以下是概述：
我正在使用自定义控件（CusCtrl）来显示任务栏图标，它还具有弹出属性。因此，当您单击图标时，CusCtrl会显示弹出窗口。
我正在使用UserControl设置弹出窗口的子项（假设 UC1 ）。
我使用ViewModel设置CusCtrl的DataContext，因此即使UC1与相应的ViewModel绑定（假设 VM1 ）
现在UC1有一些元素 - 一个标签，点击标签我需要做两件事：
在视图模型VM1上调用命令 -
从命令我需要将一些视图模型的属性作为参数传递并打开一些窗口UI。
关闭PopUp -
为此，我想到在UserControl＆amp;的代码后面监听MouseUp事件。然后触发路由事件（ FirePopUpClose - 此事件在UserControl UC1中定义），该事件将由app＆amp;然后从内部 处理程序，将调用Custom Conntrol的ClosePopUp方法。
我知道如何使用Interactivity dll在标签上调用MouseUp事件的命令，但是如何引发FirePopUpClose路由事件呢？
或者如何在标签上应用MouseUp事件处理程序以及将命令绑定到该标签？
我是否认为这是正确的方法，或者有更好的方法来做一些UI动作以及通过坚持MVVM来关闭PopUp？
答案 0 :(得分：0)
下一个解决方案呢？尝试使用Popup.IsOpen属性（here is the information about，这是使用#867 – Controlling Whether a Popup Is Open Using Data Binding）的示例。直接将它绑定到UC1 DataContext或通过CusCtrl用户控件的DependencyProperty绑定（您必须在控件中创建封装Popup的属性）。总而言之，通过这种方式，您可以管理弹出窗口，无需事件即可打开或关闭。
<强>更新 尝试下一个： 1.主要Xaml：
<Window x:Class="PopupIsOpenDataBindingHelpAttempt.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:popupIsOpenDataBindingHelpAttempt="clr-namespace:PopupIsOpenDataBindingHelpAttempt"
xmlns:system="clr-namespace:System;assembly=mscorlib"
Title="MainWindow" Height="350" Width="525">
<Window.DataContext>
<popupIsOpenDataBindingHelpAttempt:DemoMainViewModel/>
</Window.DataContext>
<Window.Resources>
<DataTemplate x:Key="PopupInnerControlDataTemplateKey" DataType="{x:Type popupIsOpenDataBindingHelpAttempt:TaskBarDemoViewModel}">
<Grid Width="150" Height="85">
<Grid.RowDefinitions>
<RowDefinition></RowDefinition>
<RowDefinition></RowDefinition>
</Grid.RowDefinitions>
<TextBlock Grid.Row="0" Text="{Binding TextString}"
Margin="5" Foreground="Red"
Width="150" TextWrapping="WrapWithOverflow"
VerticalAlignment="Stretch" HorizontalAlignment="Stretch"/>
<Button Grid.Row="1" Content="Press to close" Command="{Binding PopupInnerButtonCommand}"
VerticalAlignment="Stretch" HorizontalAlignment="Stretch"/>
</Grid>
</DataTemplate>
<Image x:Key="ImageControl" Source="Pic/2015_10_16_Bing_en-US.jpg" IsHitTestVisible="False"/>
</Window.Resources>
<Grid Width="75" Height="75" HorizontalAlignment="Center" VerticalAlignment="Center">
<popupIsOpenDataBindingHelpAttempt:TaskBarIconProjectDemo
ButtonContentProperty="{StaticResource ImageControl}"
ButtonCommandProperty="{Binding ShowPopupCommand}"
PopupIsOpenProperty="{Binding IsPopupOpen, UpdateSourceTrigger=PropertyChanged}"
PopupInnerContentControlDataContext="{Binding TaskBarDemoViewModel, UpdateSourceTrigger=PropertyChanged}"
PopupInnerContentControlContentTemplate="{StaticResource PopupInnerControlDataTemplateKey}"/>
</Grid>
2.弹出封装XAMl：
<UserControl x:Class="PopupIsOpenDataBindingHelpAttempt.TaskBarIconProjectDemo"
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"
mc:Ignorable="d"
d:DesignHeight="300" d:DesignWidth="300" x:Name="This">
<Grid>
<Button Style="{StaticResource SpecialButtonStyle}" Command="{Binding ElementName=This, Path=ButtonCommandProperty}"
Content="{Binding ElementName=This, Path=ButtonContentProperty}"></Button>
<Popup IsOpen="{Binding ElementName=This, Path=PopupIsOpenProperty}">
<ContentControl Content="{Binding ElementName=This, Path=PopupInnerContentControlDataContext}"
