当列表框中的一个项目高亮显示时刷新列表框时出错

我目前正在做一个项目，它有一个列表框，代表连接到服务器的玩家。我对列表框项进行了模板化，以便它们包含玩家的图片及其名称，当鼠标进入该区域时，这些元素周围会出现灰色边框。

我的问题是，当列表更新时，如果用户将鼠标放在其中一个列表框项上(假设当新用户连接到服务器时)，Visual Studio会抛出一个与鼠标放置机制有关的错误，告诉我它无法在XAML中找到名称。

这是我的列表框项模板

<ListBox.ItemTemplate>
    <DataTemplate >
        <Border  BorderThickness="3" CornerRadius="3" Margin="2,2,0,0" Cursor="Hand">
            <Border.BorderBrush  >
                <SolidColorBrush   x:Name="BorderBackgroundColor" /> 
            </Border.BorderBrush >
            <Grid VerticalAlignment="Center" Margin="0,0,0,0">
                <Grid.Background>
                    <SolidColorBrush  x:Name="GridBackgroundColor"  />
                </Grid.Background>
                <Grid.Triggers >
                    <EventTrigger RoutedEvent="Grid.MouseEnter" >
                        <BeginStoryboard>
                            <Storyboard>
                                <ColorAnimation Duration="0:0:0.2" Storyboard.TargetName="GridBackgroundColor" Storyboard.TargetProperty="Color"  To="Gray" />
                                <ColorAnimation Duration="0:0:0.2" Storyboard.TargetName="BorderBackgroundColor" Storyboard.TargetProperty="Color"  To="Gray" />
                            </Storyboard>
                        </BeginStoryboard>
                    </EventTrigger>
                    <EventTrigger RoutedEvent="Grid.MouseLeave" >
                        <BeginStoryboard>
                            <Storyboard>
                                <ColorAnimation Duration="0:0:0.2" Storyboard.TargetName="GridBackgroundColor" Storyboard.TargetProperty="Color"  To="Transparent" />
                                <ColorAnimation Duration="0:0:0.2" Storyboard.TargetName="BorderBackgroundColor" Storyboard.TargetProperty="Color"  To="Transparent" />
                            </Storyboard>
                        </BeginStoryboard>
                    </EventTrigger>
                </Grid.Triggers>
                <Grid.ColumnDefinitions>
                    <ColumnDefinition Width="Auto" />
                    <ColumnDefinition />
                </Grid.ColumnDefinitions>
                <Grid.RowDefinitions>
                    <RowDefinition   />
                </Grid.RowDefinitions>
                <Border Grid.Column="0" Grid.Row="0" BorderThickness="2" CornerRadius="2" Height="30"  >
                    <Border.BorderBrush>
                        <MultiBinding Converter="{StaticResource StateToBorderConverter}" >
                            <Binding RelativeSource="{RelativeSource Mode=FindAncestor, AncestorType={x:Type UserControl}}"  />
                            <Binding  Path="State" />
                        </MultiBinding>
                    </Border.BorderBrush>
                    <Image Source="{Binding Path=imagePath}" VerticalAlignment="Bottom" HorizontalAlignment="Left" />
                </Border>
                <Label Grid.Column="1" Grid.Row="0" Content="{Binding Path=profileName}"  VerticalContentAlignment="Bottom" HorizontalAlignment="Left" VerticalAlignment="Bottom"  Margin="5,0,0,0" FontSize="15" />
            </Grid>
        </Border>
    </DataTemplate>
</ListBox.ItemTemplate>

这是刷新方法

    private void ActualisePlayerList( PlayerListMessage playerListMessage )
    {
        playersProfileInfo.Clear();
        foreach (Utilitaire.ClientProperties oneProperty in playerListMessage.Clients)
        {
            string profileName = oneProperty.Username;
            string imagePath = Directory.GetCurrentDirectory() + "//Profile" + oneProperty.Username.ToLower() + ".jpg";
            if (!File.Exists(imagePath))
            {
                imagePath = "ImageRessources/anonymous-icon.jpg";
            }
            playersProfileInfo.Add(new ProfileContainer(imagePath, profileName, oneProperty.State));
        }
       PlayersListBox.ItemsSource = playersProfileInfo; 
       PlayersListBox.Items.Refresh();
       Filter("");
    }

这是抛出的顺序

 Cannot find the name 'GridBackgroundColor' in the name range of 'System.Windows.Controls.Grid'.

如前所述，这个错误是在调用ActualisePlayerList之后触发的。这个错误描述是翻译的，如果没有什么印象，请告诉我。不管怎样，知道它为什么会出现吗?是否有一些我不知道的关于模板列表框项的触发器?当项目已经被删除时，是否会调用淡出动画?