WPF仿Tabcontrol加载切换多个不同View

在同一块区域显示不同的视图内容，直接使用Tabcontrol，可能要重写TabItem的控件模板，最直接的方法通过按钮的切换，控制一个ContentControl的Content值，实现切换不同的视图View。以下是一个简单的实现demo。注：如果用Prism的框架实现，只要设置Region的区域块显示，会更简单一些，至少不用自己实现。

1、ViewA：

<UserControl x:Class="test.viewA"
             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:test"
             mc:Ignorable="d"
             d:DesignHeight="450" d:DesignWidth="800">
    <UserControl.Resources>
        <SolidColorBrush x:Key="TabControlNormalBorderBrush" Color="#8C8E94"/>
        <Style x:Key="TabControlStyle1" TargetType="{x:Type TabControl}">
            <Setter Property="Foreground" Value="{DynamicResource {x:Static SystemColors.ControlTextBrushKey}}"/>
            <Setter Property="Padding" Value="4,4,4,4"/>
            <Setter Property="BorderThickness" Value="1"/>
            <Setter Property="BorderBrush" Value="{StaticResource TabControlNormalBorderBrush}"/>
            <Setter Property="Background" Value="#F9F9F9"/>
            <Setter Property="HorizontalContentAlignment" Value="Center"/>
            <Setter Property="VerticalContentAlignment" Value="Center"/>
            <Setter Property="Template">
                <Setter.Value>
                    <ControlTemplate TargetType="{x:Type TabControl}">
                        <Grid ClipToBounds="true" SnapsToDevicePixels="true" KeyboardNavigation.TabNavigation="Local">
                            <Grid.ColumnDefinitions>
                                <ColumnDefinition x:Name="ColumnDefinition0"/>
                                <ColumnDefinition x:Name="ColumnDefinition1" Width="0"/>
                            </Grid.ColumnDefinitions>
                            <Grid.RowDefinitions>
                                <RowDefinition x:Name="RowDefinition0" Height="Auto"/>
                                <RowDefinition x:Name="RowDefinition1" Height="*"/>
                            </Grid.RowDefinitions>
                            <TabPanel x:Name="HeaderPanel" Grid.Column="0" IsItemsHost="true" Margin="2,2,2,0" Grid.Row="0" KeyboardNavigation.TabIndex="1" Panel.ZIndex="1"/>
                            <Border x:Name="ContentPanel" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}" Grid.Column="0" KeyboardNavigation.DirectionalNavigation="Contained" Grid.Row="1" KeyboardNavigation.TabIndex="2" KeyboardNavigation.TabNavigation="Local">
                                <ContentPresenter x:Name="PART_SelectedContentHost" ContentSource="SelectedContent" Margin="{TemplateBinding Padding}" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"/>
                            </Border>
                        </Grid>
                        <ControlTemplate.Triggers>
                            <Trigger Property="TabStripPlacement" Value="Bottom">
                                <Setter Property="Grid.Row" TargetName="HeaderPanel" Value="1"/>
                                <Setter Property="Grid.Row" TargetName="ContentPanel" Value="0"/>
                                <Setter Property="Height" TargetName="RowDefinition0" Value="*"/>
                                <Setter Property="Height" TargetName="RowDefinition1" Value="Auto"/>
                                <Setter Property="Margin" TargetName="HeaderPanel" Value="2,0,2,2"/>
                            </Trigger>
                            <Trigger Property="TabStripPlacement" Value="Left">
                                <Setter Property="Grid.Row" TargetName="HeaderPanel" Value="0"/>
                                <Setter Property="Grid.Row" TargetName="ContentPanel" Value="0"/>
                                <Setter Property="Grid.Column" TargetName="HeaderPanel" Value="0"/>
                                <Setter Property="Grid.Column" TargetName="ContentPanel" Value="1"/>
                                <Setter Property="Width" TargetName="ColumnDefinition0" Value="Auto"/>
                                <Setter Property="Width" TargetName="ColumnDefinition1" Value="*"/>
                                <Setter Property="Height" TargetName="RowDefinition0" Value="*"/>
                                <Setter Property="Height" TargetName="RowDefinition1" Value="0"/>
                                <Setter Property="Margin" TargetName="HeaderPanel" Value="2,2,0,2"/>
                            </Trigger>
                            <Trigger Property="TabStripPlacement" Value="Right">
                                <Setter Property="Grid.Row" TargetName="HeaderPanel" Value="0"/>
                                <Setter Property="Grid.Row" TargetName="ContentPanel" Value="0"/>
                                <Setter Property="Grid.Column" TargetName="HeaderPanel" Value="1"/>
                                <Setter Property="Grid.Column" TargetName="ContentPanel" Value="0"/>
                                <Setter Property="Width" TargetName="ColumnDefinition0" Value="*"/>
                                <Setter Property="Width" TargetName="ColumnDefinition1" Value="Auto"/>
                                <Setter Property="Height" TargetName="RowDefinition0" Value="*"/>
                                <Setter Property="Height" TargetName="RowDefinition1" Value="0"/>
                                <Setter Property="Margin" TargetName="HeaderPanel" Value="0,2,2,2"/>
                            </Trigger>
                            <Trigger Property="IsEnabled" Value="false">
                                <Setter Property="Foreground" Value="{DynamicResource {x:Static SystemColors.GrayTextBrushKey}}"/>
                            </Trigger>
                        </ControlTemplate.Triggers>
                    </ControlTemplate>
                </Setter.Value>
            </Setter>
        </Style>
    </UserControl.Resources>
    <UserControl.DataContext>
        <local:viewAModel/>
    </UserControl.DataContext>
    <Grid>
        <TextBlock Text="{Binding Text}" VerticalAlignment="Center" HorizontalAlignment="Center" FontSize="50"/>
    </Grid>
</UserControl>

