基于WPF实现带蒙版的MessageBox消息提示框

介绍

框架使用大于等于.NET40；

Visual Studio 2022;

项目使用 MIT 开源许可协议；

Nuget Install-Package WPFDevelopers.Minimal 3.2.6-preview

MessageBox

实现MessageBox的Show五种方法；

Show(string messageBoxText) 传入Msg参数；

Show(string messageBoxText, string caption) 传入Msg与标题参数；

Show(string messageBoxText, string caption, MessageBoxButton button) 传入Msg与标题、操作按钮参数；

Show(string messageBoxText, string caption, MessageBoxImage icon) 传入Msg与标题、消息图片参数；

Show(string messageBoxText, string caption, MessageBoxButton button, MessageBoxImage icon) 传入Msg与标题、操作按钮、消息图片参数；

拿到父级Window窗体的内容Content,放入一个Grid里,再在容器里放入一个半透明的Grid，最后将整个Grid赋给父级Window窗体的内容Content；

实现代码

一、MessageBox.cs 代码如下；

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Media;
namespace WPFDevelopers.Minimal.Controls
{
    public static class MessageBox
    {
        public static MessageBoxResult Show(string messageBoxText)
        {
            var msg = new WPFMessageBox(messageBoxText);
            return GetWindow(msg);
        }
        public static MessageBoxResult Show(string messageBoxText, string caption)
        {
            var msg = new WPFMessageBox(messageBoxText, caption);
            return GetWindow(msg);
        }
        public static MessageBoxResult Show(string messageBoxText, string caption, MessageBoxButton button)
        {
            var msg = new WPFMessageBox(messageBoxText, caption, button);
            return GetWindow(msg);
        }
        public static MessageBoxResult Show(string messageBoxText, string caption, MessageBoxImage icon)
        {
            var msg = new WPFMessageBox(messageBoxText, caption, icon);
            return GetWindow(msg);
        }
        public static MessageBoxResult Show(string messageBoxText, string caption, MessageBoxButton button, MessageBoxImage icon)
        {
            var msg = new WPFMessageBox(messageBoxText, caption,button,icon);
            return GetWindow(msg);
        }
        static MessageBoxResult GetWindow(WPFMessageBox msg)
        {
            msg.WindowStartupLocation = WindowStartupLocation.CenterOwner;
            Window win = null;
            if (Application.Current.Windows.Count > 0)
                win = Application.Current.Windows.OfType<Window>().FirstOrDefault(o => o.IsActive);
            if (win != null)
            {
                var layer = new Grid() { Background = new SolidColorBrush(Color.FromArgb(128, 0, 0, 0)) };
                UIElement original = win.Content as UIElement;
                win.Content = null;
                var container = new Grid();
                container.Children.Add(original);
                container.Children.Add(layer);
                win.Content = container;
                msg.Owner = win;
                msg.ShowDialog();
                container.Children.Clear();
                win.Content = original;
            }
            else
                msg.Show();
            return msg.Result;
        }
    }
}

