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C# WPF聊天界面（3/3）

閱讀導航

本文背景
代碼實現
本文參考

1.本文背景

系列文章最後一篇，一個完整的聊天界面。當然只看效果，具體的項目需要將左側好友列表、中間會話列表、右側聯繫人簡況做成MVVM綁定的形式，做成模板纔是一個完整的項目，本系列只是對界面的一個設計參考。

前面兩篇文章：

三篇文章最終效果如下：

2.代碼實現

使用 .Net CORE 3.1 創建名爲 “Chat” 的WPF項目，添加 MaterialDesignThemes(3.0.1)、MaterialDesignColors(1.2.2)兩個Nuget庫，文中圖片已全部替換爲站長網站logo圖片外鏈，直接Copy文中代碼即可運行，大家亦可下載原作者源碼研究學習，文末會給出源碼下載鏈接。

2.1 引入MD控件樣式文件

使用MD控件的常規操作，需要在App.xaml中引入4個樣式文件：

<Application x:Class="Chat.App"
             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
             StartupUri="MainWindow.xaml">
    <Application.Resources>
        <ResourceDictionary>
            <ResourceDictionary.MergedDictionaries>
                <ResourceDictionary Source="pack://application:,,,/MaterialDesignThemes.Wpf;component/Themes/MaterialDesignTheme.Dark.xaml" />
                <ResourceDictionary Source="pack://application:,,,/MaterialDesignThemes.Wpf;component/Themes/MaterialDesignTheme.Defaults.xaml" />
                <ResourceDictionary Source="pack://application:,,,/MaterialDesignColors;component/Themes/Recommended/Primary/MaterialDesignColor.Green.xaml" />
                <ResourceDictionary Source="pack://application:,,,/MaterialDesignColors;component/Themes/Recommended/Accent/MaterialDesignColor.Lime.xaml" />
            </ResourceDictionary.MergedDictionaries>
        </ResourceDictionary>
    </Application.Resources>
</Application>

2.2 界面佈局

純粹的佈局代碼：整個界面分爲左、中、右三塊，即好友列表、好友會話、好友簡況三部分，實際項目，需要將三塊做成模板進行MVVM綁定開發，方便擴展。

<Window x:Class="Chat.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:materialDesign="http://materialdesigninxaml.net/winfx/xaml/themes"
        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
        xmlns:local="clr-namespace:Chat"
        mc:Ignorable="d"
        Height="600" Width="1080" ResizeMode="NoResize" MouseLeftButtonDown="Window_MouseLeftButtonDown"
        WindowStartupLocation="CenterScreen" WindowStyle="None" FontFamily="Dosis">
    <Grid>
        <Grid.ColumnDefinitions>
            <ColumnDefinition Width="270"/>
            <ColumnDefinition Width="*"/>
            <ColumnDefinition Width="270"/>
        </Grid.ColumnDefinitions>

        <!--#region 左側好友列表-->
        <StackPanel Grid.Column="0" Background="{StaticResource PrimaryHueDarkBrush}">
            <StackPanel Orientation="Horizontal" Background="White">
                <Image Width="210" Height="80" Source="https://img.dotnet9.com/logo-head.png"/>
                <Button Style="{StaticResource MaterialDesignFlatButton}">
                    <materialDesign:PackIcon Kind="PlusCircle" Width="24" Height="24"/>
                </Button>
            </StackPanel>
            <TextBox Margin="20 10" Style="{StaticResource MaterialDesignFloatingHintTextBox}" materialDesign:HintAssist.Hint="搜索" Foreground="White"/>
            <Grid>
                <Grid.ColumnDefinitions>
                    <ColumnDefinition Width="*"/>
                    <ColumnDefinition Width="*"/>
                    <ColumnDefinition Width="*"/>
                    <ColumnDefinition Width="*"/>
                </Grid.ColumnDefinitions>

                <Button Style="{StaticResource MaterialDesignFlatButton}" Grid.Column="0">
                    <materialDesign:PackIcon Kind="History" Foreground="White"/>
                </Button>
                <Button Style="{StaticResource MaterialDesignFlatButton}" Grid.Column="1">
                    <materialDesign:PackIcon Kind="People" Foreground="White"/>
                </Button>
                <Button Style="{StaticResource MaterialDesignFlatButton}" Grid.Column="2">
                    <materialDesign:PackIcon Kind="Contacts" Foreground="White"/>
                </Button>
                <Button Style="{StaticResource MaterialDesignFlatButton}" Grid.Column="3">
                    <materialDesign:PackIcon Kind="Archive" Foreground="White"/>
                </Button>
            </Grid>
            <ListView>
                <ListViewItem HorizontalAlignment="Stretch">
                    <Grid HorizontalAlignment="Center" Margin="5">
                        <Grid.ColumnDefinitions>
                            <ColumnDefinition Width="50"/>
                            <ColumnDefinition Width="150"/>
                            <ColumnDefinition Width="50*"/>
                        </Grid.ColumnDefinitions>

