弹出窗口永远不会失去焦点
我遇到了弹出窗口的问题。当用户点击配置文件时，我想显示一个弹出窗口。
这已经可以工作，但弹出窗口在失去焦点时不会关闭。弹出窗口永远不会失去焦点
我试图设置stayopen属性为false，但弹出窗口显示大约半秒钟，然后立即关闭。
我还试图抓住在代码中的焦点丢失事件，但该事件从未触发...
<UserControl xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:converters="clr-namespace:UserControlSolution.Converter"
xmlns:i="http://schemas.microsoft.com/expression/2010/interactivity" xmlns:ei="http://schemas.microsoft.com/expression/2010/interactions"
mc:Ignorable="d"
x:Class="UserControlSolution.ProfileControl"
x:Name="UserControl"
d:DesignWidth="640" d:DesignHeight="480"
Height="55">
<UserControl.Resources>
<converters:ConnectedStatusToColorConverter x:Key="ConnectedStatusToColorConverter"/>
<Style x:Key="ProfileOptionsStyle" TargetType="TextBlock">
<Setter Property="Padding" Value="7" />
<Setter Property="FontFamily" Value="Segoe UI" />
<Setter Property="Foreground" Value="Silver" />
<Setter Property="HorizontalAlignment" Value="Stretch" />
<Setter Property="TextAlignment" Value="Right" />
<Setter Property="Margin" Value="10,3,5,0" />
<Setter Property="FontSize" Value="14.5" />
<Setter Property="TextWrapping" Value="WrapWithOverflow" />
<Setter Property="TextTrimming" Value="CharacterEllipsis" />
<Setter Property="Background" Value="Transparent" />
<Style.Triggers>
<Trigger Property="IsMouseOver" Value="True">
<Setter Property="Background" Value="{StaticResource SelectGrey}" />
</Trigger>
</Style.Triggers>
</Style>
<Canvas x:Key="Lynx_logo_NoText" x:Name="Lynx_logo_NoText" HorizontalAlignment="Left" Height="189.333" UseLayoutRounding="False" VerticalAlignment="Top" Width="504.864">
<Canvas x:Name="Laag_2" Height="156.803" Canvas.Left="26.033" Canvas.Top="16.47" Width="450.509">
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</Canvas>
<Canvas x:Name="Laag_3"/>
</Canvas>
</UserControl.Resources>
<Grid x:Name="HeaderContainer" Grid.Row="0" Background="{StaticResource VeryDarkGrey}">
<VisualStateManager.VisualStateGroups>
<VisualStateGroup x:Name="ProfilePanelStates">
<VisualState x:Name="ProfilePanelMouseEnter">
<Storyboard>
<ColorAnimationUsingKeyFrames Storyboard.TargetProperty="(Panel.Background).(SolidColorBrush.Color)" Storyboard.TargetName="ProfilePanel">
<EasingColorKeyFrame KeyTime="0" Value="#FF404040"/>
</ColorAnimationUsingKeyFrames>
</Storyboard>
</VisualState>
<VisualState x:Name="ProfilePanelMouseOut"/>
<VisualState x:Name="ProfilePanelMouseDown">
<Storyboard>
<ColorAnimationUsingKeyFrames Storyboard.TargetProperty="(Panel.Background).(SolidColorBrush.Color)" Storyboard.TargetName="ProfilePanel">
<EasingColorKeyFrame KeyTime="0" Value="#FF404040"/>
</ColorAnimationUsingKeyFrames>
<DoubleAnimationUsingKeyFrames Storyboard.TargetProperty="(TextElement.FontSize)" Storyboard.TargetName="UserNameTextBlock">
<EasingDoubleKeyFrame KeyTime="0" Value="17.666"/>
</DoubleAnimationUsingKeyFrames>
<DoubleAnimationUsingKeyFrames Storyboard.TargetProperty="(FrameworkElement.Width)" Storyboard.TargetName="ProfilePicture">
<EasingDoubleKeyFrame KeyTime="0" Value="43"/>
</DoubleAnimationUsingKeyFrames>
<DoubleAnimationUsingKeyFrames Storyboard.TargetProperty="(FrameworkElement.Height)" Storyboard.TargetName="ProfilePicture">
<EasingDoubleKeyFrame KeyTime="0" Value="43"/>
</DoubleAnimationUsingKeyFrames>
</Storyboard>
</VisualState>
<VisualState x:Name="ProfilePanelMouseUp">
<Storyboard>
<ColorAnimationUsingKeyFrames Storyboard.TargetProperty="(Panel.Background).(SolidColorBrush.Color)" Storyboard.TargetName="ProfilePanel">
<EasingColorKeyFrame KeyTime="0" Value="#FF404040"/>
</ColorAnimationUsingKeyFrames>
<DoubleAnimationUsingKeyFrames Storyboard.TargetProperty="(TextElement.FontSize)" Storyboard.TargetName="UserNameTextBlock">
<EasingDoubleKeyFrame KeyTime="0" Value="18.667"/>
</DoubleAnimationUsingKeyFrames>
<DoubleAnimationUsingKeyFrames Storyboard.TargetProperty="(FrameworkElement.Width)" Storyboard.TargetName="ProfilePicture">
<EasingDoubleKeyFrame KeyTime="0" Value="45"/>
</DoubleAnimationUsingKeyFrames>
<DoubleAnimationUsingKeyFrames Storyboard.TargetProperty="(FrameworkElement.Height)" Storyboard.TargetName="ProfilePicture">
<EasingDoubleKeyFrame KeyTime="0" Value="45"/>
