WPF弹出窗口：如何为弹出窗口创建可重用的模板？

既然弹出窗口不是从控件派生的，也没有模板，我如何定义一个模板，使所有弹出窗口看起来都一样？我需要设计一个具有特定外观的，不希望每次使用时都要复制标记

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这看起来很容易，但我不知道怎么做。Child属性定义了一个逻辑树，但我不知道如何将它拉到模板中并重用它。

取决于您希望弹出窗口的行为。如果它们只是为了以统一的方式显示信息，那么您可能希望有一个从

窗口

派生的类，该类的标准格式和样式围绕着

ContentPresenter

，然后将presenter的内容绑定到一个属性，该属性可以表示每个弹出窗口的自定义信息

然后，在显示弹出窗口之前，只需通过编程插入所需的自定义内容即可

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希望能有帮助

我想做同样的事情，下面是我的想法：

我继承了

ContentPresenter

，根据需要对该控件进行了样式设置，然后将派生的

ContentPresenter

放置在我的

弹出窗口中，为了简单起见，我只使用了两个文本块，但很容易理解如何添加任何内容

我的自定义控件：

using System.Windows;
using System.Windows.Controls;

namespace CustomControls
{
    [TemplatePart(Name = PART_PopupHeader, Type = typeof(TextBlock))]
    [TemplatePart(Name = PART_PopupContent, Type = typeof(TextBlock))]

    public class CustomPopupControl : ContentControl
    {
        private const string PART_PopupHeader = "PART_PopupHeader";
        private const string PART_PopupContent = "PART_PopupContent";

        private TextBlock _headerBlock = null;
        private TextBlock _contentBlock = null;

        static CustomPopupControl()
        {
            DefaultStyleKeyProperty.OverrideMetadata
                (typeof(CustomPopupControl), 
                new FrameworkPropertyMetadata(typeof(CustomPopupControl)));
        }

        public override void OnApplyTemplate()
        {
            base.OnApplyTemplate();
            _headerBlock = GetTemplateChild(PART_PopupHeader) as TextBlock;
            _contentBlock = GetTemplateChild(PART_PopupContent) as TextBlock;
        }

        public static readonly DependencyProperty HeaderTextProperty =
            DependencyProperty.Register("HeaderText", typeof(string), typeof(CustomPopupControl), new UIPropertyMetadata(string.Empty));

        public string HeaderText
        {
            get
            {
                return (string)GetValue(HeaderTextProperty);
            }
            set
            {
                SetValue(HeaderTextProperty, value);
            }
        }

        public static readonly DependencyProperty ContentTextProperty =
            DependencyProperty.Register("ContentText", typeof(string), typeof(CustomPopupControl), new UIPropertyMetadata(string.Empty));

        public string ContentText
        {
            get
            {
                return (string)GetValue(ContentTextProperty);
            }
            set
            {
                SetValue(ContentTextProperty, value);
            }
        }
    }
}

控件的样式：

<ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
                xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"                  
                xmlns:local="clr-namespace:CustomControls">

<Style TargetType="{x:Type local:CustomPopupControl}">
    <Setter Property="Template">
        <Setter.Value>
            <ControlTemplate TargetType="{x:Type local:CustomPopupControl}">
                <Border CornerRadius="3" BorderThickness="1" BorderBrush="White">
                    <Border.Background>
                        <SolidColorBrush Color="#4b4b4b" Opacity="0.75"/>
                    </Border.Background>
                    <Border.Effect>
                        <DropShadowEffect ShadowDepth="0"
                            Color="White"
                            Opacity="1"
                            BlurRadius="5"/>
                    </Border.Effect>
                    <Grid>
                        <Grid.RowDefinitions>
                            <RowDefinition Height="Auto"/>
                            <RowDefinition Height="Auto"/>
                            <RowDefinition Height="*"/>
                        </Grid.RowDefinitions>
                        <TextBlock Text="{TemplateBinding HeaderText}"
                                   Grid.Row="0"
                                   Foreground="#5095d6"
                                   FontWeight="Bold"
                                   VerticalAlignment="Bottom"
                                   Margin="{TemplateBinding Margin}"
                                   HorizontalAlignment="Left"/>
                        <Rectangle Grid.Row="1" Stroke="AntiqueWhite" Margin="1 0"></Rectangle>
                        <TextBlock Grid.Row="2"
                                   Grid.ColumnSpan="2"                                
                                   x:Name="PART_TooltipContents"
                                   Margin="5, 2"
                                   Text="{TemplateBinding ContentText}"
                                   TextWrapping="Wrap"
                                   MaxWidth="200"/>
                    </Grid>
                </Border>
            </ControlTemplate>
        </Setter.Value>
    </Setter>
</Style>

