C# WPF遮罩对话框(Popup Message Overlay/ Dialog Host)

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阅读导航:

  • 一、先看效果
  • 二、本文背景
  • 三、代码实现
  • 四、文章参考
  • 五、代码下载

一、先看效果

二、本文背景

YouTube  Design com WPF 大神处习得,常用的遮罩对话框实现,使用的开源 C# WPF控件库 MaterialDesignInXAML ,本站曾有介绍:开源C# WPF控件库《MaterialDesignInXAML》

三、代码实现

3.1 添加Nuget库

站长使用.Net Core 3.1创建的WPF工程,创建“ScreenOverlayMessage”解决方案后,需要添加两个Nuget库:MaterialDesignThemes和MaterialDesignColors,上图的效果是使用该控件库实现的,非常强大。

3.2 工程结构

不需要截图,只修改了两个文件,App.xaml添加MD控件4个样式文件,MainWindow主窗口实现效果。

3.3 App.xaml引入MD控件样式

<Application x:Class="DropDownMenu.App"             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"             xmlns:local="clr-namespace:DropDownMenu"             StartupUri="MainWindow.xaml">    <Application.Resources>        <ResourceDictionary>            <ResourceDictionary.MergedDictionaries>                <ResourceDictionary Source="pack://application:,,,/MaterialDesignThemes.Wpf;component/Themes/MaterialDesignTheme.Light.xaml"/>                <ResourceDictionary Source="pack://application:,,,/MaterialDesignThemes.Wpf;component/Themes/MaterialDesignTheme.Defaults.xaml"/>                <ResourceDictionary Source="pack://application:,,,/MaterialDesignColors;component/Themes/Recommended/Primary/MaterialDesignColor.Blue.xaml"/>                <ResourceDictionary Source="pack://application:,,,/MaterialDesignColors;component/Themes/Recommended/Accent/MaterialDesignColor.Indigo.xaml"/>            </ResourceDictionary.MergedDictionaries>        </ResourceDictionary>    </Application.Resources></Application>

3.4 主窗体

MainWindow.xaml,整体布局,看上图加上下面的界面代码,添加界面左上角logo图标、左侧导航菜单等,下面即是全部代码。

<Window x:Class="ScreenOverlayMessage.MainWindow"        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:local="clr-namespace:ScreenOverlayMessage"        mc:Ignorable="d"        xmlns:materialDesign="http://materialdesigninxaml.net/winfx/xaml/themes" MouseDown="Window_MouseDown"        Title="MainWindow" Height="576" Width="1024" ResizeMode="NoResize" WindowStartupLocation="CenterScreen" WindowStyle="None" Background="#FF423A3A">    <Grid>        <materialDesign:DialogHost BorderBrush="{DynamicResource MaterialDesignDivider}">            <materialDesign:DialogHost.DialogContent>                <Grid Width="300" Height="150" HorizontalAlignment="Center">                    <StackPanel Orientation="Horizontal" Margin="15">                        <materialDesign:PackIcon Kind="Folder" Foreground="{StaticResource PrimaryHueMidBrush}" Width="50" Height="50"/>                        <TextBlock Foreground="Gray" Width="200" Margin="15 5" TextWrapping="Wrap">                            允许应用程序访问您计算机上的照片、媒体和文件?                        </TextBlock>                    </StackPanel>                    <StackPanel Orientation="Horizontal" HorizontalAlignment="Right" VerticalAlignment="Bottom" Margin="15">                        <Button Command="{x:Static materialDesign:DialogHost.CloseDialogCommand}" Style="{DynamicResource MaterialDesignFlatButton}" Margin="4" VerticalAlignment="Center">                            拒绝                        </Button>                        <Button Command="{x:Static materialDesign:DialogHost.CloseDialogCommand}" Style="{DynamicResource MaterialDesignFlatButton}" Margin="4" VerticalAlignment="Center">                            允许                        </Button>                    </StackPanel>                </Grid>            </materialDesign:DialogHost.DialogContent>            <Grid>                <StackPanel Width="200" HorizontalAlignment="Left" Background="#FF472076">                    <Grid Height="150" Background="White">                        <Image Source="https://img.dotnet9.com/logo.png"/>                    </Grid>                    <Button Style="{StaticResource MaterialDesignFlatButton}" Command="{x:Static materialDesign:DialogHost.OpenDialogCommand}">                        <StackPanel Orientation="Horizontal" Height="30">                            <materialDesign:PackIcon Kind="PhotoAlbum" Width="20" Height="20" VerticalAlignment="Center"/>                            <TextBlock Text="照片" Margin="20 0" FontSize="15" VerticalAlignment="Center"/>                        </StackPanel>                    </Button>                    <Button Style="{StaticResource MaterialDesignFlatButton}" Command="{x:Static materialDesign:DialogHost.OpenDialogCommand}">                        <StackPanel Orientation="Horizontal" Height="30">                            <materialDesign:PackIcon Kind="Music" Width="20" Height="20" VerticalAlignment="Center"/>                            <TextBlock Text="音乐" Margin="20 0" FontSize="15" VerticalAlignment="Center"/>                        </StackPanel>                    </Button>                </StackPanel>            </Grid>        </materialDesign:DialogHost>    </Grid></Window>

重点讲解:

  • materialDesign:DialogHost:设置遮罩对话框覆盖的地方,即弹出遮罩对话框后,背后有阴影的位置。
  • materialDesign:DialogHost.DialogContent:对话框内容,即弹出的对话框配置

后台有个拖动窗体代码:

private void Window_MouseDown(object sender, MouseButtonEventArgs e){    DragMove();}

四、文章参考

建议直接打开大神视频学习,他的YouTube上还有很多代码视频哦,参考:
参考视频: Design com WPF: https://www.youtube.com/watch?v=Dwi9o3K73XM

五、代码下载

文章中代码已经全部贴出。

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