ContentTemplate="{Binding ElementName=This, Path=PopupInnerContentControlContentTemplate}"/>
</Popup>
</Grid>
3.弹出封装控制代码（依赖属性）：
public partial class TaskBarIconProjectDemo : UserControl
{
public static readonly DependencyProperty ButtonCommandPropertyProperty = DependencyProperty.Register("ButtonCommandProperty", typeof (ICommand), typeof (TaskBarIconProjectDemo), new PropertyMetadata(default(ICommand)));
public static readonly DependencyProperty PopupIsOpenPropertyProperty = DependencyProperty.Register("PopupIsOpenProperty", typeof (bool), typeof (TaskBarIconProjectDemo), new PropertyMetadata(default(bool)));
public static readonly DependencyProperty PopupInnerContentControlDataContextProperty = DependencyProperty.Register("PopupInnerContentControlDataContext", typeof (object), typeof (TaskBarIconProjectDemo), new PropertyMetadata(default(object)));
public static readonly DependencyProperty PopupInnerContentControlContentTemplateProperty = DependencyProperty.Register("PopupInnerContentControlContentTemplate", typeof (DataTemplate), typeof (TaskBarIconProjectDemo), new PropertyMetadata(default(DataTemplate)));
public static readonly DependencyProperty ButtonContentPropertyProperty = DependencyProperty.Register("ButtonContentProperty", typeof (object), typeof (TaskBarIconProjectDemo), new PropertyMetadata(default(object)));
public TaskBarIconProjectDemo()
{
InitializeComponent();
}
public ICommand ButtonCommandProperty
{
get { return (ICommand) GetValue(ButtonCommandPropertyProperty); }
set { SetValue(ButtonCommandPropertyProperty, value); }
}
public bool PopupIsOpenProperty
{
get { return (bool) GetValue(PopupIsOpenPropertyProperty); }
set { SetValue(PopupIsOpenPropertyProperty, value); }
}
public object PopupInnerContentControlDataContext
{
get { return (object) GetValue(PopupInnerContentControlDataContextProperty); }
set { SetValue(PopupInnerContentControlDataContextProperty, value); }
}
public DataTemplate PopupInnerContentControlContentTemplate
{
get { return (DataTemplate) GetValue(PopupInnerContentControlContentTemplateProperty); }
set { SetValue(PopupInnerContentControlContentTemplateProperty, value); }
}
public object ButtonContentProperty
{
get { return (object) GetValue(ButtonContentPropertyProperty); }
set { SetValue(ButtonContentPropertyProperty, value); }
}
}
4。查看模特：
public class DemoMainViewModel:BaseObservableObject
{
private bool _isOpen;
private TaskBarDemoViewModel _taskBarDemoViewModel;
private ICommand _showPopupCommnad;
public DemoMainViewModel()
{
TaskBarDemoViewModel = new TaskBarDemoViewModel(ClosePopup, "Here you can put your content. Go for it...");
}
private void ClosePopup()
{
IsPopupOpen = false;
}
public bool IsPopupOpen
{
get { return _isOpen; }
set
{
_isOpen = value;
OnPropertyChanged();
}
}
public TaskBarDemoViewModel TaskBarDemoViewModel
{
get { return _taskBarDemoViewModel; }
set
{
_taskBarDemoViewModel = value;
OnPropertyChanged();
}
}
public ICommand ShowPopupCommand
{
get { return _showPopupCommnad ?? (_showPopupCommnad = new RelayCommand(ShowPopup)); }
}
private void ShowPopup()
{
IsPopupOpen = true;
}
}
public class TaskBarDemoViewModel:BaseObservableObject
