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<Button Name="btn1" Content="1" HorizontalAlignment="Left" Margin="13,127,0,0" VerticalAlignment="Top" Click="Button_Click"/>
<Button Name="btn2" Content="2" HorizontalAlignment="Left" Margin="135,124,0,0" VerticalAlignment="Top" Click="Button_Click"/>
如何仅通过一个函数调用即可获取当前按钮的内容?获取当前按钮的内容