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Как добраться до Grid x: Name = "ControlPanelGrid"

2011-12-20 2 views
0

У меня есть следующий xaml, и я пытаюсь добраться до Grid, чтобы сделать его невидимым в какой-то момент моего кода, если код достигнет этого. Будучи новым для .net и Silverlight и XAML Я не знаю, почему мой код позади не находит Сетка ControlPanelКак добраться до Grid x: Name = "ControlPanelGrid"

смотрите мой XAML код здесь

<UserControl 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" xmlns:smf="clr-namespace:Microsoft.SilverlightMediaFramework.Core;assembly=Microsoft.SilverlightMediaFramework.Core" xmlns:smfm="clr-namespace:Microsoft.SilverlightMediaFramework.Core.Media;assembly=Microsoft.SilverlightMediaFramework.Core" xmlns:plugins3d="clr-namespace:Microsoft.SilverlightMediaFramework.Plugins.Primitives.S3D;assembly=Microsoft.SilverlightMediaFramework.Plugins" xmlns:Microsoft_SilverlightMediaFramework_Utilities_Offline="clr-namespace:Microsoft.SilverlightMediaFramework.Utilities.Offline;assembly=Microsoft.SilverlightMediaFramework.Utilities" xmlns:System="clr-namespace:System;assembly=mscorlib" xmlns:smf_util="http://schemas.microsoft.com/smf/2010/xaml/converters" xmlns:smf_accesscontrols="http://schemas.microsoft.com/smf/2010/xaml/accesscontrols" xmlns:i="http://schemas.microsoft.com/expression/2010/interactivity" xmlns:ei="http://schemas.microsoft.com/expression/2010/interactions" xmlns:ec="http://schemas.microsoft.com/expression/2010/controls"  
    x:Class="SPlayer.MainPage" 
    d:DesignHeight="300" d:DesignWidth="400" mc:Ignorable="d"> 

    <UserControl.Resources> 

      ................ 
      ................ 

