Wpf 运行时错误:找不到InverseBoleAnConverter
我在尝试遵循以下建议时遇到问题: 当我与ResourceDictionary一起使用时,它会给出运行时错误。找不到反向变压器 XMAL如下所示:Wpf 运行时错误:找不到InverseBoleAnConverter,wpf,styles,Wpf,Styles,我在尝试遵循以下建议时遇到问题: 当我与ResourceDictionary一起使用时,它会给出运行时错误。找不到反向变压器 XMAL如下所示: <UserControl x:Class="SMTF.MasterDataView" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
<UserControl x:Class="SMTF.MasterDataView"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:local="clr-namespace:SMTF" mc:Ignorable="d" xmlns:d="http://schemas.microsoft.com/expression/blend/2008" xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" d:DesignHeight="466" d:DesignWidth="483">
<UserControl.Resources>
<ResourceDictionary>
<ResourceDictionary.MergedDictionaries>
<ResourceDictionary Source="../AppResource.xaml" />
<ResourceDictionary Source="../DefaultStyle.xaml" />
</ResourceDictionary.MergedDictionaries>
</ResourceDictionary>
</UserControl.Resources>
<Grid>
<StackPanel HorizontalAlignment="Left" Margin="200,12,0,0" Name="stkMain" VerticalAlignment="Top" >
<Grid Margin="4">
<ContentControl Visibility="{Binding IsChecked, ElementName=VisibilityToggle, Converter={StaticResource InverseBooleanConverter}}" >
<Border Grid.Column="2" Style="{StaticResource MainBorderStyle}">
<HeaderedContentControl Content="{Binding Path=WorkspaceView}" ContentTemplate="{StaticResource WorkspacesTemplate}" Header="View" Style="{StaticResource MainHCCStyle}"/>
</Border>
</ContentControl>
</Grid>
<Grid DockPanel.Dock="Bottom" Margin="0,2,4,2">
<TextBlock HorizontalAlignment="Right">
<ToggleButton x:Name="VisibilityToggle" Focusable="False" Style="{StaticResource SMToggle}" Command ="{Binding ShowNew}" >
</ToggleButton>
<!--<ToggleButton x:Name="VisibilityToggle" Background="Transparent" Command ="{Binding ShowNew}" >
<Image Source="/Image/Add.png" Width="24" />
</ToggleButton>-->
</TextBlock>
</Grid>
<Grid Margin="4">
<ContentControl Visibility="{Binding IsChecked, ElementName=VisibilityToggle, Converter={StaticResource BoolToVisibility}}" >
<Border Grid.Column="2" Style="{StaticResource MainBorderStyle}">
<HeaderedContentControl Content="{Binding Path=WorkspaceEdit}" ContentTemplate="{StaticResource WorkspacesTemplate}" Header="Configure" Style="{StaticResource MainHCCStyle}"/>
</Border>
</ContentControl>
</Grid>
</StackPanel>
</Grid>
</UserControl>
在AppResourceXML中
<ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:vm="clr-namespace:SMTF">
<vm:InverseBooleanConverter x:Key="InverseBoolToVisibility" />
.....
.....
</ResourceDictionary>
.....
.....
提前谢谢
NS您使用的密钥不正确。您的资源密钥是
inversebooltovibility
,而您使用了InverseBooleanConverter作为密钥
更改资源密钥以将正确的资源引用为
<ContentControl Visibility="{Binding IsChecked, ElementName=VisibilityToggle, Converter={StaticResource InverseBoolToVisibility}}" >
样式相关绑定的转换器的另一种选择是使用style.Triggers,下面显示了当复选框IsChecked=false时的画布,否则将需要InverseBoleAnConverter
<Canvas x:Name="Overlay">
<Canvas.Style>
<Style TargetType="Canvas">
<Style.Triggers>
<DataTrigger Binding="{Binding IsChecked, ElementName=MyCheckbox}" Value="True">
<Setter Property="Visibility" Value="Collapsed" />
</DataTrigger>
<DataTrigger Binding="{Binding IsChecked, ElementName=MyCheckbox}" Value="False">
<Setter Property="Visibility" Value="Visible" />
</DataTrigger>
</Style.Triggers>
</Style>
</Canvas.Style>
<Rectangle Canvas.ZIndex="3" Fill="#99333333" Height="25" Stroke="Transparent" Width="293" Canvas.Left="10" Canvas.Top="-25"/>
</Canvas>
请分享您尝试过的代码/xaml。如何定义转换器以及如何引用it@nit我已经添加了所需的信息,谢谢。转换器类有什么问题吗?或者我必须使用的任何附加代码?我得到的是targetType不是布尔错误!如果答案的xaml在usercontrol中,而convert在mainWindowViewModel中呢?一个怎么能看到另一个?我尝试使用祖先类型,但它不起作用。我正在寻找一个只有xaml的解决方案,就是这样!
public class InverseBooleanConverter: IValueConverter
{
#region IValueConverter Members
public object Convert(object value, Type targetType, object parameter,
System.Globalization.CultureInfo culture)
{
if (targetType != typeof(Visibility))
throw new InvalidOperationException("The target must be a boolean");
if(!(bool)value)
{
return Visibility.Visible;
}
return Visibility.Collapsed;
}
public object ConvertBack(object value, Type targetType, object parameter,
System.Globalization.CultureInfo culture)
{
throw new NotSupportedException();
}
#endregion
}
<Canvas x:Name="Overlay">
<Canvas.Style>
<Style TargetType="Canvas">
<Style.Triggers>
<DataTrigger Binding="{Binding IsChecked, ElementName=MyCheckbox}" Value="True">
<Setter Property="Visibility" Value="Collapsed" />
</DataTrigger>
<DataTrigger Binding="{Binding IsChecked, ElementName=MyCheckbox}" Value="False">
<Setter Property="Visibility" Value="Visible" />
</DataTrigger>
</Style.Triggers>
</Style>
</Canvas.Style>
<Rectangle Canvas.ZIndex="3" Fill="#99333333" Height="25" Stroke="Transparent" Width="293" Canvas.Left="10" Canvas.Top="-25"/>
</Canvas>