                        <Border Width="40" Height="40" CornerRadius="25" BorderBrush="White" BorderThickness="0.6">
                            <Border.Background>
                                <ImageBrush ImageSource="https://img.dotnet9.com/logo.png"/>
                            </Border.Background>
                        </Border>
                        <Border Width="10" Height="10" VerticalAlignment="Bottom" Margin="5" HorizontalAlignment="Right" CornerRadius="15" Background="LightGreen"/>

                        <StackPanel Grid.Column="1">
                            <TextBlock Text="Dotnet9.com" Margin="10 0"/>
                            <TextBlock Text="一個熱衷於互聯網分享精神的程序員的網站！" Margin="10 0" TextTrimming="CharacterEllipsis" Opacity="0.6" FontSize="11"/>
                        </StackPanel>

                        <Border Grid.Column="2" Width="20" Height="20" CornerRadius="15" Background="White" HorizontalAlignment="Center" VerticalAlignment="Center" Margin="5">
                            <TextBlock FontSize="11" Text="9" Foreground="{StaticResource PrimaryHueDarkBrush}" HorizontalAlignment="Center" VerticalAlignment="Center"/>
                        </Border>
                    </Grid>
                </ListViewItem>
            </ListView>
        </StackPanel>
        <!--#endregion 左側好友列表-->

        <!--#region 中間會話區-->
        <Grid Grid.Column="1" Background="#FFE4E4E4">
            <StackPanel Orientation="Horizontal" Height="100" VerticalAlignment="Top" Background="#FFE4E4E4">
                <StackPanel.Effect>
                    <DropShadowEffect BlurRadius="30" ShadowDepth="1"/>
                </StackPanel.Effect>
                <Border Width="10" Height="10" HorizontalAlignment="Right" Margin="15" Background="Green" CornerRadius="15" VerticalAlignment="Center"/>
                <TextBlock Text="Dotnet9.com" FontSize="28" VerticalAlignment="Center"/>
                <Button Style="{StaticResource MaterialDesignFloatingActionMiniButton}" Margin="15 15 10 15">
                    <materialDesign:PackIcon Kind="Call"/>
                </Button>
                <Button Style="{StaticResource MaterialDesignFloatingActionMiniButton}" Margin="15 15 10 15">
                    <materialDesign:PackIcon Kind="VideoCall"/>
                </Button>
            </StackPanel>
            <StackPanel Margin="0 100" VerticalAlignment="Bottom">
                <local:UserControlMessageReceived HorizontalAlignment="Left"/>
                <local:UserControlMessageSent HorizontalAlignment="Right"/>
            </StackPanel>
            <Border Background="#FFAFE6B2" VerticalAlignment="Bottom">
                <Grid Margin="0 10">
                    <Grid.ColumnDefinitions>
                        <ColumnDefinition Width="*"/>
                        <ColumnDefinition Width="70"/>
                        <ColumnDefinition Width="70"/>
                        <ColumnDefinition Width="70"/>
                    </Grid.ColumnDefinitions>
                    <TextBox Grid.Column="0" MaxHeight="80" TextWrapping="Wrap" Margin="5" AcceptsReturn="True" VerticalScrollBarVisibility="Auto"/>
                    <Button Grid.Column="3" VerticalAlignment="Bottom" Style="{StaticResource MaterialDesignFloatingActionMiniButton}">
                        <materialDesign:PackIcon Kind="Send"/>
                    </Button>
                    <Button Grid.Column="2" Background="{x:Null}" VerticalAlignment="Bottom" Style="{StaticResource MaterialDesignFloatingActionMiniButton}">
                        <materialDesign:PackIcon Kind="Attachment" Foreground="{StaticResource PrimaryHueDarkBrush}"/>
                    </Button>
                    <Button Background="{x:Null}" Grid.Column="1" VerticalAlignment="Bottom" Style="{StaticResource MaterialDesignFloatingActionMiniButton}">
                        <materialDesign:PackIcon Kind="Smiley" Foreground="{StaticResource PrimaryHueDarkBrush}"/>
                    </Button>
                </Grid>
            </Border>
        </Grid>
        <!--#endregion 中間會話區-->

        <!--#region 右側參與會話的聯繫人信息-->
        <StackPanel Grid.Column="2" Background="White">
            <Button HorizontalAlignment="Right" Margin="10" Style="{StaticResource MaterialDesignFlatButton}" Click="Close_Click">
                <materialDesign:PackIcon Kind="Close"/>
            </Button>