      <Style x:Key="SMFPlayerStyle1" TargetType="smf:SMFPlayer"> 
      <Setter Property="Background" Value="Black"/> 
      <Setter Property="HorizontalAlignment" Value="Stretch"/> 
      <Setter Property="VerticalAlignment" Value="Stretch"/> 
      <Setter Property="Template"> 
       ....... 
       ...... 
          <Grid x:Name="ControlPanelGrid" Margin="8,-26,8,13" Grid.Row="1" Grid.RowSpan="4" Opacity="0"> 
           <Rectangle x:Name="ControlPanel" Margin="2,3,3,5" Stroke="#FF474747" RadiusY="4" RadiusX="4" Opacity="0.9" StrokeThickness="0.5"> 
            <Rectangle.Effect> 
             <DropShadowEffect Opacity="0.26" BlurRadius="7" Direction="319"/> 
            </Rectangle.Effect> 
            <Rectangle.Fill> 
             <LinearGradientBrush EndPoint="0.5,1" StartPoint="0.5,0"> 
              <GradientStop Color="#FF191919" Offset="0.936"/> 
              <GradientStop Color="#FF454545" Offset="0.187"/> 
              <GradientStop Color="#FF191919"/> 
             </LinearGradientBrush> 
            </Rectangle.Fill> 
           </Rectangle> 
           <Grid x:Name="timelinecontrols" Grid.ColumnSpan="1" Margin="0,0,165,13" d:LayoutOverrides="GridBox" d:IsHidden="True"> 
            <Grid.ColumnDefinitions> 
             <ColumnDefinition/> 
             <ColumnDefinition Width="Auto"/> 
             <ColumnDefinition Width="Auto"/> 
            </Grid.ColumnDefinitions> 
            <smf:Timeline x:Name="TimelineElement" Cursor="Hand" Chapters="{TemplateBinding Chapters}" EndPosition="{TemplateBinding EndPosition}" Foreground="{x:Null}" HorizontalContentAlignment="Stretch" IsLive="{TemplateBinding IsMediaLive}" LivePosition="{TemplateBinding LivePosition}" Margin="80,0,170,-10" StartPosition="{TemplateBinding StartPosition}" TimelineMarkers="{TemplateBinding TimelineMarkers}" VerticalAlignment="Center" Style="{StaticResource TimelineStyle1}" /> 
            <Border x:Name="TimeContainer" BorderThickness="1" Grid.Column="1" HorizontalAlignment="Left" Margin="0" Opacity="0"> 
             <Grid Height="28" MaxHeight="28" MinWidth="60" MinHeight="28" UseLayoutRounding="True"> 
              <Grid> 
               <Grid.ColumnDefinitions> 
                <ColumnDefinition Width="0.25*"/> 
                <ColumnDefinition Width="0.367*"/> 
                <ColumnDefinition Width="0.383*"/> 
               </Grid.ColumnDefinitions> 
               <TextBlock x:Name="CurrentPositionElement" Foreground="#FFC1C1C1" FontSize="9" HorizontalAlignment="Left" Padding="8,0,0,0" TextAlignment="Center" Text="{Binding PlaybackPosition, Converter={StaticResource TimeSpanValueConverter}, RelativeSource={RelativeSource TemplatedParent}}" VerticalAlignment="Center"/> 
               <TextBlock x:Name="TimeSeparatorElement" Grid.Column="1" Foreground="#FFFDFAFA" FontSize="9" HorizontalAlignment="Center" Margin="3,0" Opacity="0.4" Text="|" VerticalAlignment="Center"/> 
               <TextBlock x:Name="CurrentDurationElement" Grid.Column="2" Foreground="#FFFDFDFD" FontSize="9" HorizontalAlignment="Left" Opacity="0.4" Padding="0,0,8,0" Text="{Binding EndPosition, Converter={StaticResource TimeSpanValueConverter}, RelativeSource={RelativeSource TemplatedParent}}" VerticalAlignment="Center"/> 
              </Grid> 
             </Grid> 
            </Border> 
           </Grid> 
           <Image x:Name="btnVloume" Margin="0,-1,383,5" Source="volume.png" Stretch="Fill" Height="49" d:LayoutOverrides="Width, GridBox" Width="53" HorizontalAlignment="Right" d:IsHidden="True"/> 
           <smf:VolumeControl x:Name="VolumeElement" VolumeLevel=".5" RenderTransformOrigin="0.5,0.5" Margin="0,-46.5,326.074,-50.5" UseLayoutRounding="False" d:LayoutRounding="Auto" HorizontalAlignment="Right" Width="36" Style="{StaticResource VolumeControlStyle1}" d:IsHidden="True" > 
            <smf:VolumeControl.RenderTransform> 
             <CompositeTransform Rotation="90.02"/> 
            </smf:VolumeControl.RenderTransform> 
           </smf:VolumeControl> 
           <ToggleButton x:Name="FullScreenToggleElement" BorderThickness="0" Cursor="Hand" HorizontalAlignment="Right" HorizontalContentAlignment="Stretch" Height="28" Margin="0,14,153,11" Padding="0" Style="{StaticResource FullScreenElementStyle}" VerticalContentAlignment="Stretch" Width="29" d:LayoutOverrides="HorizontalAlignment" Opacity="0"/> 
           <Image x:Name="_3D" HorizontalAlignment="Right" Margin="0,1,180,3" Source="3D.png" Stretch="Fill" Width="53" Height="49" Cursor="Hand" Opacity="0.8" MouseLeftButtonUp="_3D_MouseLeftButtonUp"> 
            <i:Interaction.Triggers> 
             <i:EventTrigger EventName="MouseEnter"> 
              <ei:ChangePropertyAction x:Name="_3d_100_Opacity" PropertyName="Opacity" Value="1"/> 
             </i:EventTrigger> 
             <i:EventTrigger EventName="MouseLeave"> 
              <ei:ChangePropertyAction x:Name="_3d_80_Opacity" PropertyName="Opacity" Value="0.8"/> 
             </i:EventTrigger> 
            </i:Interaction.Triggers> 
           </Image> 
