WPF模板错误 - "在'System.Windows.Baml2006.TypeConverterMarkupExtension'上提供值引发异常."

Question

我刚刚开始尝试使用WPF模板和样式,我不确定我做错了什么.下面的目标是交替菜单中选项的颜色.代码可以正常工作,但是当我为"MenuChoiceOdd"的第二段复制并粘贴/重命名时,我收到以下错误:

>在'System.Windows.Baml2006.TypeConverterMarkupExtension'上提供值引发异常.

代码示例:

<Window x:Class="WpfApplication1.Template_Testing"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Title="Template_Testing" Height="300" Width="300">
    <Grid>
        <Grid.Resources>
            <ControlTemplate x:Key="MenuChoiceEven">
                <Border BorderThickness="1" BorderBrush="#FF4A5D80">
                <TextBlock Height="Auto" HorizontalAlignment="Stretch" Margin="0"  Width="Auto" FontSize="14" Foreground="SlateGray" TextAlignment="Left" AllowDrop="True" Text="{Binding Path=Content, RelativeSource={RelativeSource TemplatedParent}}">
                    <TextBlock.Background>
                        <LinearGradientBrush EndPoint="0.5,1" StartPoint="0.5,0">
                            <GradientStop Color="White" Offset="0" />
                            <GradientStop Color="#FFC2CCDB" Offset="1" />
                        </LinearGradientBrush>
                    </TextBlock.Background>
                </TextBlock>
                </Border>
            </ControlTemplate>
            <ControlTemplate x:Key="MenuChoiceOdd">
                <Border BorderThickness="1" BorderBrush="#FF4A5D80">
                    <TextBlock Height="Auto" HorizontalAlignment="Stretch" Margin="0"  Width="Auto" FontSize="14" Foreground="SlateGray" TextAlignment="Left" AllowDrop="True" Text="{Binding Path=Content, RelativeSource={RelativeSource TemplatedParent}}">
                    <TextBlock.Background>
                        <LinearGradientBrush EndPoint="0.5,1" StartPoint="0.5,0">
                            <GradientStop Color="White" Offset="0" />
                            <GradientStop Color="##FFCBCBCB" Offset="1" />
                        </LinearGradientBrush>
                    </TextBlock.Background>
                    </TextBlock>
                </Border>
            </ControlTemplate>            
        </Grid.Resources>
        <Border BorderBrush="SlateGray" BorderThickness="2" Margin="10" CornerRadius="10" Background="LightSteelBlue" Width="200">
            <StackPanel Margin="4">
                <TextBlock Height="Auto" HorizontalAlignment="Stretch" Margin="2,2,2,0" Name="MenuHeaderTextBlock" Text="TextBlock" Width="Auto" FontSize="16" Foreground="PaleGoldenrod" TextAlignment="Left" Padding="10" FontWeight="Bold"><TextBlock.Background><LinearGradientBrush EndPoint="0.5,1" StartPoint="0.5,0"><GradientStop Color="LightSlateGray" Offset="0" /><GradientStop Color="DarkSlateGray" Offset="1" /></LinearGradientBrush></TextBlock.Background></TextBlock>
                <StackPanel Height="Auto" HorizontalAlignment="Stretch" Margin="2,0,2,0" Name="MenuChoicesStackPanel" VerticalAlignment="Top" Width="Auto">
                    <Button Template="{StaticResource MenuChoiceEven}" Content="Test Even menu element" />
                    <Button Template="{StaticResource MenuChoiceOdd}"  Content="Test odd menu element" />
                </StackPanel>
            </StackPanel>
        </Border>
    </Grid>
</Window>

我究竟做错了什么？

Answer 1

是的,星期一......

当我复制粘贴来自另一个控件的颜色字符串时,它在前缀中放入两个"##":

<GradientStop Color="##FFCBCBCB" Offset="1" />

仍然是一个糟糕的错误消息.

Answer 2

与其他人类似 - 这个可怕的错误消息只是意味着我的xaml中出现语法错误:

<CheckBox Height="" IsChecked="{Binding IsChecked, Mode=TwoWay}"  Width="80">

注意我没有填写高度值..