Question

我有一页的标识,首先出现在我的MAUI仪器运行之时。在登录后,I navigate to the dash板 page but myuser can press the Backutton to re to thelogin page.

是否在把 log印页打到仪表板页之后,可以关闭标识页,从而把仪表板的页子变成根基?

在安伯,我将去做仪表板的活动,并在标识页上执行“定点”。

总之,我的问题有多种形式:

Is there a way to replace one page with another?
Is there a way to make a page become the new root page?
Is there a way to remove a root page from the navigation stack?

Answer 1

你可以援引以下法典:

• 创建MAUI项目,然后将LoginPage和NewPage1增到根名录,并在LoginViewModel内部添加观点模块:

伐木页: 1

<ContentPage xmlns="http://schemas.microsoft.com/dotnet/2021/maui"
             xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
             x:Class="MauiApp5.LoginPage"
             Title="LoginPage">

    <VerticalStackLayout>
        <Label
            Text="Welcome to .NET MAUI!"
            VerticalOptions="Center"
            HorizontalOptions="Center" />
        <Button Text="Login"  
                Command="{Binding LoginCommand}"/>
    </VerticalStackLayout>
</ContentPage>

public partial class LoginPage : ContentPage
{
    public LoginPage()
    {
        InitializeComponent();
        this.BindingContext = new LoginViewModel();
    }
}

LoginViewModel:

public class LoginViewModel
{
    public Command LoginCommand { get; }

    public LoginViewModel () { LoginCommand = new Command (OnLoginClicked); }

    private async void OnLoginClicked (object obj)
    {
         await Shell.Current.GoToAsync ($"//{nameof(MainPage)}");
    }
}

为返回LoginPage而增加一个县:

<ContentPage xmlns="http://schemas.microsoft.com/dotnet/2021/maui"
             xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
             x:Class="MauiApp5.MainPage">

   <ScrollView>
        <VerticalStackLayout
            Spacing="25"
            Padding="30,0"
            VerticalOptions="Center">

           .....

           <Button Text="LoginPage" Clicked="Button_Clicked"/>

       </VerticalStackLayout>
    </ScrollView>

</ContentPage>

public partial class MainPage: ContentPage 
{
  int count = 0;

  public MainPage() 
  {
    InitializeComponent();
  }
  
  ....
  
  private void Button_Clicked(object sender, EventArgs e) 
  {
    Shell.Current.GoToAsync($"//{nameof(LoginPage)}");
  }
}

AppShell.xaml:

<Shell
    x:Class="MauiApp5.AppShell"
    xmlns="http://schemas.microsoft.com/dotnet/2021/maui"
    xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
    xmlns:local="clr-namespace:MauiApp5"
    Shell.FlyoutBehavior="Disabled">


   <ShellContent Title="LoginPage" Route="LoginPage" ContentTemplate="{DataTemplate local:LoginPage}" Shell.TabBarIsVisible="False"/>
    
    <FlyoutItem >
        <ShellContent Title="Home" Route="MainPage" ContentTemplate="{DataTemplate local:MainPage}" />
        <ShellContent Title="NewPage1" Route="NewPage1" ContentTemplate="{DataTemplate local:NewPage1}" />
    </FlyoutItem>

</Shell>

这里是 effect 。

友情链接