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我有一个ListView带有 aGridViewColumn的图像,它使用转换器将 a 转换bool 为 a ImageSource。它工作了几个月,现在它突然只显示一个红点而不是我的图像。

转换器:

    public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
{

  if ((bool)value)
    return new BitmapImage(new Uri(@"/Dionysus.Styling;component/Images/Actions-dialog-ok-apply-icon.png", UriKind.RelativeOrAbsolute));
  else return 
    null;

}

xml:

                    <GridViewColumn Header="">
                    <GridViewColumn.CellTemplate>
                        <DataTemplate>
                            <Image Source="{Binding Path=IsDelayedOrPreferred, Converter={StaticResource DelayConverter}, Mode=TwoWay}" />
                        </DataTemplate>
                    </GridViewColumn.CellTemplate>
                </GridViewColumn>

结果:

在此处输入图像描述

有没有人见过这种行为或知道可能发生了什么变化。我最近所做的唯一更改是升级到 VS 2013,但所有其他ListView带有Converters 的 s 仍然按预期工作。

风格:

 <Style TargetType="{x:Type ListView}">

    <Setter Property="BorderBrush" Value="White"/>
    <Setter Property="Foreground" Value="Black"/>
    <Setter Property="AlternationCount" Value="2"/>
    <Setter Property="Background" Value="WhiteSmoke"/>

    <EventSetter Event="Loaded" Handler="ListView_Loaded"/>

</Style>

<Style TargetType="{x:Type GridViewColumnHeader}">
    <Setter Property="HorizontalContentAlignment" Value="Left"/>
    <Setter Property="Margin" Value="1,0"/>
</Style>

<Style TargetType="{x:Type ListViewItem}" x:Key="ListViewStyle">


    <Style.Triggers>
        <Trigger Property="ItemsControl.AlternationIndex" Value="0">
            <Setter Property="Background" Value="WhiteSmoke"></Setter>
        </Trigger>
        <Trigger Property="ItemsControl.AlternationIndex" Value="1">
            <Setter Property="Background" Value="White"></Setter>
        </Trigger>

        <DataTrigger Binding="{Binding IsFirst}" Value="True">
            <Setter Property="Background" Value="LightGreen"></Setter>
        </DataTrigger>

        <DataTrigger Binding="{Binding IsLastUnpaid}" Value="True">
            <Setter Property="Background" Value="LightSalmon"></Setter>
        </DataTrigger>

        <Trigger Property="IsSelected" Value="True">
            <Setter Property="Background" Value="#FF41B1E1"></Setter>
        </Trigger>

    </Style.Triggers>

    <Setter Property="Height" Value="20" />
    <Setter Property="HorizontalAlignment" Value="Left"/>

</Style>

更新:

我最近从 a 更改ListView为 a DataGrid,然后我看到一个小感叹号,好像DataGrid.

在此处输入图像描述

有任何想法吗?

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