           <Image x:Name="analytics" HorizontalAlignment="Left" Margin="980,3,0,-1" Source="analytics.png" Stretch="Fill" Width="53" Cursor="Hand" Opacity="0.7"> 
            <i:Interaction.Triggers> 
             <i:EventTrigger EventName="MouseEnter"> 
              <ei:ChangePropertyAction x:Name="analytics_MouseEnter" PropertyName="Opacity" Value="1"/> 
             </i:EventTrigger> 
             <i:EventTrigger EventName="MouseLeave"> 
              <ei:ChangePropertyAction x:Name="analytics_MouseLeave" PropertyName="Opacity" Value="0.7"/> 
             </i:EventTrigger> 
            </i:Interaction.Triggers> 
           </Image> 
           <Image x:Name="btn_fullscreen" HorizontalAlignment="Right" Margin="0,0,140,4" Source="full_screen.png" Stretch="Fill" Width="53" Height="49" Opacity="0.8" Cursor="Hand"> 
            <i:Interaction.Triggers> 
             <i:EventTrigger EventName="MouseEnter"> 
              <ei:ChangePropertyAction x:Name="btn_fullscreen_mouseOver" PropertyName="Opacity" Value="1"/> 
             </i:EventTrigger> 
             <i:EventTrigger EventName="MouseLeave"> 
              <ei:ChangePropertyAction x:Name="btn_fullscreen_mouseOut" PropertyName="Opacity" Value="0.8"/> 
             </i:EventTrigger> 
            </i:Interaction.Triggers> 
           </Image> 
           <smf:PlayElement x:Name="PlayElement" Content="PlayElement" PlayState="{TemplateBinding PlayState}" HorizontalAlignment="Left" Height="51" Margin="9,2,0,0" Style="{StaticResource PlayElementStyle1}" Width="53" Cursor="Hand" /> 
           <Image Margin="0,4,5,8" Source="logo.png" Stretch="Fill" HorizontalAlignment="Right" Width="96"/> 
          </Grid> 
          <Grid x:Name="ControllerContainer" Height="40" Grid.Row="4" Visibility="{Binding IsControlStripVisible, Converter={StaticResource BoolToVisibilityConverter}, RelativeSource={RelativeSource TemplatedParent}}" Opacity="0"> 
           <Grid.Background> 
            <LinearGradientBrush EndPoint="0.481481,1" StartPoint="0.481481,0.00636957"> 
             <GradientStop Color="#FF78808B" Offset="0"/> 
             <GradientStop Color="#FF58606A" Offset="0.287958"/> 
             <GradientStop Color="#FF38424E" Offset="0.680628"/> 
             <GradientStop Color="#FF333D49" Offset="0.984293"/> 
            </LinearGradientBrush> 
           </Grid.Background> 
           <Grid.ColumnDefinitions> 
            <ColumnDefinition Width="Auto"/> 
            <ColumnDefinition Width="Auto"/> 
            <ColumnDefinition/> 
            <ColumnDefinition Width="Auto"/> 
            <ColumnDefinition Width="Auto"/> 
            <ColumnDefinition Width="Auto"/> 
            <ColumnDefinition Width="Auto"/> 
           </Grid.ColumnDefinitions> 
           <Grid x:Name="playercontrols" Grid.ColumnSpan="1" Margin="19,0,16,0" Opacity="0"> 
            <Grid.ColumnDefinitions> 
             <ColumnDefinition Width="Auto"/> 
             <ColumnDefinition Width="Auto"/> 
             <ColumnDefinition Width="Auto"/> 
             <ColumnDefinition Width="Auto"/> 
             <ColumnDefinition Width="Auto"/> 
            </Grid.ColumnDefinitions> 
            <Button x:Name="ReplayElement" BorderThickness="0" HorizontalAlignment="Right" Height="28" Margin="0" Style="{StaticResource ReplayButtonStyle}" Width="36"/> 
            <Button x:Name="RewindElement" BorderThickness="0,1,0,0" Grid.Column="1" HorizontalAlignment="Right" Height="28" Margin="0" Style="{StaticResource RWButtonStyle}" Width="36"> 
             <Button.BorderBrush> 
              <LinearGradientBrush EndPoint="0.5,1" StartPoint="0.5,0"> 
               <GradientStop Color="#FFA3AEB9" Offset="0"/> 
               <GradientStop Color="#FF8399A9" Offset="0.375"/> 
               <GradientStop Color="#FF718597" Offset="0.375"/> 
               <GradientStop Color="#FF617584" Offset="1"/> 
              </LinearGradientBrush> 
             </Button.BorderBrush> 
            </Button> 
            <smf:PlayElement Cursor="Hand" Grid.Column="2" Margin="0" PlayState="{TemplateBinding PlayState}" Width="60"/> 
            <Button x:Name="FastForwardElement" BorderThickness="0" Grid.Column="3" HorizontalAlignment="Right" Height="28" Margin="0" Style="{StaticResource FFButtonStyle}" Width="36"/> 
            <ToggleButton x:Name="SlowMotionElement" Grid.Column="4" HorizontalAlignment="Right" Height="28" Margin="0" Style="{StaticResource SlowMotionButtonStyle}" ToolTipService.ToolTip="Slow Motion" Width="36"/> 
           </Grid> 
           <Grid x:Name="divider1" Grid.Column="1" HorizontalAlignment="Left" Width="2"> 
            <Path Data="M245.16667,0 L245.16667,39.109009" HorizontalAlignment="Left" Stretch="Fill" UseLayoutRounding="False" Width="1"> 
             <Path.Stroke> 
              <LinearGradientBrush EndPoint="0.5,1" StartPoint="0.5,0"> 
               <GradientStop Color="Black" Offset="0.509"/> 
               <GradientStop Color="#FF343E4A" Offset="1"/> 
               <GradientStop Color="#FF757D87" Offset="0"/> 
              </LinearGradientBrush> 
             </Path.Stroke> 
