关于WPF的主窗口和page调用问题

[番茄不剃头]

点击按钮1之后，跳到一个page上，我想通过在page上添加一个button，点击之后回到mainwindow，可是回去之后再点击按钮1就没有任何反应了。我要怎么做才可以再次点击按钮1，还能调出page？？？刚学c#一会，恳请前辈们不吝赐教！
这是xaml的代码

<Window
        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" mc:Ignorable="d" x:Name="mw" x:Class="CnGTest1.MainWindow"
        Title="test"  Height="500" Width="800" WindowStartupLocation="CenterScreen">
    <Grid x:Name="gr1"   Background="#FFF6F6F6">
        <Button x:Name="btn_flfj" Content="1" FontSize="30"   HorizontalAlignment="Left" Margin="39,293,0,0" VerticalAlignment="Top" Width="160" Height="80" FontWeight="Bold" Click="btn1_Click"/>
        <Button x:Name="btn_ccgl" Content="2" FontSize="30"   Click="btn_ccgl_Click" HorizontalAlignment="Left" Margin="321,293,0,0" VerticalAlignment="Top" Width="160" Height="80" FontWeight="Bold"/>
        <Button x:Name="btn_xxcx" Content="3" FontSize="30"   Click="btn_xxcx_Click" HorizontalAlignment="Left" Margin="593,293,0,0" VerticalAlignment="Top" Width="160" Height="80" FontWeight="Bold"/>
        <ContentControl  x:Name="DetailPage" d:IsHidden="True"/>
        <Frame x:Name="frmMain" d:IsHidden="True" />

    </Grid>
</Window>

这是mainwindow的代码

namespace CnGTest1
{
    /// <summary>
    /// MainWindow.xaml 的交互逻辑
    /// </summary>
    public partial class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent();
        }
      
        private void btn1_Click(object sender, RoutedEventArgs e)
        {
            //Page p1 = new Page1();
            //DetailPage.Content = new Frame()
            //{
            //    Content = p1
            //};   
            
     
            Page1 p1 = new Page1();
            if (p1.Visibility == System .Windows.Visibility.Collapsed)
            {
                p1.Visibility = System.Windows.Visibility.Visible;
                this.frmMain.Content = new Frame()
                {
                    Content = p1
                };
            }
            else
            {
                this.frmMain.Navigate(new Uri("BasicFunc/ClassifyandGrading.xaml", UriKind.Relative));
            }
        }


        private void btn_ccgl_Click(object sender, RoutedEventArgs e)
        {
            this.frmMain.Navigate(new Uri("BasicFunc/InventoryManage.xaml", UriKind.Relative)); 
        }

        private void btn_xxcx_Click(object sender, RoutedEventArgs e)
        {
            this.frmMain.Navigate(new Uri("BasicFunc/InfoSearch.xaml", UriKind.Relative)); 
        }


    }
}

这是page的代码
namespace CnGTest1
{
/// <summary>
/// Page1.xaml 的交互逻辑
/// </summary>
public partial class Page1 : Page
{
public Page1()
{
InitializeComponent();
}

private void btn2_Click(object sender, RoutedEventArgs e)
{
this.Visibility = System.Windows.Visibility.Collapsed;
}

}

[OrdinaryCoder]

看你的意思是想隐藏page1 之后再显示同一个page 但是 Page1 p1 = new Page1();这块是new了一个新的

[qq14923349]

goback() gofaword()
这几个方法忘了

[郑州高新区WPF小王子]

每次都会创建一个p1，必须保证只有一个p1，声明在事件外部，你的this.Visibility = System.Windows.Visibility.Collapsed; 才会有效。 再次打开切换Visibility的值即可。