绑定Listview后无法滚动行

Question

这是我在XAML中的代码

<ListView x:Name="OpportunitySearchResultLV" ItemsSource="{Binding OpportunityCollection}" SelectionMode="Single" AlternationCount="2" ItemContainerStyle="{StaticResource alternatingListViewItemStyle}" SelectedItem="{Binding Path=SelectedOpportunitySearchedItem}" Margin="1" Grid.Row="3" Grid.Column="0" >
                <ListView.InputBindings>
                    <MouseBinding Command="{Binding SelectOpportunitySearchDetailsCommand}" MouseAction="LeftClick"></MouseBinding>
                    <KeyBinding Command="{Binding SelectOpportunitySearchDetailsCommand}" Key="Up"></KeyBinding>
                    <KeyBinding Command="{Binding SelectOpportunitySearchDetailsCommand}" Key="Down"></KeyBinding>
                    <KeyBinding Command="{Binding OpportunitySearchDetailsLeaveCommand}" Key="Tab"></KeyBinding>
                </ListView.InputBindings>               
                <ListView.View>
                    <GridView ColumnHeaderContainerStyle="{StaticResource NOGridViewHeader}" >
                        <GridViewColumn>
                            <GridViewColumn.CellTemplate>
                                <DataTemplate>
                                    <StackPanel Orientation="Horizontal">
                                        <Viewbox>
                                            <TextBlock Text="{Binding OpportunityTitle}"></TextBlock>
                                        </Viewbox>
                                    </StackPanel>
                                </DataTemplate>
                            </GridViewColumn.CellTemplate>
                            <msia:Interaction.Triggers>
                                <msia:EventTrigger EventName="MouseMove">
                                    <msia:InvokeCommandAction Command="{Binding SelectOpportunitySearchDetailsCommand}" />
                                </msia:EventTrigger>
                            </msia:Interaction.Triggers>
                        </GridViewColumn>                        
                    </GridView>                    
                </ListView.View>                
            </ListView>

现在您可以看到我正在绑定（MouseBinding和KeyBinding），但由于我使用的是upkey和downkey，因此我无法遍历listview中的行。它仅限于一行。任何人都可以告诉我为什么会这样吗？我的绑定工作完美，并按照预期的结果。另外我想补充一点，我没有找到任何方法来绑定GridViewColumn所以我绑定（MouseBinding和KeyBinding）到Listview。这是正确的方式还是有更好的绑定方式？感谢你.Payel Mukherjee Bangalore India