<Grid>
<Popup Name="popup_addUser" IsOpen="True" Width="300" Opacity="0" Placement="Center" > <Popup Name="popup_ad
阅读背景：
wpf Popup背景色怎么默认是黑色的。
来源：互联网
<Grid>
<Popup Name="popup_addUser" IsOpen="True" Width="300" Opacity="0" Placement="Center" > <Popup Name="popup_ad
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