WPF 自定义一个MessageBox控件

WPF 自定义一个MessageBox控件

先看效果：

新建一个WPF窗体UMessageBox：
xaml代码：

<Window x:Class="WPF20201123.Views.UMessageBox"
        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:WPF20201123.Views"
        mc:Ignorable="d"
        Title="UMessageBox" Height="150" Width="350" WindowStyle="None" Background="{x:Null}"  
        ResizeMode="NoResize"  x:Name="main"
        AllowsTransparency="True" WindowStartupLocation="CenterScreen">
    <!--<Window.Triggers>
        <EventTrigger RoutedEvent="Window.Loaded" >
            <BeginStoryboard>
                <Storyboard Name="sbOpShow">
                    <DoubleAnimation
                    Storyboard.TargetName="main" 
                    Storyboard.TargetProperty="Opacity" 
                    From="0" To="0.8" Duration="0:0:0.15"/>
                </Storyboard>
            </BeginStoryboard>
        </EventTrigger>
    </Window.Triggers>-->
    <Window.Resources>
        <Style x:Key="btn_Close" TargetType="{x:Type Button}">
            <Setter Property="Template">
                <Setter.Value>
                    <ControlTemplate TargetType="Button">
                        <Border Background="{TemplateBinding Background}">
                            <ContentPresenter VerticalAlignment="{TemplateBinding VerticalContentAlignment}"
                                              HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}"></ContentPresenter>
                        </Border>
                    </ControlTemplate>
                </Setter.Value>
            </Setter>
            <Setter Property="FontSize" Value="18"/>
            <Setter Property="BorderThickness" Value="0"/>
            <Setter Property="Background" Value="Transparent"/>
            <Style.Triggers>
                <Trigger Property="IsMouseOver" Value="True">
                    <Setter Property="Opacity" Value="0.7"/>
                </Trigger>
                <!--<Trigger Property="IsMouseOver" Value="False">
                    <Setter Property="Background" Value="#EEF0F5"/>
                </Trigger>-->
            </Style.Triggers>
        </Style>
        <Style x:Key="BtnInfoStyle" TargetType="Button">
            <Setter Property="Width" Value="70"/>
            <Setter Property="Height" Value="25"/>
            <Setter Property="Foreground" Value="White"/>
            <Setter Property="BorderThickness" Value="0"/>
            <Setter Property="Background" Value="#43a9c7"/>
            <Setter Property="Template">
                <Setter.Value>
                    <ControlTemplate TargetType="Button">
                        <Border x:Name="border" CornerRadius="2" Background="{TemplateBinding Background}" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" SnapsToDevicePixels="True">
                            <TextBlock Text="{TemplateBinding Content}" Foreground="{TemplateBinding Foreground}" VerticalAlignment="Center" HorizontalAlignment="Center"/>
                        </Border>
                        <ControlTemplate.Triggers>
                            <Trigger Property="IsMouseOver" Value="True">
                                <!--<Setter TargetName="border" Property="Background" Value="#2f96b4"/>-->
                                <Setter TargetName="border" Property="Opacity" Value="0.8"/>
                            </Trigger>
                            <Trigger Property="IsPressed" Value="True">
                                <!--<Setter TargetName="border" Property="Background" Value="#2a89a4"/>-->
                            </Trigger>
                        </ControlTemplate.Triggers>
                    </ControlTemplate>
                </Setter.Value>
            </Setter>
        </Style>
    </Window.Resources>
    
    <Border Margin="5" Background="White" CornerRadius="0">
        <Border.Effect>
            <DropShadowEffect Color="Gray" ShadowDepth="0" BlurRadius="10" Opacity="0.3" Direction="0"/>
        </Border.Effect>
        <Grid>
            <!--内容区-->
            <Grid>
                <Grid.RowDefinitions>
                    <RowDefinition Height="*"/>
                    <RowDefinition Height="2*"/>
                    <RowDefinition Height="*"/>
                </Grid.RowDefinitions>
                <!--Background="#EEF0F5"-->
                <Grid Grid.Row="0" Name="panel_Title" Background="#3C6AB1" MouseLeftButtonDown="panel_Title_MouseLeftButtonDown">
                    <TextBlock x:Name="lblTitle" Text="提示" Foreground="White" FontSize="14" Margin="10 0 0 0" VerticalAlignment="Center"/>
                    <Button x:Name="btn_Close" Content="✕" Style="{StaticResource btn_Close}" HorizontalAlignment="Right" Foreground="White" Margin="0 0 5 0" Height="30" Width="30" Click="btn_Close_Click"/>
                </Grid>
                <StackPanel Orientation="Horizontal" HorizontalAlignment="Center"  Grid.Row="1">
                    <TextBlock Text="&#xe62a;" FontFamily="/Fonts/#iconfont" Foreground="#3C6AB1" FontSize="18" VerticalAlignment="Center" Margin="0 0 5 0"/>
                    <TextBlock x:Name="lblMsg" Text="欢迎使用！" Foreground="#666666" HorizontalAlignment="Center" VerticalAlignment="Center" TextWrapping="Wrap"/>
                </StackPanel>
                <StackPanel Grid.Row="2" Orientation="Horizontal" HorizontalAlignment="Right">
                    <!--<Button Width="60" Height="25" Content="取消" Margin="0 0 10 0" Style="{StaticResource BtnInfoStyle}" Background="Gray" Name="btn_Cancel" Click="btn_Cancel_Click"/>-->
                    <Button Width="60" Height="25" Content="确定" Margin="0 0 10 0" Style="{StaticResource BtnInfoStyle}" Background="#3C6AB1" Name="btn_OK" Click="btn_OK_Click"/>
                </StackPanel>
            </Grid>
        </Grid>
    </Border>