{
private readonly Action _closePopupCommand;
private ICommand _command;
private string _textString;
public TaskBarDemoViewModel(Action closePopupCommand, string content)
{
_closePopupCommand = closePopupCommand;
TextString = content;
}
public ICommand PopupInnerButtonCommand
{
get { return _command ?? (_command = new RelayCommand(TargetMethod)); }
}
private void TargetMethod()
{
//add your logic here
if(_closePopupCommand == null) return;
_closePopupCommand();
}
public string TextString
{
get { return _textString; }
set
{
_textString = value;
OnPropertyChanged();
}
}
}
5。按钮样式（根据需要更改）：
<Color x:Key="ButtonLowerPartKey">#FFD5E0EE</Color>
<Color x:Key="ButtonUpperPartKey">#FFEAF1F8</Color>
<Color x:Key="PressedColorButtonLowerPartKey">#FFF4C661</Color>
<Color x:Key="PressedButtonUpperPartKey">#FFF4CC87</Color>
<Color x:Key="HooveredButtonLowerPartKey">#FFFFD06D</Color>
<Color x:Key="HooveredButtonUpperPartKey">#FFFFF0DF</Color>
<Style x:Key="SpecialButtonStyle" TargetType="Button" BasedOn="{StaticResource {x:Type Button}}">
<Setter Property="Padding" Value="5">
</Setter>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate>
<Grid x:Name="Grid">
<Ellipse x:Name="ButtonControlBorder" Stroke="{TemplateBinding BorderBrush}"
StrokeThickness="{TemplateBinding BorderThickness}"
Width="{TemplateBinding Width}" Height="{TemplateBinding Height}">
<Ellipse.Fill>
<LinearGradientBrush x:Name="BrushKey" MappingMode="RelativeToBoundingBox" SpreadMethod="Repeat" StartPoint="0.5,0" EndPoint="0.5,1">
<LinearGradientBrush.GradientStops>
<GradientStop Offset="0.5" Color="{StaticResource ButtonUpperPartKey}" />
<GradientStop Offset="0.5" Color="{StaticResource ButtonUpperPartKey}" />
<GradientStop Offset="0.5" Color="{StaticResource ButtonLowerPartKey}" />
</LinearGradientBrush.GradientStops>
</LinearGradientBrush>
</Ellipse.Fill>
</Ellipse>
<Ellipse x:Name="Pressed" Width="{TemplateBinding Width}" Height="{TemplateBinding Height}" Opacity="0">
<Ellipse.Fill>
<LinearGradientBrush x:Name="PressedBrushKey" MappingMode="RelativeToBoundingBox" SpreadMethod="Repeat" StartPoint="0.5,0" EndPoint="0.5,1">
<LinearGradientBrush.GradientStops>
<GradientStop Offset="0.5" Color="{StaticResource PressedButtonUpperPartKey}" />
<GradientStop Offset="0.5" Color="{StaticResource PressedButtonUpperPartKey}" />
<GradientStop Offset="0.5" Color="{StaticResource PressedColorButtonLowerPartKey}" />
</LinearGradientBrush.GradientStops>
</LinearGradientBrush>
</Ellipse.Fill>
</Ellipse>
<Ellipse x:Name="InnerPressed"
Width="{Binding ElementName=Pressed, Path=Width}" Height="{Binding ElementName=Pressed, Path=Height}"
Stroke="DarkOrange" Opacity="0" StrokeThickness="1" SnapsToDevicePixels="True" Fill="Transparent"/>
<ContentPresenter Content="{TemplateBinding Button.Content}" HorizontalAlignment="Center" VerticalAlignment="Center">
<ContentPresenter.OpacityMask>
<VisualBrush Visual="{Binding ElementName=ButtonControlBorder}" />
</ContentPresenter.OpacityMask>
</ContentPresenter>
<Grid.Triggers>
<EventTrigger RoutedEvent="Mouse.MouseEnter">
<BeginStoryboard x:Name="MouseEnterStoryboard">
<Storyboard>
