我确实遇到了绑定usercontrol可见性的问题。
对Visibility类型的依赖属性的绑定工作正常,DP保存正确的值(在本例中为Collapsed)。 UserControl中我的网格内容设置为折叠,但孔控制不会崩溃。它仍然保留由with和heigth定义的空间,如xaml中所引用。
编辑:我发现,问题是我在xaml中设置宽度和高度,我引用了我的usercontrol。如果我不这样做,控件就会崩溃正确(因此绑定工作正常)。但我需要设置宽度和高度,以防用户控件可见。
知道如何解决这个问题吗?
<my:MenuButtonBase x:Class="bxSuite.Controls.MenuButtonLarge"
xmlns:my="clr-namespace:bxSuite.Controls"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
Background="Black"
>
<Grid Visibility="{Binding RelativeSource={RelativeSource Mode=FindAncestor, AncestorType={x:Type UserControl}}, Path=ButtonVisibility}" >
<StackPanel>
<Image Source="{Binding ButtonImageSource}" Margin="5,10,5,5" Width="48" Height="48" VerticalAlignment="Top" HorizontalAlignment="Center" />
<TextBlock Text="{Binding FunctionHeader}" Foreground="White" TextWrapping="Wrap" TextAlignment="Center" Padding="5,5,5,5" FontSize="12" />
</StackPanel>
</Grid>
</my:MenuButtonBase>
在XAML中,我像这样引用我的usercontrol(转换器正确生成可见性状态):
<my:MenuButtonLarge Name="btnInEuqipment" ButtonVisibility="{Binding Path=User, Converter={StaticResource ConverterUserRightVisibility}, ConverterParameter=5}" VerticalAlignment="Top" FunctionHeader="{lex:Loc Key=MenuButton_InEquipment}" Width="130" ButtonImageSource="/bxSuite.RolloutManager;component/Images/inequipment_48x48.png" BackgroundEnabled="#FF0694FD" BackgroundHover="#FF0072C6" MenuButtonClick="btnInEuqipment_MenuButtonClick" Height="95" Margin="5,10,0,0" />
答案 0 :(得分:0)
尝试设置用户控件的可见性而不是网格,应该可行。
您的代码应该是这样的。
<my:MenuButtonBase x:Class="bxSuite.Controls.MenuButtonLarge"
xmlns:my="clr-namespace:bxSuite.Controls"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
Visibility="{Binding RelativeSource={RelativeSource Mode=FindAncestor, AncestorType={x:Type UserControl}}, Path=ButtonVisibility}"
Background="Black">
<Grid>
<StackPanel>
<Image Source="{Binding ButtonImageSource}"
Margin="5,10,5,5"
Width="48"
Height="48"
VerticalAlignment="Top"
HorizontalAlignment="Center" />
<TextBlock Text="{Binding FunctionHeader}"
Foreground="White"
TextWrapping="Wrap"
TextAlignment="Center"
Padding="5,5,5,5"
FontSize="12" />
</StackPanel>
</Grid>
别忘了更新绑定的RelativeSource。