    <!--<Border Background="#F03A3A3A" Opacity="1" CornerRadius="3">
        <Canvas>

            <Border Canvas.Top="0" Height="25" Width="{Binding ElementName=main, Path=Width,UpdateSourceTrigger=PropertyChanged}" 
                    BorderThickness="0,0,0,1" BorderBrush="#FFEFE2E2">
                <TextBlock x:Name="lblTitle" Text="test" HorizontalAlignment="Left" 
                           Foreground="#FFCBBEBE" FontSize="14"
                           VerticalAlignment="Center" Margin="5"/>
            </Border>
            <TextBlock x:Name="lblMsg"
                       Foreground="White" FontSize="14" 
                       TextWrapping="Wrap" Text="test"
                       HorizontalAlignment="Center" Canvas.Left="20"
                       Canvas.Top="50" 
                       />
            <Border BorderBrush="#FF60C1C1" BorderThickness="0.5" Height="22" 
                    Canvas.Bottom="10" Canvas.Right="85" MouseLeftButtonDown="Yes_MouseLeftButtonDown"
                 Name="border1" Width="49" Background="#FFC7C7C7" CornerRadius="2">
                <TextBlock Text="YES"  HorizontalAlignment="Center" VerticalAlignment="Center"/>
            </Border>
            <Border BorderBrush="#FF60C1C1" BorderThickness="0.5" Height="22" 
                    Canvas.Bottom="10" Canvas.Right="30" MouseLeftButtonDown="No_MouseLeftButtonDown"
                Name="border2" Width="49" CornerRadius="2" Background="#FFC7C7D1">
                <TextBlock Text="NO"  HorizontalAlignment="Center" VerticalAlignment="Center"/>
            </Border>
        </Canvas>
    </Border>-->
</Window>

后台代码：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
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.Shapes;

namespace WPF20201123.Views
{
    /// <summary>
    /// UMessageBox.xaml 的交互逻辑
    /// </summary>
    public partial class UMessageBox : Window
    {
        public UMessageBox()
        {
            InitializeComponent();
        }

        public new string Title
        {
            get { return this.lblTitle.Text; }
            set { this.lblTitle.Text = value; }
        }

        public string Message
        {
            get { return this.lblMsg.Text; }
            set { this.lblMsg.Text = value; }
        }

        /// <summary>
        /// 静态方法 模拟MESSAGEBOX.Show方法
        /// </summary>
        /// <param name="title">标题</param>
        /// <param name="msg">消息</param>
        /// <returns></returns>
        public static bool? Show(string title, string msg)
        {
            var msgBox = new UMessageBox();
            msgBox.Title = title;
            msgBox.Message = msg;
            return msgBox.ShowDialog();
        }

        //private void Yes_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
        //{
        //    this.DialogResult = true;
        //    this.Close();
        //}


        //private void No_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
        //{
        //    this.DialogResult = false;
        //    this.Close();
        //}

        private void btn_Cancel_Click(object sender, RoutedEventArgs e)
        {
            this.DialogResult = false;
            //this.Close();
        }

        private void btn_OK_Click(object sender, RoutedEventArgs e)
        {
            this.DialogResult = true;
            //this.Close();
        }

        private void panel_Title_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
        {
            if (e.ButtonState == MouseButtonState.Pressed)
            {
                this.DragMove();
            }
        }

        private void btn_Close_Click(object sender, RoutedEventArgs e)
        {
            this.Close();
        }
    }
}

使用方法：

UMessageBox.Show("提示：", "欢迎使用！");

或

 bool? result = UMessageBox.Show("提示：", "导出成功！是否用IDE运行？");
 if(result == true)
 {
     //其它
 }