XAML菜单背景颜色覆盖WPF中带有表达式3的窗口背景颜色

Question

我将WPF用于使用3.5 .NET框架的Visual Studio WPF 2008项目。我是WPF的新手，特别是Expression Blend 3，我正在尝试设计用户界面。我为主窗口定义了一个漂亮的双色渐变背景。当没有菜单定义时，它可以很好地显示以下XAML代码：

<Window
   xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
   xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
   xmlns:d="http://schemas.microsoft.com/expression/blend/2008" xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
   x:Class="XYZZY.MainWindow"
   x:Name="Window"
   Title="XYZZY Lobby" HorizontalAlignment="Center"
   Width="796" Height="480" mc:Ignorable="d">
   <Window.Background>
      <LinearGradientBrush EndPoint="0.5,1" StartPoint="0.5,0">
         <GradientStop Color="#FF434D7A" Offset="0"/>
         <GradientStop Color="#FF180CFA" Offset="1"/>
      </LinearGradientBrush>
   </Window.Background>

   <Grid x:Name="LayoutRoot" Width="764">
      <Path Fill="Black" Stretch="Fill" Stroke="Black" HorizontalAlignment="Left" Margin="-227,0,0,184" VerticalAlignment="Bottom" Width="1" Height="1" Data="M-227,256"/>
       <ListView HorizontalAlignment="Left" Width="239" Margin="0,148,0,45">
        <ListView.View>
         <GridView>
          <GridViewColumn Width="90" Header="Game" />
          <GridViewColumn Width="60" Header="Stakes" />
          <GridViewColumn Width="35" Header="Seats" />
         </GridView>
        </ListView.View>
       </ListView>
       <ListView Margin="239,148,218,45">
         <ListView.View>
            <GridView>
                <GridViewColumn Width="90" Header="Table" />
                <GridViewColumn Width="15" Header="Players" />
                <GridViewColumn Width="60" Header="Buy-in" />
                <GridViewColumn Width="50" Header="Speed" />
                <GridViewColumn Width="25" Header="H/Hr" />
                <GridViewColumn Width="35" Header="Avg Pot" />
               <GridViewColumn/>
            </GridView>
         </ListView.View>
       </ListView>
       <ListView Margin="546,148,0,45">
         <ListView.View>
            <GridView>
               <GridViewColumn Width="90" Header="Player" />
               <GridViewColumn Width="60" Header="City" />
               <GridViewColumn Width="35" Header="Chips" />
            </GridView>
         </ListView.View>
       </ListView>
       <TextBlock x:Name="LobbyServerLabel" HorizontalAlignment="Left" VerticalAlignment="Bottom" TextWrapping="Wrap" Text="Lobby Server - not connected"/>
       <TextBlock x:Name="GameServerLabel" HorizontalAlignment="Center" VerticalAlignment="Bottom" TextWrapping="Wrap"><Run Text="Game Server - not connected"/></TextBlock>
       <Label x:Name="SkinName1" Margin="8,54,0,0" VerticalAlignment="Top" Content="XYZZY" FontSize="36" Foreground="#FFD23C32" HorizontalAlignment="Left" FontFamily="Georgia" FontWeight="Bold"/>
       <Label x:Name="SkinName2" Margin="182.405,54,459,0" VerticalAlignment="Top" Content="A A" FontSize="36" Foreground="#FFD23C32" FontFamily="Georgia" FontWeight="Bold"/>
       <Image VerticalAlignment="Top" Width="41.81" Height="51.519" Source="Spade1.png" Stretch="Fill" Margin="136.595,53.384,585.595,0"/>
   </Grid>
</Window>

但是，一旦我添加菜单，菜单的背景颜色似乎会占据窗口其余部分的背景颜色。以下是与菜单定义相同的代码：

<Window
   xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
   xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
   xmlns:d="http://schemas.microsoft.com/expression/blend/2008" xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
   x:Class="AttackPoker2.MainWindow"
   x:Name="Window"
   Title="Attack Poker Lobby" HorizontalAlignment="Center"
   Width="796" Height="480" mc:Ignorable="d">
   <Window.Background>
      <LinearGradientBrush EndPoint="0.5,1" StartPoint="0.5,0">
         <GradientStop Color="#FF434D7A" Offset="0"/>
         <GradientStop Color="#FF180CFA" Offset="1"/>
      </LinearGradientBrush>
   </Window.Background>