            </Path> 
            <Path Data="M245.16667,0 L245.16667,39.109009" HorizontalAlignment="Left" Margin="1,0,0,0" Stretch="Fill" UseLayoutRounding="False" Width="1"> 
             <Path.Stroke> 
              <LinearGradientBrush EndPoint="0.5,1" StartPoint="0.5,0"> 
               <GradientStop Color="#FFFDFEFF" Offset="0.509"/> 
               <GradientStop Color="#FF36404C" Offset="1"/> 
               <GradientStop Color="#FF757D87" Offset="0"/> 
              </LinearGradientBrush> 
             </Path.Stroke> 
            </Path> 
           </Grid> 
           <Grid x:Name="divider2" Grid.Column="3" HorizontalAlignment="Left" Width="2" Opacity="0"> 
            <Path Data="M245.16667,0 L245.16667,39.109009" HorizontalAlignment="Left" Stretch="Fill" UseLayoutRounding="False" Width="1"> 
             <Path.Stroke> 
              <LinearGradientBrush EndPoint="0.5,1" StartPoint="0.5,0"> 
               <GradientStop Color="Black" Offset="0.509"/> 
               <GradientStop Color="#FF343E4A" Offset="1"/> 
               <GradientStop Color="#FF757D87" Offset="0"/> 
              </LinearGradientBrush> 
             </Path.Stroke> 
            </Path> 
            <Path Data="M245.16667,0 L245.16667,39.109009" HorizontalAlignment="Left" Margin="1,0,0,0" Stretch="Fill" UseLayoutRounding="False" Width="1"> 
             <Path.Stroke> 
              <LinearGradientBrush EndPoint="0.5,1" StartPoint="0.5,0"> 
               <GradientStop Color="#FFFDFEFF" Offset="0.509"/> 
               <GradientStop Color="#FF343E4A" Offset="1"/> 
               <GradientStop Color="#FF757D87" Offset="0.009"/> 
              </LinearGradientBrush> 
             </Path.Stroke> 
            </Path> 
           </Grid> 
           <Grid x:Name="functioncontrols" Grid.ColumnSpan="1" Grid.Column="4" Margin="16,0" Opacity="0"> 
            <Grid.ColumnDefinitions> 
             <ColumnDefinition Width="Auto"/> 
             <ColumnDefinition Width="Auto"/> 
             <ColumnDefinition Width="Auto"/> 
             <ColumnDefinition Width="Auto"/> 
             <ColumnDefinition Width="Auto"/> 
             <ColumnDefinition Width="Auto"/> 
            </Grid.ColumnDefinitions> 
            <ToggleButton x:Name="CaptionToggleElement" Cursor="Hand" Content="CC" Grid.Column="0" HorizontalAlignment="Right" Height="28" Margin="0" Style="{StaticResource CaptionDisplayToggleButtonStyle}" ToolTipService.ToolTip="Closed Captions" Width="36" d:LayoutOverrides="GridBox"/> 
            <ToggleButton x:Name="GraphToggleElement" Cursor="Hand" Content="G" Grid.Column="1" Height="28" Style="{StaticResource PlayerGraphButtonStyle}" ToolTipService.ToolTip="Toggle Graph" Width="36"/> 
            <ComboBox x:Name="AudioStreamSelectionElement" BorderBrush="{StaticResource btnBaseGradient}" Background="Black" Cursor="Hand" Grid.ColumnSpan="1" Grid.Column="3" Foreground="Black" HorizontalAlignment="Right" Height="28" ItemsSource="{TemplateBinding AvailableAudioStreams}" Margin="0" Style="{StaticResource AudioStreamMenu}" SelectedItem="{TemplateBinding SelectedAudioStream}" Width="110"> 
             <ComboBox.ItemTemplate> 
              <DataTemplate> 
               <TextBlock Foreground="{StaticResource iconGradient}" Text="{Binding Name}"/> 
              </DataTemplate> 
             </ComboBox.ItemTemplate> 
            </ComboBox> 
           </Grid> 
           <Grid x:Name="divider3" Grid.Column="5" HorizontalAlignment="Left" Height="40" Margin="0" Width="2" Opacity="0"> 
            <Path Data="M245.16667,0 L245.16667,39.109009" HorizontalAlignment="Left" Stretch="Fill" UseLayoutRounding="False" Width="1"> 
             <Path.Stroke> 
              <LinearGradientBrush EndPoint="0.5,1" StartPoint="0.5,0"> 
               <GradientStop Color="Black" Offset="0.509"/> 
               <GradientStop Color="#FF343E4A" Offset="1"/> 
               <GradientStop Color="#FF757D87" Offset="0"/> 
              </LinearGradientBrush> 
             </Path.Stroke> 
            </Path> 
            <Path Data="M245.16667,0 L245.16667,39.109009" HorizontalAlignment="Left" Margin="1,0,0,0" Stretch="Fill" UseLayoutRounding="False" Width="1"> 
             <Path.Stroke> 
              <LinearGradientBrush EndPoint="0.5,1" StartPoint="0.5,0"> 
               <GradientStop Color="#FFFDFEFF" Offset="0.509"/> 
               <GradientStop Color="#FF343E4A" Offset="1"/> 
               <GradientStop Color="#FF757D87" Offset="0"/> 
              </LinearGradientBrush> 
             </Path.Stroke> 
            </Path> 
           </Grid> 
           <smf:BitrateMonitor x:Name="BitrateMonitorElement" Grid.Column="6" HighDefinitionBitrate="{TemplateBinding HighDefinitionBitrate}" Height="40" Margin="5,0,7,0" MaximumPlaybackBitrate="{TemplateBinding MaximumPlaybackBitrate}" PlaybackBitrate="{TemplateBinding PlaybackBitrate}" Width="36" Opacity="0"/> 
          </Grid> 
         </Grid> 
        </ControlTemplate> 
       </Setter.Value> 
      </Setter> 
     </Style> 
    </UserControl.Resources> 


