Check if the ContentPage is a MainPage

Jassim Al Rahma 1,526 Reputation points
2023-03-29T17:47:07.24+00:00

Hi,

In .NET MAUI, how can I check the current page is a Mainpage?

Thanks,

Jassim

.NET MAUI
.NET MAUI
A Microsoft open-source framework for building native device applications spanning mobile, tablet, and desktop.
2,972 questions
C#
C#
An object-oriented and type-safe programming language that has its roots in the C family of languages and includes support for component-oriented programming.
10,376 questions
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Accepted answer
  1. Yonglun Liu (Shanghai Wicresoft Co,.Ltd.) 36,951 Reputation points Microsoft Vendor
    2023-03-30T03:04:59.62+00:00

    Hello,

    You could set a Title on your page and use it to determine if the current page is MainPage:

    // in xaml
    <ContentPage ...
                 x:Class="MauiApp14.NewPage1"
                 Title="NewPage1">
    // in c#
    var name = AppShell.Current.CurrentPage.Title;
    if (name.Equals("MainPage"))
    {
    	Console.WriteLine("MainPage");
    }else
    {
    	Console.WriteLine(name);
    }
    

    Update:

    This problem occurs because you put var name = AppShell.Current.CurrentPage.ClassId; is placed in the page's constructor, and the CurrentPage has not yet been assigned, so this error is caused.

    For any way to get page properties, a more recommended way is to put them in the page's OnAppearing method.

    protected override void OnAppearing()
        {
            base.OnAppearing();
            var name = AppShell.Current.CurrentPage.ClassId;
            if ...
        }
    

    Best Regards,

    Alec Liu.


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