我有一个用于在 Silverlight RIA 应用程序中显示数据的通用视图。基本上，视图接受一个参数，该参数是 RIA 获取数据所需的查询，并使用自动生成的字段显示数据。
这是视图的 XAML 代码的一部分。
<Grid Grid.Column="0">
<Grid.RowDefinitions>
<RowDefinition x:Name="DataGridRow"/>
<RowDefinition Height="Auto"/>
<RowDefinition x:Name="DataFormRow"/>
<RowDefinition Height="Auto" x:Name="EditRow"/>
</Grid.RowDefinitions>
<ria:DomainDataSource Name="SQLDomainDataContext" LoadingData="SQLDomainDataContext_LoadingData" LoadSize="45" SubmittedChanges="SQLDomainDataContext_SubmittedChanges" SubmittingChanges="SQLDomainDataContext_SubmittingChanges" LoadedData="SQLDomainDataContext_LoadedData">
<ria:DomainDataSource.SortDescriptors>
<ria:SortDescriptor Direction="Descending" PropertyPath="BaseProperties.CreatedOn" />
</ria:DomainDataSource.SortDescriptors>
</ria:DomainDataSource>
<Grid>
<Grid.RowDefinitions>
<RowDefinition />
<RowDefinition Height="Auto"/>
</Grid.RowDefinitions>
<sdk:DataGrid Grid.Row="0" AutoGenerateColumns="True" Name="dataGrid" ItemsSource="{Binding}" DataContext="{Binding Path=Data, Mode=TwoWay}" IsReadOnly="True" AutoGeneratingColumn="dataGrid_AutoGeneratingColumn" SelectionChanged="dataGrid_SelectionChanged" />
<custCont:LocalizedDataPager Grid.Row="1" x:Name="pager" Source="{Binding Path=Data}" PageSize="15" DisplayMode="FirstLastPreviousNext" />
</Grid>
<Border Grid.Row="1">
<Border.Background>
<LinearGradientBrush EndPoint="1,0.5" StartPoint="0,0.5">
<GradientStop Color="#FF9D9D9D" Offset="0" />
<GradientStop Color="#FFDBDBDB" Offset="1" />
</LinearGradientBrush>
</Border.Background>
<StackPanel Orientation="Horizontal" HorizontalAlignment="Center">
<Ellipse Fill="Black" HorizontalAlignment="Center" Width="4" Height="4" Margin="8,0"/>
<Ellipse Fill="Black" HorizontalAlignment="Center" Width="4" Height="4" Margin="8,0"/>
<Ellipse Fill="Black" HorizontalAlignment="Center" Width="4" Height="4" Margin="8,0"/>
</StackPanel>
</Border>
<sdk:GridSplitter Grid.Row="1" HorizontalAlignment="Stretch" Background="Transparent" Opacity="0"/>
<data:DataForm Grid.Row="2" VerticalAlignment="Stretch" HorizontalAlignment="Stretch" Name="DF" AutoCommit="False"
DataContext="{Binding Path=Data, Mode=TwoWay}" ItemsSource="{Binding}"
AutoGeneratingField="DF_AutoGeneratingField" EditEnded="DF_EditEnded" DeletingItem="DF_DeletingItem" Style="{StaticResource DataFormStyle}"/>
<Grid Grid.Row="3">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="Auto"/>
<ColumnDefinition />
<ColumnDefinition Width="Auto"/>
<ColumnDefinition Width="Auto"/>
<ColumnDefinition Width="Auto"/>
</Grid.ColumnDefinitions>
<Button Grid.Column="0" Name="btnHideDF" Content="{Binding Source={StaticResource ApplicationResources}, Path=ApplicationStrings.ShowEntities_HideDfBtn}" MinWidth="10" Margin="2" Click="btnHideDF_Click" />
<Button Grid.Column="2" Name="bRefresh" Content="{Binding Source={StaticResource ApplicationResources}, Path=ApplicationStrings.ShowEntities_RefreshBtn}" MinWidth="75" Margin="2" Click="bRefresh_Click" IsEnabled="{Binding Path=CanLoad}" />
<Button Grid.Column="3" Name="btnCacnelChanges" Content="{Binding Source={StaticResource ApplicationResources}, Path=ApplicationStrings.ShowEntities_CancelChangesBtn}" Margin="2" IsEnabled="{Binding Path=HasChanges}" Click="btnCacnelChanges_Click" Visibility="Collapsed" />
<Button Grid.Column="4" Name="bSubmit" Content="{Binding Source={StaticResource ApplicationResources}, Path=ApplicationStrings.ShowEntities_SubmitBtn}" MinWidth="75" Margin="2" IsEnabled="{Binding Path=HasChanges}" Click="bSubmit_Click" />
</Grid>
</Grid>
当视图以单数显示时Frame，一切正常。但是当它显示在有两个框架的页面上时，奇怪的事情开始发生。如果用户抓住拆分器并将其一直移动到顶部，超出帧边界，DataForm它将无限扩展。这不是一个大问题，但它看起来很丑，并且使底部的按钮消失了。
这里发生了什么？为什么会这样？我怎样才能防止这种行为？