   <Grid x:Name="LayoutRoot" Width="764">
      <Path Fill="Black" Stretch="Fill" Stroke="Black" HorizontalAlignment="Left" Margin="-227,0,0,184" VerticalAlignment="Bottom" Width="1" Height="1" Data="M-227,256"/>
        <Menu>
          <MenuItem Header="File">
            <MenuItem Header="New"></MenuItem>
            <MenuItem Header="Open"></MenuItem>
            <MenuItem Header="Save"></MenuItem>
            <Separator></Separator>
            <MenuItem Header="Exit"></MenuItem>
          </MenuItem>
          <MenuItem Header="Edit">
            <MenuItem Header="Undo"></MenuItem>
            <MenuItem Header="Redo"></MenuItem>
            <Separator>
              <Separator.Template>
                <ControlTemplate>
                  <Border CornerRadius="2" Padding="5" BorderBrush="Black" BorderThickness="1" Background="PaleGoldenrod">
                    <TextBlock FontWeight="Bold">
                      Editing Commands
                    </TextBlock>
                  </Border>
                </ControlTemplate>
              </Separator.Template>
            </Separator>
            <MenuItem Header="Cut"></MenuItem>
            <MenuItem Header="Copy"></MenuItem>
            <MenuItem Header="Paste"></MenuItem>
          </MenuItem>
        </Menu>
       <ListView HorizontalAlignment="Left" Width="239" Margin="0,148,0,45">
        <ListView.View>
         <GridView>
          <GridViewColumn Width="90" Header="Game" />
          <GridViewColumn Width="60" Header="Stakes" />
          <GridViewColumn Width="35" Header="Seats" />
         </GridView>
        </ListView.View>
       </ListView>
       <ListView Margin="239,148,218,45">
         <ListView.View>
            <GridView>
                <GridViewColumn Width="90" Header="Table" />
                <GridViewColumn Width="15" Header="Players" />
                <GridViewColumn Width="60" Header="Buy-in" />
                <GridViewColumn Width="50" Header="Speed" />
                <GridViewColumn Width="25" Header="H/Hr" />
                <GridViewColumn Width="35" Header="Avg Pot" />
               <GridViewColumn/>
            </GridView>
         </ListView.View>
       </ListView>
       <ListView Margin="546,148,0,45">
         <ListView.View>
            <GridView>
               <GridViewColumn Width="90" Header="Player" />
               <GridViewColumn Width="60" Header="City" />
               <GridViewColumn Width="35" Header="Chips" />
            </GridView>
         </ListView.View>
       </ListView>
       <TextBlock x:Name="LobbyServerLabel" HorizontalAlignment="Left" VerticalAlignment="Bottom" TextWrapping="Wrap" Text="Lobby Server - not connected"/>
       <TextBlock x:Name="GameServerLabel" HorizontalAlignment="Center" VerticalAlignment="Bottom" TextWrapping="Wrap"><Run Text="Game Server - not connected"/></TextBlock>
       <Label x:Name="SkinName1" Margin="8,54,0,0" VerticalAlignment="Top" Content="Attack" FontSize="36" Foreground="#FFD23C32" HorizontalAlignment="Left" FontFamily="Georgia" FontWeight="Bold"/>
       <Label x:Name="SkinName2" Margin="182.405,54,459,0" VerticalAlignment="Top" Content="Poker" FontSize="36" Foreground="#FFD23C32" FontFamily="Georgia" FontWeight="Bold"/>
       <Image VerticalAlignment="Top" Width="41.81" Height="51.519" Source="Spade1.png" Stretch="Fill" Margin="136.595,53.384,585.595,0"/>
   </Grid>
</Window>

我尝试过移动菜单定义，但这没有用。有人可以解释我如何在Expression Blend 3或C＃代码中指定，以使菜单的背景颜色仅适用于菜单而不是其他任何内容？

Answer 1

很容易解决。在“布局”选项卡下的“混合3”中，存在水平对齐和垂直对齐属性。这两个都将延伸。不知道他们是怎么做到的。但是，无论如何它们应分别设置为Left和Top。这使菜单位于左上角，解决了菜单试图控制整个窗口背景颜色的问题。