     <Grid x:Name="LayoutRoot" Background="White"> 
     <smf:SMFPlayer x:Name="smfPlayer" Style="{StaticResource SMFPlayerStyle1}" PlaylistVisibility="Disabled"/> 

    </Grid> 
</UserControl>

вот мой код позади файла

namespace SPlayer 
{ 
    public partial class MainPage : UserControl 
    { 
     ......... 

     public MainPage(StartupEventArgs e) 
     { 
......

, как вы можете видеть мое пространство имен является правильным в XAML, но я до сих пор не может доступ сетки <Grid x:Name="ControlPanelGrid" Margin="8,-26,8,13" Grid.Row="1" Grid.RowSpan="4" Opacity="0">

благодаря

источник

2011-12-20 Autolycus

ответ

1

В коде C# вы можете использовать FindChild<T> найдены в this SO question

Это будет выглядеть примерно так:

Grid controlPanelGrid = UIHelper.FindChild<Grid>(smfPlayer, "ControlPanelGrid");

источник

2011-12-21 10:11:24

+0

Это говорит UIHelper не существует в этом contezxt – Autolycus

+0

Заменить UIHelper с любым именем класса вы положили FindChild . Чтобы убедиться: вы скопировали метод FindChild по ссылке? –

-1

Для уточнения: ваша сетка ControlPanelGrid является ребенком SMFPlayerStyle1 в средствах вашего UserControl?

<UserControl.Resources> 
    <Style x:Key="SMFPlayerStyle1" TargetType="smf:SMFPlayer"> 
    [...] 
    <Grid x:Name="ControlPanelGrid" Margin="8,-26,8,13" Grid.Row="1" Grid.RowSpan="4" Opacity="0"> 
    [...] 
    </Style> 
</UserControl.Resources>

Чтобы получить доступ к этому элементу программно, вам нужно нырнуть графа объектов, начиная с SMFPlayerStyle1.... В зависимости от структуры объекта SMFPlayer вы можете получить к нему доступ через свойство этого.

источник

2011-12-21 10:03:44 makopp

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