让bing地图全部铺设(Make bing maps streetch all the may)

 我怎样才能让bing地图占据下面的所有位置。 
 
 第一行是名称第二行是姓氏：第三行是地图。 
 
 我希望bing map可以从第三行到最后一行。 地图应位于第1列和第2列 
 
    <!--LayoutRoot is the root grid where all page content is placed-->
<Grid x:Name="LayoutRoot" Background="Transparent">
    <Grid.RowDefinitions>
        <RowDefinition Height="Auto"/>
        <RowDefinition Height="*"/>
    </Grid.RowDefinitions>

    <!--TitlePanel contains the name of the application and page title-->
    <StackPanel x:Name="TitlePanel" Grid.Row="0" Margin="12,17,0,28">
        <TextBlock x:Name="ApplicationTitle" Text="MY APPLICATION" Style="{StaticResource PhoneTextNormalStyle}"/>
        <TextBlock x:Name="PageTitle" Text="page name" Margin="9,-7,0,0" Style="{StaticResource PhoneTextTitle1Style}"/>
    </StackPanel>

    <!--ContentPanel - place additional content here-->
    <Grid x:Name="ContentPanel" Grid.Row="1" Margin="12,0,12,0">
        <Grid.RowDefinitions>
            <RowDefinition Height="Auto"></RowDefinition>
            <RowDefinition Height="Auto"></RowDefinition>
            <RowDefinition Height="Auto"></RowDefinition>
        </Grid.RowDefinitions>
        <Grid.ColumnDefinitions>
            <ColumnDefinition Width="200"></ColumnDefinition>
            <ColumnDefinition Width="Auto"></ColumnDefinition>
        </Grid.ColumnDefinitions>
        <TextBlock Grid.Row="0" Grid.Column="0">First name:</TextBlock>
        <TextBlock Grid.Row="1" Grid.Column="0">Last name:</TextBlock>
        <TextBlock Grid.Row="0" Grid.Column="1">name</TextBlock>
        <TextBlock Grid.Row="1" Grid.Column="1">name</TextBlock>
        <my:Map Grid.Row="2" Grid.Column="1" Width="Auto" HorizontalAlignment="Stretch" VerticalAlignment="Stretch" />
    </Grid>
</Grid>

How can I make that bing maps take all place below.
 
First row is name Second row is last name: Third name is map.
 
I want that bing maps takes everything from third row to all the way down. Maps should be in column 1 and column 2
 
    <!--LayoutRoot is the root grid where all page content is placed-->
<Grid x:Name="LayoutRoot" Background="Transparent">
    <Grid.RowDefinitions>
        <RowDefinition Height="Auto"/>
        <RowDefinition Height="*"/>
    </Grid.RowDefinitions>

    <!--TitlePanel contains the name of the application and page title-->
    <StackPanel x:Name="TitlePanel" Grid.Row="0" Margin="12,17,0,28">
        <TextBlock x:Name="ApplicationTitle" Text="MY APPLICATION" Style="{StaticResource PhoneTextNormalStyle}"/>
        <TextBlock x:Name="PageTitle" Text="page name" Margin="9,-7,0,0" Style="{StaticResource PhoneTextTitle1Style}"/>
    </StackPanel>

    <!--ContentPanel - place additional content here-->
    <Grid x:Name="ContentPanel" Grid.Row="1" Margin="12,0,12,0">
        <Grid.RowDefinitions>
            <RowDefinition Height="Auto"></RowDefinition>
            <RowDefinition Height="Auto"></RowDefinition>
            <RowDefinition Height="Auto"></RowDefinition>
        </Grid.RowDefinitions>
        <Grid.ColumnDefinitions>
            <ColumnDefinition Width="200"></ColumnDefinition>
            <ColumnDefinition Width="Auto"></ColumnDefinition>
        </Grid.ColumnDefinitions>
        <TextBlock Grid.Row="0" Grid.Column="0">First name:</TextBlock>
        <TextBlock Grid.Row="1" Grid.Column="0">Last name:</TextBlock>
        <TextBlock Grid.Row="0" Grid.Column="1">name</TextBlock>
        <TextBlock Grid.Row="1" Grid.Column="1">name</TextBlock>
        <my:Map Grid.Row="2" Grid.Column="1" Width="Auto" HorizontalAlignment="Stretch" VerticalAlignment="Stretch" />
    </Grid>
</Grid>

原文：https://stackoverflow.com/questions/20489442