とは関係ないので気にしないでください。)
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```xml
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<StackPanel>
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<Button Content="Click!" Command="{Binding OkButtonCommand}"/>
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<TextBlock Text="{Binding PropArray[0].Value}"/>
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<TextBlock Text="{Binding PropArray[1].Value}"/>
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</StackPanel>
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30
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```
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```C#
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34
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35
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class MainVM
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36
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{
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39
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public SomeVM[] PropArray { get; } = new SomeVM[] { new SomeVM(1), new SomeVM(2) };
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40
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public ReactiveCommand OkButtonCommand { get; }
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public MainVM()
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{
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OkButtonCommand = new ReactiveCommand();
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48
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49
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OkButtonCommand.Subscribe(_ => SomethingToDo());
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50
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}
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53
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private void SomethingToDo()
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56
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{
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58
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PropArray[0].Value++;
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60
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61
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}
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62
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63
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}
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64
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65
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```
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67
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```C#
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68
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class SomeVM : INotifyPropertyChanged
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70
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{
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public event PropertyChangedEventHandler PropertyChanged;
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75
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protected void OnPropertyChanged(PropertyChangedEventArgs e)
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76
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{
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PropertyChanged?.Invoke(this, e);
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80
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}
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82
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83
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84
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85
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private int _value;
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86
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public int Value
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{
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90
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get { return _value; }
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92
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set
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94
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95
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{
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96
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97
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if (value == _value)
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98
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return;
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100
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_value = value;
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102
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OnPropertyChanged(new PropertyChangedEventArgs(nameof(Value)));
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104
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105
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}
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106
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107
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}
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108
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109
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110
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111
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public SomeVM(int name)
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112
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113
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{
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114
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115
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_value = name;
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116
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117
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}
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118
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119
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}
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120
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121
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```
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