二、Styles.MessageBox.xaml 代码如下；

<ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
                    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
                    xmlns:sys="clr-namespace:System;assembly=mscorlib"
                    xmlns:wpfsc="clr-namespace:WPFDevelopers.Minimal.Controls">
    <ResourceDictionary.MergedDictionaries>
        <ResourceDictionary Source="../Themes/Basic/ControlBasic.xaml"/>
        <ResourceDictionary Source="../Themes/Basic/Animations.xaml"/>
    </ResourceDictionary.MergedDictionaries>
    <Style TargetType="{x:Type wpfsc:WPFMessageBox}">
        <Setter Property="Foreground" Value="{DynamicResource PrimaryTextSolidColorBrush}" />
        <Setter Property="Background"  Value="{DynamicResource WhiteSolidColorBrush}" />
        <Setter Property="BorderBrush" Value="{DynamicResource PrimaryNormalSolidColorBrush}" />
        <Setter Property="SizeToContent"  Value="WidthAndHeight" />
        <Setter Property="ResizeMode" Value="NoResize" />
        <Setter Property="ShowInTaskbar" Value="False" />
        <Setter Property="SnapsToDevicePixels" Value="True"/>
        <Setter Property="UseLayoutRounding" Value="True" />
        <Setter Property="TextOptions.TextFormattingMode" Value="Display" />
        <Setter Property="TextOptions.TextRenderingMode" Value="ClearType" />
        <Setter Property="WindowStyle"  Value="None" />
        <Setter Property="FontFamily" Value="{DynamicResource NormalFontFamily}" />
        <Setter Property="Template">
            <Setter.Value>
                <ControlTemplate TargetType="{x:Type wpfsc:WPFMessageBox}">
                    <Border Background="{TemplateBinding Background}"
                            BorderBrush="{TemplateBinding BorderBrush}"
                            BorderThickness="{TemplateBinding BorderThickness}">
                        <Grid>
                            <Grid.RowDefinitions>
                                <RowDefinition/>
                                <RowDefinition />
                                <RowDefinition/>
                            </Grid.RowDefinitions>
                            <Grid Grid.Row="0">
                                <DockPanel Margin="20,0,0,0">
                                    <TextBlock x:Name="PART_Title"
                                           HorizontalAlignment="Left"
                                           VerticalAlignment="Center" 
                                           FontSize="{DynamicResource TitleFontSize}"
                                           Foreground="{DynamicResource PrimaryTextSolidColorBrush}"/>
                                    <Button Name="PART_CloseButton" Margin="0,6" 
                                            ToolTip="Close" HorizontalAlignment="Right"
                                            IsTabStop="False" Style="{DynamicResource WindowButtonStyle}">
                                        <Path Width="10" Height="10"
                              HorizontalAlignment="Center"
                              VerticalAlignment="Center"
                              Data="{DynamicResource PathMetroWindowClose}"
                              Fill="{DynamicResource PrimaryTextSolidColorBrush}"
                              Stretch="Fill" />
                                    </Button>
                                </DockPanel>
                            </Grid>
                            <Grid Grid.Row="1" Margin="20">
                                <DockPanel>
                                    <Path x:Name="PART_Path" Data="{DynamicResource PathInformation}"
                                      Fill="{DynamicResource PrimaryNormalSolidColorBrush}"
                                      Height="25" Width="25" Stretch="Fill"></Path>
                                    <TextBlock x:Name="PART_Message" TextWrapping="Wrap" 
                                           MaxWidth="500" Width="Auto" VerticalAlignment="Center"
                                           FontSize="{DynamicResource NormalFontSize}"
                                           Padding="10,0"
                                           Foreground="{DynamicResource RegularTextSolidColorBrush}"/>
                                </DockPanel>
                            </Grid>
                            <Grid Grid.Row="2" Margin="140,20,10,10">
                                <StackPanel Orientation="Horizontal" HorizontalAlignment="Right">
                                    <Button x:Name="PART_ButtonCancel" Content="取消" Visibility="Collapsed"/>
                                    <Button x:Name="PART_ButtonOK" Style="{DynamicResource PrimaryButton}" 
                                        Margin="10,0,0,0" Content="确认"/>
                                </StackPanel>
                            </Grid>
                        </Grid>
                    </Border>
                </ControlTemplate>
            </Setter.Value>
        </Setter>
    </Style>
</ResourceDictionary>

