C# Page.xaml中使用UserControl的VisualStateManager在UWP应用程序中不工作
在我的UWP应用程序中,在代码隐藏中C# Page.xaml中使用UserControl的VisualStateManager在UWP应用程序中不工作,c#,uwp,uwp-xaml,C#,Uwp,Uwp Xaml,在我的UWP应用程序中,在代码隐藏中 VisualStateManager.GoToState(this,"Layout2",false); 返回假;当我在page.xaml中使用使用UserControl的VisualStateManager xaml块时 这就是我的意思。这是使用用户控件的page.xaml: <local:MainUserControl x:Name="mainControl"> <local:MainUserControl.QuestionC
VisualStateManager.GoToState(this,"Layout2",false);
返回假;当我在page.xaml中使用使用UserControl的VisualStateManager xaml块时
这就是我的意思。这是使用用户控件的page.xaml:
<local:MainUserControl x:Name="mainControl">
<local:MainUserControl.QuestionContent>
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="200"/>
<RowDefinition Height="200"/>
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="200"/>
<ColumnDefinition Width="200"/>
</Grid.ColumnDefinitions>
<Border x:Name="imageControl" Background="Red" Height="200" Width="200" Grid.Row="0" Grid.Column="0"/>
<Border x:Name="richTextBoxControl" Background="Yellow" Grid.Row="0" Grid.Column="1" HorizontalAlignment="Stretch" VerticalAlignment="Stretch"/>
<VisualStateManager.VisualStateGroups>
<VisualStateGroup>
<VisualState x:Name="Layout1"/>
<VisualState x:Name="Layout2">
<Storyboard>
<ObjectAnimationUsingKeyFrames Storyboard.TargetName="imageControl" Storyboard.TargetProperty="(Grid.Column)">
<DiscreteObjectKeyFrame KeyTime="0" Value="1"/>
</ObjectAnimationUsingKeyFrames>
<ObjectAnimationUsingKeyFrames Storyboard.TargetName="richTextBoxControl" Storyboard.TargetProperty="(Grid.Column)">
<DiscreteObjectKeyFrame KeyTime="0" Value="0"/>
</ObjectAnimationUsingKeyFrames>
</Storyboard>
</VisualState>
</VisualStateGroup>
</VisualStateManager.VisualStateGroups>
</Grid>
</local:MainUserControl.QuestionContent>
</local:MainUserControl>
我也检查了两次我的名称空间,但无法解决这个问题
请注意,当我删除
<local:MainUserControl x:Name="mainControl">
<local:MainUserControl.QuestionContent>
}您需要将
VisualStateManager.VisualStateGroups
作为根面板网格的立即子标记,如下所示:
<Grid>
<VisualStateManager.VisualStateGroups>
<VisualStateGroup>
<VisualState x:Name="Layout1"/>
<VisualState x:Name="Layout2">
<Storyboard>
<ObjectAnimationUsingKeyFrames Storyboard.TargetName="imageControl" Storyboard.TargetProperty="(Grid.Column)">
<DiscreteObjectKeyFrame KeyTime="0" Value="1"/>
</ObjectAnimationUsingKeyFrames>
<ObjectAnimationUsingKeyFrames Storyboard.TargetName="richTextBoxControl" Storyboard.TargetProperty="(Grid.Column)">
<DiscreteObjectKeyFrame KeyTime="0" Value="0"/>
</ObjectAnimationUsingKeyFrames>
</Storyboard>
</VisualState>
</VisualStateGroup>
</VisualStateManager.VisualStateGroups>
<local:MainUserControl x:Name="mainControl">
<local:MainUserControl.QuestionContent>
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="200"/>
<RowDefinition Height="200"/>
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="200"/>
<ColumnDefinition Width="200"/>
</Grid.ColumnDefinitions>
<Border x:Name="imageControl" Background="Red" Height="200" Width="200" Grid.Row="0" Grid.Column="0"/>
<Border x:Name="richTextBoxControl" Background="Yellow" Grid.Row="0" Grid.Column="1" HorizontalAlignment="Stretch" VerticalAlignment="Stretch"/>
</Grid>
</local:MainUserControl.QuestionContent>
</local:MainUserControl>
</Grid>
然后,在这个XAML页面的代码隐藏中,您可以调用VisualStateManager.GoToState(这个“Layout2”,false)
更改视觉状态。我需要一个诊断程序来诊断此问题。或者我至少需要实现MainUserControl
的方法。因为我创建了一个“UserControl”并设置了与“local:MainUserControl.QuestionContent”相同的内容,所以我成功地调用了VisualStateManager.GoToState(this.mainControl,“Layout2”,false)
方法。@XavierXie MSFT感谢您的回复。请检查问题的更新部分。我刚刚添加了UserControl内容
<UserControl
x:Class="MyProject.Pages.MainUserControl"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:local="using:MyProject.Pages"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
mc:Ignorable="d">
<Grid Background="#ededed">
<Grid.RowDefinitions>
<RowDefinition Height="227"/>
<RowDefinition Height="625"/>
<RowDefinition Height="227"/>
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="692"/>
<ColumnDefinition Width="1000"/>
<ColumnDefinition Width="228"/>
</Grid.ColumnDefinitions>
<StackPanel Grid.Row="1" Grid.Column="1" Background="White" >
<StackPanel x:Name="panelQuestion">
<ContentPresenter Content="{x:Bind QuestionContent}"/>
</StackPanel>
</StackPanel>
</Grid>
namespace MyProject.Pages
{
public sealed partial class MainUserControl : UserControl
{
public StackPanel cPanelQuestion;
public MainUserControl()
{
this.InitializeComponent();
cPanelQuestion = this.panelQuestion;
}
public object QuestionContent
{
get { return (object)GetValue(QuestionContentProperty); }
set { SetValue(QuestionContentProperty, value); }
}
// Using a DependencyProperty as the backing store for Body. This enables animation, styling, binding, etc...
public static readonly DependencyProperty QuestionContentProperty =
DependencyProperty.Register("QuestionContent", typeof(object), typeof(MainUserControl), null);
}
<Grid>
<VisualStateManager.VisualStateGroups>
<VisualStateGroup>
<VisualState x:Name="Layout1"/>
<VisualState x:Name="Layout2">
<Storyboard>
<ObjectAnimationUsingKeyFrames Storyboard.TargetName="imageControl" Storyboard.TargetProperty="(Grid.Column)">
<DiscreteObjectKeyFrame KeyTime="0" Value="1"/>
</ObjectAnimationUsingKeyFrames>
<ObjectAnimationUsingKeyFrames Storyboard.TargetName="richTextBoxControl" Storyboard.TargetProperty="(Grid.Column)">
<DiscreteObjectKeyFrame KeyTime="0" Value="0"/>
</ObjectAnimationUsingKeyFrames>
</Storyboard>
</VisualState>
</VisualStateGroup>
</VisualStateManager.VisualStateGroups>
<local:MainUserControl x:Name="mainControl">
<local:MainUserControl.QuestionContent>
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="200"/>
<RowDefinition Height="200"/>
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="200"/>
<ColumnDefinition Width="200"/>
</Grid.ColumnDefinitions>
<Border x:Name="imageControl" Background="Red" Height="200" Width="200" Grid.Row="0" Grid.Column="0"/>
<Border x:Name="richTextBoxControl" Background="Yellow" Grid.Row="0" Grid.Column="1" HorizontalAlignment="Stretch" VerticalAlignment="Stretch"/>
</Grid>
</local:MainUserControl.QuestionContent>
</local:MainUserControl>
</Grid>