【C#】WPF窗体在同一个位置实现不同页面切换

关键代码看主界面代码即可

创建View文件夹，并创建用户控件

用户控件代码

UserControl1.xaml

<UserControl x:Class="WpfApp15.View.UserControl1"
             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:WpfApp15.View"
             mc:Ignorable="d" 
             d:DesignHeight="450" d:DesignWidth="800">
    <Grid Background="AliceBlue">
        <TextBlock Text="我是用户控件1" VerticalAlignment="Center" HorizontalAlignment="Center" FontSize="30" FontWeight="Bold"></TextBlock>
    </Grid>
</UserControl>

UserControl2.xaml

<UserControl x:Class="WpfApp15.View.UserControl1"
             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:WpfApp15.View"
             mc:Ignorable="d" 
             d:DesignHeight="450" d:DesignWidth="800">
    <Grid Background="AliceBlue">
        <TextBlock Text="我是用户控件2" VerticalAlignment="Center" HorizontalAlignment="Center" FontSize="30" FontWeight="Bold"></TextBlock>
    </Grid>
</UserControl>

UserControl3.xaml

<UserControl x:Class="WpfApp15.View.UserControl1"
             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:WpfApp15.View"
             mc:Ignorable="d" 
             d:DesignHeight="450" d:DesignWidth="800">
    <Grid Background="AliceBlue">
        <TextBlock Text="我是用户控件3" VerticalAlignment="Center" HorizontalAlignment="Center" FontSize="30" FontWeight="Bold"></TextBlock>
    </Grid>
</UserControl>

主界面代码

MainWindow.xaml

<Window x:Class="WpfApp15.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:WpfApp15"
        mc:Ignorable="d"
        Title="MainWindow" Height="450" Width="800">
    <Grid>
        <Grid.ColumnDefinitions>
            <ColumnDefinition Width="227*"/>
            <ColumnDefinition Width="573*"/>
        </Grid.ColumnDefinitions>
        <StackPanel Grid.Column="0">
            <Button Content="切换用户控件1" Click="Button_Click"></Button>
            <Button Content="切换用户控件2" Click="Button_Click_1"></Button>
            <Button Content="切换用户控件3" Click="Button_Click_2"></Button>
        </StackPanel>
        <ContentControl Grid.Column="1" x:Name="ContentControl1"></ContentControl>
    </Grid>
</Window>

MainWindow.xaml.cs

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;
using WpfApp15.View;

namespace WpfApp15
{
    /// <summary>
    /// Interaction logic for MainWindow.xaml
    /// </summary>
    public partial class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent();
        }

        private void Button_Click(object sender, RoutedEventArgs e)
        {
            UserControl1 userControl1 = new UserControl1();
            ContentControl1.Content = new Frame() 
            { 
                Content = userControl1
            };
        }

        private void Button_Click_1(object sender, RoutedEventArgs e)
        {
            UserControl2 userControl2 = new UserControl2();
            ContentControl1.Content = new Frame()
            {
                Content = userControl2
            };
        }

        private void Button_Click_2(object sender, RoutedEventArgs e)
        {
            UserControl3 userControl3 = new UserControl3();
            ContentControl1.Content = new Frame()
            {
                Content = userControl3
            };
        }
    }
}