可见性绑定不适用于不同的PC

时间:2014-02-19 13:04:00

标签: c# wpf binding visibility datatemplate

我在DataGrid的DataTemplate中遇到可见性绑定问题。

我对可见性的绑定是

Visibility="{Binding ElementName=Hauptfenster, Path=Test.IsAdmin, Converter={StaticResource TestConvert}}"

我添加了一个TextBox,显示了IsAdmin的值:

<TextBlock Text="Visible or Not" Width="150" Height="30" Visibility="{Binding ElementName=Hauptfenster, Path=Test.IsAdmin, Converter={StaticResource TestConvert}}" HorizontalAlignment="Right" />

和一个可见或不可用的TextBlock

<TextBlock Text="Visible or Not" Width="150" Height="30" Visibility="{Binding ElementName=Hauptfenster, Path=Test.IsAdmin, Converter={StaticResource TestConvert}}" HorizontalAlignment="Right" />

在另一台机器上,两个TextBlock元素正确地更改它们的值(true / false或Visible / Collapsed)。只有数据网格中的复选框不会更改它:( 为什么呢?

整个XAML:

<Window x:Class="BindingTest.MainWindow"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    Title="MainWindow" Height="350" Width="525"
    x:Name="Hauptfenster">
<Window.Resources>
    <BooleanToVisibilityConverter x:Key="TestConvert" />
</Window.Resources>
<Grid>
    <Grid.RowDefinitions>
        <RowDefinition Height="20*"/>
        <RowDefinition Height="87*"/>
    </Grid.RowDefinitions>

    <ToggleButton Content="TestButton" Width="150" Height="30" Click="ToggleButton_Click" />

    <TextBlock Text="Visible or Not" Width="150" Height="30" Visibility="{Binding ElementName=Hauptfenster, Path=Test.IsAdmin, Converter={StaticResource TestConvert}}" HorizontalAlignment="Right" />

    <TextBlock Text="{Binding ElementName=Hauptfenster, Path=Test.IsAdmin}" Width="100" Height="20" HorizontalAlignment="Left"  />

    <DataGrid x:Name="dgTest" Grid.Row="1">
        <DataGrid.Columns>
            <DataGridTemplateColumn Header="Spalte 1">
                <DataGridTemplateColumn.CellTemplate>
                    <DataTemplate>
                        <StackPanel Orientation="Horizontal">
                            <CheckBox Content="Test" Visibility="{Binding ElementName=Hauptfenster, Path=Test.IsAdmin, Converter={StaticResource TestConvert}}" />
                            <TextBlock Text="{Binding Spalte1}" />
                        </StackPanel>
                    </DataTemplate>
                </DataGridTemplateColumn.CellTemplate>
            </DataGridTemplateColumn>
            <DataGridTemplateColumn Header="Spalte 2">
                <DataGridTemplateColumn.CellTemplate>
                    <DataTemplate>
                        <StackPanel Orientation="Horizontal">
                            <CheckBox Content="Test" />
                            <TextBlock Text="{Binding Spalte2}" />
                        </StackPanel>
                    </DataTemplate>
                </DataGridTemplateColumn.CellTemplate>
            </DataGridTemplateColumn>
            <DataGridTextColumn Header="Spalte 3" Binding="{Binding Spalte3}" />
        </DataGrid.Columns>
    </DataGrid>
</Grid>

转换器:

public class BooleanToVisibilityConverter : IValueConverter
{
    public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
    {
        return ((bool)value == true) ? Visibility.Visible : Visibility.Collapsed;
    }

    public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
    {
        throw new NotImplementedException();
    }
}

如果“IsAdmin”属性为false,则应折叠复选框(或其他)。它在我的机器上工作正常(.NET 4.5.1),但是如果我在安装了.NET 4.0的另一台机器上试用它,它就不起作用了。该项目的目标框架是.NET 4.0。

我做错了什么?这是一个.NET错误吗?有任何想法吗?谢谢!

1 个答案:

答案 0 :(得分:1)

谢谢,这是解决方案!

<CheckBox Content="Test" Visibility="{Binding Source={x:Reference Hauptfenster}, Path=Test.IsAdmin, Converter={StaticResource TestConvert}}" />

现在它就像一个魅力!