The property 'command' does not exist on the type 'Button'

Error 1 The property 'command' does not exist on the type 'Button' in the XML namespace 'http://schemas.microsoft.com/winfx/2006/xaml/presentation'. C:UsersAdmindocumentsvisual studio 2010ProjectsMvvmLight2SampleMainPage.xaml 33 21 Sample

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您需要在您的XAML中使用Command大写：

<Button Command="{Binding SomeCommand}">

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