ComboBox Tutorial Empty

<!-- ToskersCorner.com -->
    <Grid>
        <!-- Grid Definitions-->
        <Grid.RowDefinitions>
            <RowDefinition/>
            <RowDefinition/>
        </Grid.RowDefinitions>
        <Grid.ColumnDefinitions>
            <ColumnDefinition/>
            <ColumnDefinition/>
        </Grid.ColumnDefinitions>

        <!--ComboBox XAML-->
        <StackPanel Grid.Row="0" Grid.Column="0" Margin="5">
            <TextBlock>XAML Items</TextBlock>
        </StackPanel>

        <!--ComboBox Items Source-->
        <StackPanel Grid.Row="0" Grid.Column="1" Margin="5">
            <TextBlock>Names</TextBlock>

            <TextBlock>Colors</TextBlock>

        </StackPanel>

        <!--ComboBox Item Template-->
        <StackPanel Grid.Row="1" Grid.Column="0" Margin="5">
            <TextBlock>Templated Colors</TextBlock>

        </StackPanel>

        <!--ComboBox Selection-->
        <StackPanel Grid.Row="1" Grid.Column="1" Margin="5">
            <TextBlock>Cursor Styles</TextBlock>

        </StackPanel>
    </Grid>