<StackPanel Grid.Row="1" Orientation="Horizontal" HorizontalAlignment="Center">
    <Button x:Name="Button1" Content="Button with popup" HorizontalAlignment="Center">
    </Button>
    <Button x:Name="Button2" Content="Another button with popup" HorizontalAlignment="Center">
    </Button>
    <Popup  IsOpen="True"
        FlowDirection="LeftToRight"
        Margin="10"
        PlacementTarget="{Binding ElementName=Button1}" 
        Placement="top" 
        StaysOpen="True">
        <local2:CustomPopupControl HeaderText="Some Header Text" ContentText="Content Text that could be any text needed from a binding or other source" Margin="2">

        </local2:CustomPopupControl>
    </Popup>
    <Popup  IsOpen="True"
        FlowDirection="LeftToRight"
        Margin="10"
        PlacementTarget="{Binding ElementName=Button2}" 
        Placement="Bottom" 
        StaysOpen="True">
        <local2:CustomPopupControl HeaderText="Different header text" ContentText="Some other text" Margin="2">

        </local2:CustomPopupControl>
    </Popup>
</StackPanel>




控件的使用：

<ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
                xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"                  
                xmlns:local="clr-namespace:CustomControls">

<Style TargetType="{x:Type local:CustomPopupControl}">
    <Setter Property="Template">
        <Setter.Value>
            <ControlTemplate TargetType="{x:Type local:CustomPopupControl}">
                <Border CornerRadius="3" BorderThickness="1" BorderBrush="White">
                    <Border.Background>
                        <SolidColorBrush Color="#4b4b4b" Opacity="0.75"/>
                    </Border.Background>
                    <Border.Effect>
                        <DropShadowEffect ShadowDepth="0"
                            Color="White"
                            Opacity="1"
                            BlurRadius="5"/>
                    </Border.Effect>
                    <Grid>
                        <Grid.RowDefinitions>
                            <RowDefinition Height="Auto"/>
                            <RowDefinition Height="Auto"/>
                            <RowDefinition Height="*"/>
                        </Grid.RowDefinitions>
                        <TextBlock Text="{TemplateBinding HeaderText}"
                                   Grid.Row="0"
                                   Foreground="#5095d6"
                                   FontWeight="Bold"
                                   VerticalAlignment="Bottom"
                                   Margin="{TemplateBinding Margin}"
                                   HorizontalAlignment="Left"/>
                        <Rectangle Grid.Row="1" Stroke="AntiqueWhite" Margin="1 0"></Rectangle>
                        <TextBlock Grid.Row="2"
                                   Grid.ColumnSpan="2"                                
                                   x:Name="PART_TooltipContents"
                                   Margin="5, 2"
                                   Text="{TemplateBinding ContentText}"
                                   TextWrapping="Wrap"
                                   MaxWidth="200"/>
                    </Grid>
                </Border>
            </ControlTemplate>
        </Setter.Value>
    </Setter>
</Style>

<StackPanel Grid.Row="1" Orientation="Horizontal" HorizontalAlignment="Center">
    <Button x:Name="Button1" Content="Button with popup" HorizontalAlignment="Center">
    </Button>
    <Button x:Name="Button2" Content="Another button with popup" HorizontalAlignment="Center">
    </Button>
    <Popup  IsOpen="True"
        FlowDirection="LeftToRight"
        Margin="10"
        PlacementTarget="{Binding ElementName=Button1}" 
        Placement="top" 
        StaysOpen="True">
        <local2:CustomPopupControl HeaderText="Some Header Text" ContentText="Content Text that could be any text needed from a binding or other source" Margin="2">

        </local2:CustomPopupControl>
    </Popup>
    <Popup  IsOpen="True"
        FlowDirection="LeftToRight"
        Margin="10"
        PlacementTarget="{Binding ElementName=Button2}" 
        Placement="Bottom" 
        StaysOpen="True">
        <local2:CustomPopupControl HeaderText="Different header text" ContentText="Some other text" Margin="2">

        </local2:CustomPopupControl>
    </Popup>
</StackPanel>



我试图说明一些属性如何在所有控件中保持不变，其他属性如何在每个控件中自定义，其他属性如何绑定到
TemplatePart
，最后的结果如下：