回答編集履歴
1
コード修正
answer
CHANGED
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@@ -8,6 +8,9 @@
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8
8
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<DataTrigger Binding="{Binding Persons}" Value="{x:Null}">
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9
9
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<Setter Property="IsEnabled" Value="False"/>
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10
10
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</DataTrigger>
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11
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+
<DataTrigger Binding="{Binding Persons.Count}" Value="0">
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12
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+
<Setter Property="IsEnabled" Value="False"/>
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13
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+
</DataTrigger>
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11
14
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</Style.Triggers>
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12
15
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</Style>
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13
16
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</Button.Style>
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