三、WPFMessageBox.cs 代码如下；

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Text;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Media;
using System.Windows.Shapes;
namespace WPFDevelopers.Minimal.Controls
{
    [TemplatePart(Name = TitleTemplateName, Type = typeof(TextBlock))]
    [TemplatePart(Name = CloseButtonTemplateName, Type = typeof(Button))]
    [TemplatePart(Name = MessageTemplateName, Type = typeof(TextBlock))]
    [TemplatePart(Name = ButtonCancelTemplateName, Type = typeof(Button))]
    [TemplatePart(Name = ButtonCancelTemplateName, Type = typeof(Button))]
    [TemplatePart(Name = PathTemplateName, Type = typeof(Path))]
    public sealed class WPFMessageBox : Window
    {
        private const string TitleTemplateName = "PART_Title";
        private const string CloseButtonTemplateName = "PART_CloseButton";
        private const string MessageTemplateName = "PART_Message";
        private const string ButtonCancelTemplateName = "PART_ButtonCancel";
        private const string ButtonOKTemplateName = "PART_ButtonOK";
        private const string PathTemplateName = "PART_Path";
        private string _messageString;
        private string _titleString;
        private Geometry _geometry;
        private SolidColorBrush _solidColorBrush;
        private Visibility _cancelVisibility = Visibility.Collapsed;
        private Visibility _okVisibility;
        private TextBlock _title;
        private TextBlock _message;
        private Button _closeButton;
        private Button _buttonCancel;
        private Button _buttonOK;
        private Path _path;
        static WPFMessageBox()
        {
            DefaultStyleKeyProperty.OverrideMetadata(typeof(WPFMessageBox), new FrameworkPropertyMetadata(typeof(WPFMessageBox)));
        }
        public override void OnApplyTemplate()
        {
            base.OnApplyTemplate();
            _title = GetTemplateChild(TitleTemplateName) as TextBlock;
            _message = GetTemplateChild(MessageTemplateName) as TextBlock;
            if (_title == null || _message == null)
                throw new InvalidOperationException("the title or message control is null!");
            _title.Text = _titleString;
            _message.Text = _messageString;
            _path = GetTemplateChild(PathTemplateName) as Path;
            if (_path != null)
            {
                _path.Data = _geometry;
                _path.Fill = _solidColorBrush;
            }
            _closeButton = GetTemplateChild(CloseButtonTemplateName) as Button;
            if (_closeButton != null)
                _closeButton.Click += _closeButton_Click;
            _buttonCancel = GetTemplateChild(ButtonCancelTemplateName) as Button;
            if (_buttonCancel != null)
            {
                _buttonCancel.Visibility = _cancelVisibility;
                _buttonCancel.Click += _buttonCancel_Click;
            }
            _buttonOK = GetTemplateChild(ButtonOKTemplateName) as Button;
            if (_buttonOK != null)
            {
                _buttonOK.Visibility = _okVisibility;
                _buttonOK.Click += _buttonOK_Click;
            }
            if (Owner == null)
            {
                BorderThickness = new Thickness(1);
                WindowStartupLocation = WindowStartupLocation.CenterScreen;
            }
        }
        private void _buttonOK_Click(object sender, RoutedEventArgs e)
        {
            Result = MessageBoxResult.OK;
            Close();
        }
        private void _buttonCancel_Click(object sender, RoutedEventArgs e)
        {
            Result = MessageBoxResult.Cancel;
            Close();
        }
        private void _closeButton_Click(object sender, RoutedEventArgs e)
        {
            Close();
        }
        protected override void OnClosed(EventArgs e)
        {
            base.OnClosed(e);
            if (Owner == null)
                return;
            var grid = Owner.Content as Grid;
            UIElement original = VisualTreeHelper.GetChild(grid, 0) as UIElement;
            grid.Children.Remove(original);
            Owner.Content = original;
        }
        public MessageBoxResult Result { get; set; }
        public WPFMessageBox(string message)
        {
            _messageString = message;
        }
        public WPFMessageBox(string message, string caption)
        {
            _titleString = caption;
            _messageString = message;
        }
        public WPFMessageBox(string message, string caption, MessageBoxButton button)
        {
            _titleString = caption;
            _messageString = message; ;
        }
        public WPFMessageBox(string message, string caption, MessageBoxImage image)
        {
            _titleString = caption;
            _messageString = message;
            DisplayImage(image);
        }
        public WPFMessageBox(string message, string caption, MessageBoxButton button, MessageBoxImage image)
        {
            _titleString = caption;
            _messageString = message;
            DisplayImage(image);
            DisplayButtons(button);
        }
        private void DisplayButtons(MessageBoxButton button)
        {
            switch (button)
            {
                case MessageBoxButton.OKCancel:
                case MessageBoxButton.YesNo:
                    _cancelVisibility = Visibility.Visible;
                    _okVisibility = Visibility.Visible;
                    break;
                //case MessageBoxButton.YesNoCancel:
                //    break;
                default:
                    _okVisibility = Visibility.Visible;
                    break;
            }
        }
        private void DisplayImage(MessageBoxImage image)
        {
            switch (image)
            {
                case MessageBoxImage.Warning:
                    _geometry = Application.Current.Resources["PathWarning"] as Geometry;
                    _solidColorBrush = Application.Current.Resources["WarningSolidColorBrush"] as SolidColorBrush;
                    break;
                case MessageBoxImage.Error:
                    _geometry = Application.Current.Resources["PathError"] as Geometry;
                    _solidColorBrush = Application.Current.Resources["DangerSolidColorBrush"] as SolidColorBrush;
                    break;
                case MessageBoxImage.Information:
                    _geometry = Application.Current.Resources["PathWarning"] as Geometry;
                    _solidColorBrush = Application.Current.Resources["SuccessSolidColorBrush"] as SolidColorBrush;
                    break;
                case MessageBoxImage.Question:
                    _geometry = Application.Current.Resources["PathQuestion"] as Geometry;
                    _solidColorBrush = Application.Current.Resources["PrimaryNormalSolidColorBrush"] as SolidColorBrush;
                    break;
                default:
                    break;
            }
        }
    }
}

Nuget Install-Package WPFDevelopers.Minimal

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