wpf 扩展标记应用 数据类型转

总是忘记语法，复制下来记录一下。

  <DoubleAnimationUsingKeyFrames Storyboard.TargetProperty="(UIElement.RenderTransform).(TransformGroup.Children)[1].(SkewTransform.AngleX)" Storyboard.TargetName="grid">

<TextBox Grid.Column="1" Text="{Binding Path=(ListBox.SelectedValue).(DoMain:GroupModel.RowID),ElementName=mylistbox}"
               IsReadOnly="True" Width="100" HorizontalAlignment="Left" VerticalAlignment="Center"/>
      <ListBox  x:Name="mylistbox" Grid.Row="2" Grid.ColumnSpan="2" SelectionMode="Single" IsSynchronizedWithCurrentItem="True"
                  ItemsSource="{Binding}">
          <ListBox.Template>
              <ControlTemplate>
                  <ScrollViewer HorizontalScrollBarVisibility="Disabled" VerticalScrollBarVisibility="Auto" >
                     <WrapPanel Orientation="Horizontal" IsItemsHost="True"/>
                  </ScrollViewer>
              </ControlTemplate>
          </ListBox.Template>
          <ListBox.ItemContainerStyle>
              <Style TargetType="ListBoxItem">
                  <EventSetter Event="ListBoxItem.PreviewMouseDoubleClick"
                               Handler="ListBoxItemDoubleClick" />
              </Style>
          </ListBox.ItemContainerStyle>
          <ListBox.ItemTemplate>
              <DataTemplate DataType="{x:Type DoMain:GroupModel}">
                  <Grid >
                      <Grid.RowDefinitions>
                          <RowDefinition Height="60"/>
                          <RowDefinition/>
                      </Grid.RowDefinitions>
                      <Image Source="{Binding Ico,Mode=OneWay,Converter={StaticResource imageConverter}}"/>
                      <Label Grid.Row="1" Content="{Binding GroupName}" />
                  </Grid>
              </DataTemplate>
          </ListBox.ItemTemplate>
      </ListBox>