ViewAViewModel：

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

namespace test
{
   public class viewAModel:INotifyPropertyChanged
    {
        public viewAModel()
        {
            Text = "A";
        }

        public event PropertyChangedEventHandler PropertyChanged;

        private void Change(string propertyName)
        {
            PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));
        }

        private string text;

        public string Text
        {
            get { return text; }
            set
            {
                text = value;
                Change("Text");
            }
        }
    }
}

ViewB：

<UserControl x:Class="test.viewB"
             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:test"

             mc:Ignorable="d"
             d:DesignHeight="450" d:DesignWidth="800">
    <UserControl.DataContext>
        <local:viewBModel/>
    </UserControl.DataContext>
    <Grid>
        <TextBlock Text="{Binding Text}" VerticalAlignment="Center" HorizontalAlignment="Center" FontSize="50"/>
    </Grid>
</UserControl>

ViewBViewModel：

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

namespace test
{
  public  class viewBModel: INotifyPropertyChanged
    {
        public viewBModel()
        {
            Text = "ViewB";
        }
        public event PropertyChangedEventHandler PropertyChanged;

        private void Change(string propertyName)
        {
            PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));
        }

        private string text;

        public string Text
        {
            get { return text; }
            set
            {
                text = value;
                Change("Text");
            }
        }
    }
}

在MainWindow切换ViewA和ViewB

<Window x:Class="test.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:test"
        mc:Ignorable="d"
        Title="MainWindow" Height="450" Width="800">
    <Grid>
        <Grid.ColumnDefinitions>
            <ColumnDefinition/>
            <ColumnDefinition/>
        </Grid.ColumnDefinitions>

        <StackPanel>
            <Button Height="100" Width="100" Content="A" x:Name="A" Click="A_Click"/>
            <Button Height="100" Width="100" Content="B" x:Name="B" Click="B_Click"/>
        </StackPanel>

        <ContentControl x:Name="content" Grid.Column="1">
            <local:viewA/>
        </ContentControl>

    </Grid>
</Window>

MainWindow.cs:   在初始化的时候，通过一个Dictionary，把要展示的View先加载出来，存到字典上，确保只Load一次view，在点击按钮切换ContentControl时，从字典中获取，减少每一次都new一个VIew，造成内存的泄露

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.Navigation;
using System.Windows.Shapes;

namespace test
{
    /// <summary>
    /// MainWindow.xaml 的交互逻辑
    /// </summary>
    public partial class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent();

            FramworkElements["A"]=new viewA();
            FramworkElements["B"]=new viewB();
        }

        private Dictionary<string, FrameworkElement> FramworkElements = new Dictionary<string, FrameworkElement>();

        private void A_Click(object sender, RoutedEventArgs e)
        {
            content.Content = FramworkElements["A"];
        }

        private void B_Click(object sender, RoutedEventArgs e)
        {
            content.Content = FramworkElements["B"];
        }
    }
}

展示的效果：

点击A按钮，切换A视图

点击B按钮，切换B视图：