            <Border Width="150" Height="150" CornerRadius="80" BorderThickness="1" BorderBrush="Gray">
                <Border.Background>
                    <ImageBrush ImageSource="https://img.dotnet9.com/logo.png"/>
                </Border.Background>
            </Border>

            <TextBlock Text="Dotnet9.com" HorizontalAlignment="Center" Margin="0 10 0 0" Foreground="Gray" FontSize="18" FontWeight="Bold"/>
            <TextBlock Text="Dotnet程序員" FontSize="13" Foreground="Gray" HorizontalAlignment="Center" Opacity="0.8"/>
            <TextBlock Text="一個熱衷於互聯網分享精神的程序員的網站！" FontSize="8" Foreground="Gray" HorizontalAlignment="Center" Opacity="0.8"/>

            <StackPanel Margin="20">
                <StackPanel Orientation="Horizontal" Margin="0 3">
                    <materialDesign:PackIcon Kind="Location" Foreground="Gray"/>
                    <TextBlock Text="成都" Margin="10 0" Foreground="Gray"/>
                </StackPanel>
                <StackPanel Orientation="Horizontal" Margin="0 3">
                    <materialDesign:PackIcon Kind="Cellphone" Foreground="Gray"/>
                    <TextBlock Text="186 2806 0000" Margin="10 0" Foreground="Gray"/>
                </StackPanel>
                <StackPanel Orientation="Horizontal" Margin="0 3">
                    <materialDesign:PackIcon Kind="Email" Foreground="Gray"/>
                    <TextBlock Text="[email protected]" Margin="10 0" Foreground="Gray"/>
                </StackPanel>
            </StackPanel>

            <TextBlock Text="視頻" Margin="20 0" Foreground="Gray"/>
            <StackPanel Orientation="Horizontal" Margin="20 0">
                <Border Width="50" Height="50" CornerRadius="30" Margin="5">
                    <Border.Background>
                        <ImageBrush ImageSource="https://img.dotnet9.com/logo.png"/>
                    </Border.Background>
                </Border>
                <Border Width="50" Height="50" CornerRadius="30" Margin="5">
                    <Border.Background>
                        <ImageBrush ImageSource="https://img.dotnet9.com/logo.png"/>
                    </Border.Background>
                </Border>
                <Border Width="50" Height="50" CornerRadius="30" Margin="5">
                    <Border.Background>
                        <ImageBrush ImageSource="https://img.dotnet9.com/logo.png"/>
                    </Border.Background>
                </Border>
            </StackPanel>
        </StackPanel>
        <!--#endregion 右側參與會話的聯繫人信息-->
    </Grid>
</Window>

2.2.3 窗體部分事件處理

後臺代碼

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

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

2.2.4 新增兩個用戶控件

用於展示接收的會話和發送的會話，真實的項目可以做成一個，做成模板。

接收的會話用戶控件：

<UserControl x:Class="Chat.UserControlMessageReceived"
             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" 
             xmlns:local="clr-namespace:Chat"
             mc:Ignorable="d" 
             d:DesignHeight="450" d:DesignWidth="800">
    <Grid>
        <Border Background="{StaticResource PrimaryHueDarkBrush}" CornerRadius="15 15 15 0" Margin="10 12">
            <TextBlock Margin="15" TextWrapping="Wrap" 
                       Text="你好，怎麼聯繫你？" Foreground="White"/>
        </Border>
        <TextBlock Text="星期四下午5:45" HorizontalAlignment="Right" VerticalAlignment="Bottom" FontSize="10" Margin="10 -2"/>
    </Grid>
</UserControl>

發送的會話用戶控件：

<UserControl x:Class="Chat.UserControlMessageSent"
             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" 
             xmlns:local="clr-namespace:Chat"
             mc:Ignorable="d" 
             d:DesignHeight="450" d:DesignWidth="800">
    <Grid>
        <Border Background="Gray" CornerRadius="15 15 0 15" Margin="10 12">
            <TextBlock Margin="15" TextWrapping="Wrap" Text="微信公衆號：Dotnet9，網站：https://dotnet9.com" Foreground="White"/>
        </Border>
        <TextBlock Text="星期四下午5:55" HorizontalAlignment="Right" VerticalAlignment="Bottom" FontSize="10" Margin="10 -2"/>
    </Grid>
</UserControl>

3.參考

學習視頻：

最終源碼：本文代碼幾乎和源碼一致，只是文中部分英文換成中文，本地圖片換成站長網站Logo外鏈，方便演示。

點擊右側下載源碼：Chat

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C# WPF聊天界面（3/3）

C# WPF聊天界面（3/3）

1.本文背景

2.代碼實現

2.1 引入MD控件樣式文件

2.2 界面佈局

2.2.3 窗體部分事件處理

2.2.4 新增兩個用戶控件

3.參考

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