<ColorAnimation Storyboard.TargetName="BrushKey" Storyboard.TargetProperty="GradientStops[0].Color" From="{StaticResource ButtonUpperPartKey}" To="{StaticResource HooveredButtonUpperPartKey}" Duration="0:0:0.3" AutoReverse="False" />
<ColorAnimation Storyboard.TargetName="BrushKey" Storyboard.TargetProperty="GradientStops[2].Color" From="{StaticResource ButtonLowerPartKey}" To="{StaticResource HooveredButtonLowerPartKey}" Duration="0:0:0.3" />
</Storyboard>
</BeginStoryboard>
</EventTrigger>
<EventTrigger RoutedEvent="Mouse.MouseLeave">
<BeginStoryboard>
<Storyboard>
<ColorAnimation Storyboard.TargetName="BrushKey" Storyboard.TargetProperty="GradientStops[0].Color" From="{StaticResource HooveredButtonUpperPartKey}" To="{StaticResource ButtonUpperPartKey}" Duration="0:0:1" AutoReverse="False" />
<ColorAnimation Storyboard.TargetName="BrushKey" Storyboard.TargetProperty="GradientStops[2].Color" From="{StaticResource HooveredButtonLowerPartKey}" To="{StaticResource ButtonLowerPartKey}" Duration="0:0:1" />
</Storyboard>
</BeginStoryboard>
</EventTrigger>
</Grid.Triggers>
</Grid>
<ControlTemplate.Resources>
<Storyboard x:Key="MouseUpTimeLine">
<DoubleAnimationUsingKeyFrames BeginTime="00:00:00" Storyboard.TargetName="Pressed" Storyboard.TargetProperty="Opacity">
<SplineDoubleKeyFrame KeyTime="00:00:00.25" Value="0" />
</DoubleAnimationUsingKeyFrames>
</Storyboard>
<Storyboard x:Key="MouseDownTimeLine">
<DoubleAnimationUsingKeyFrames BeginTime="00:00:00" Storyboard.TargetName="Pressed" Storyboard.TargetProperty="Opacity">
<SplineDoubleKeyFrame KeyTime="00:00:00.05" Value="0.8" />
</DoubleAnimationUsingKeyFrames>
</Storyboard>
<Storyboard x:Key="InnerPressedMouseUpTimeLine">
<DoubleAnimationUsingKeyFrames BeginTime="00:00:00" Storyboard.TargetName="InnerPressed" Storyboard.TargetProperty="Opacity">
<SplineDoubleKeyFrame KeyTime="00:00:00.25" Value="0" />
</DoubleAnimationUsingKeyFrames>
</Storyboard>
<Storyboard x:Key="InnerPressedMouseDownTimeLine">
<DoubleAnimationUsingKeyFrames BeginTime="00:00:00" Storyboard.TargetName="InnerPressed" Storyboard.TargetProperty="Opacity">
<SplineDoubleKeyFrame KeyTime="00:00:00.05" Value="1" />
</DoubleAnimationUsingKeyFrames>
</Storyboard>
</ControlTemplate.Resources>
<ControlTemplate.Triggers>
<Trigger Property="IsMouseOver" SourceName="Grid" Value="True">
<Setter Property="Stroke" TargetName="ButtonControlBorder">
<Setter.Value>
<SolidColorBrush Color="{StaticResource HooveredButtonLowerPartKey}">
</SolidColorBrush>
</Setter.Value>
</Setter>
</Trigger>
<Trigger Property="ButtonBase.IsPressed" Value="True">
<Trigger.EnterActions>
<BeginStoryboard Storyboard="{StaticResource MouseDownTimeLine}" />
<BeginStoryboard Storyboard="{StaticResource InnerPressedMouseDownTimeLine}">
</BeginStoryboard>
</Trigger.EnterActions>
<Trigger.ExitActions>
<BeginStoryboard Storyboard="{StaticResource MouseUpTimeLine}" />
<BeginStoryboard Storyboard="{StaticResource InnerPressedMouseUpTimeLine}">
</BeginStoryboard>
</Trigger.ExitActions>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
BaseObservableObject是INCP的简单实现。
RelayCommand是ICommand接口的简单实现。
如果您对代码有疑问，我很乐意提供帮助。 的问候，