</DoubleAnimationUsingKeyFrames>
</Storyboard>
</VisualState>
</VisualStateGroup>
</VisualStateManager.VisualStateGroups>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="*" />
<ColumnDefinition Width="*" />
</Grid.ColumnDefinitions>
<Viewbox x:Name="LynxLogoContainer" StretchDirection="DownOnly" Stretch="Uniform" Height="35" Grid.Column="0" HorizontalAlignment="Left" Margin="15,0,0,0" >
<ContentControl x:Name="MessageAction" Content="{StaticResource Lynx_logo_NoText}" Margin="0,5" />
</Viewbox>
<Grid x:Name="ProfilePanel" Grid.Column="1" VerticalAlignment="Center" HorizontalAlignment="Stretch" Background="Transparent" MouseLeftButtonDown="ProfilePanel_MouseLeftButtonDown">
<i:Interaction.Triggers>
<i:EventTrigger EventName="MouseLeftButtonDown">
<ei:GoToStateAction StateName="ProfilePanelMouseDown"/>
</i:EventTrigger>
<i:EventTrigger EventName="MouseLeftButtonUp">
<ei:GoToStateAction StateName="ProfilePanelMouseUp"/>
</i:EventTrigger>
<i:EventTrigger EventName="MouseEnter">
<ei:GoToStateAction StateName="ProfilePanelMouseEnter"/>
</i:EventTrigger>
<i:EventTrigger EventName="MouseLeave">
<ei:GoToStateAction StateName="ProfilePanelMouseOut"/>
</i:EventTrigger>
</i:Interaction.Triggers>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="*" />
<ColumnDefinition Width="50" />
</Grid.ColumnDefinitions>
<TextBlock x:Name="UserNameTextBlock" Grid.Column="0" TextWrapping="WrapWithOverflow" Foreground="Silver"
TextAlignment="Right" FontSize="18.667" HorizontalAlignment="Right"
TextTrimming="CharacterEllipsis" FontFamily="Segoe UI Light" Text="Laurens" />
<WrapPanel x:Name="ProfilePictureContainer" Grid.Column="1" Width="45" Height="45" HorizontalAlignment="Right">
<Image x:Name="ProfilePicture" Source="/Image/JV.jpg" Width="45" Height="45" />
</WrapPanel>
</Grid>
<Popup x:Name="ProfilePopup" Placement="Bottom" PlacementTarget="{Binding ElementName=ProfilePictureContainer}" Height="Auto" Width="Auto"
MinWidth="{Binding ActualWidth, ElementName=ProfilePanel}" MaxWidth="{Binding ActualWidth, ElementName=HeaderContainer}"
VerticalOffset="2" PopupAnimation="Slide" AllowsTransparency="True">
<Border Background="{StaticResource VeryDarkGrey}" BorderThickness="0,2,0,0" BorderBrush="#3C3C3C">
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="*" />
<RowDefinition Height="Auto" />
</Grid.RowDefinitions>
<StackPanel Grid.Row="0" Orientation="Vertical" VerticalAlignment="Top" Margin="0,0,0,5">
<TextBlock Style="{StaticResource ProfileOptionsStyle}" Text="Status: Online" />
<TextBlock Style="{StaticResource ProfileOptionsStyle}" Text="Verander profielfoto" />
</StackPanel>
<StackPanel Grid.Row="1" Margin="0,0,0,3">
<Rectangle HorizontalAlignment="Stretch" Fill="#FF4E4E4E" Height="1" Margin="10,0"/>
<TextBlock Style="{StaticResource ProfileOptionsStyle}" Text="Afsluiten" Margin="5,2,5,0"/>
</StackPanel>
</Grid>
</Border>
</Popup>
</Grid>
这是我打开弹出代码
using System; using System.Collections.Generic;
using System.Text;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;
namespace UserControlSolution
{
/// <summary>
/// Interaction logic for ProfileControl.xaml
/// </summary>
public partial class ProfileControl : UserControl
{
public ProfileControl()
{
this.InitializeComponent();
this.ProfilePopup.LostFocus += new RoutedEventHandler(ProfilePopup_LostFocus);
}
void ProfilePopup_LostFocus(object sender, RoutedEventArgs e)
{
ProfilePopup.IsOpen = false;
}
private void ProfilePanel_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
{
ProfilePopup.IsOpen = true;
}
}
}
回答：
我会通过将StaysOpen属性设置为false和Binding将Popup.IsOpen属性设置为bool财产并设置属性为false当我需要Popup关闭。试图做到这一点的LostFocus事件的问题是，Popup会失去焦点，即使用户只需点击该Popup内部控制，是控制将采取重点......我猜这就是为什么你的Popup关闭得这么快。
例如，我有一个自定义AutoCompleteTextBox和封闭在各个事件处理程序的控制Popup后用户已选择的建议之一：
private void ListBox_PreviewMouseDoubleClick(object sender, MouseButtonEventArgs e) {
Text = SelectedSuggestion;
if (SuggestionSelected != null) SuggestionSelected(this, new EventArgs());
Focus();
CaretIndex = Text.Length;
IsPopupOpen = false; // <<< Here is the line that closes the Popup
}
以上是 弹出窗口永远不会失去焦点 的全部内容， 来源链接： utcz.com/qa/263358.html
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