WPF布局缓冲颜色
<Grid Name="grid1">
<Grid.RowDefinitions >
<RowDefinition Height="*"></RowDefinition>
<RowDefinition Height="auto"></RowDefinition>
<RowDefinition Height="*"></RowDefinition>
</Grid.RowDefinitions>
<TextBox Grid.Row="0" VerticalAlignment="Stretch" HorizontalAlignment="Stretch" Margin="10,10,13,10"
Name="txtQuestion" TextWrapping="Wrap" FontFamily="Verdana" FontSize="24">
[pleass using english]
</TextBox>
<Button Grid.Row="1" VerticalAlignment="Top" HorizontalAlignment="Left" Margin="10,0,0,20" Width="127" Height="34"
Name="btn" Click="btn_Click">
</Button>
<TextBox Grid.Row="2" VerticalAlignment="Stretch" HorizontalAlignment="Stretch" Margin="10,10,13,10"
Name="txtAnw" TextWrapping="Wrap" FontFamily="Verdana" FontSize="24" Foreground="Red">
[pleass using english]
</TextBox>
<Grid.Background>
<LinearGradientBrush>
<LinearGradientBrush.GradientStops>
<GradientStop Offset="0.00" Color="Blue"></GradientStop>
<GradientStop Offset="0.50" Color="Red"></GradientStop>
<GradientStop Offset="1.00" Color="Black"></GradientStop>
</LinearGradientBrush.GradientStops>
</LinearGradientBrush>
</Grid.Background>
</Grid>