C#•8mo ago

✅ async .NET MAUI binding

Hello, on Xamarin channel I found this code how to update UI with threads and async stuff. https://youtu.be/-LY4ATA8Bgw?si=cRmPMFNjL9-zTxui&t=1212 But in .NET MAUI it says

Warning    CS0618    'Device.BeginInvokeOnMainThread(Action)' is obsolete: 'Use BindableObject.Dispatcher.Dispatch() instead'

. So how can I bind some async data from my API by using it? Leave an example please 😄

using CommunityToolkit.Mvvm.ComponentModel;
using MRSUMobile.MVVM.Model;
using MRSUMobile.Services;

namespace MRSUMobile.MVVM.ViewModel
{
    public partial class AppShellViewModel : ObservableObject
    {
        IMrsuApiService mrsuApi;

        [ObservableProperty]
        User user = new User();

        public AppShellViewModel(IMrsuApiService mrsuApiService)
        {
            mrsuApi = mrsuApiService;

            // async binding of user ?
            // user = await mrsuApi.GetMyProfile();
        }
    }
}

using CommunityToolkit.Mvvm.ComponentModel;
using MRSUMobile.MVVM.Model;
using MRSUMobile.Services;

namespace MRSUMobile.MVVM.ViewModel
{
    public partial class AppShellViewModel : ObservableObject
    {
        IMrsuApiService mrsuApi;

        [ObservableProperty]
        User user = new User();

        public AppShellViewModel(IMrsuApiService mrsuApiService)
        {
            mrsuApi = mrsuApiService;

            // async binding of user ?
            // user = await mrsuApi.GetMyProfile();
        }
    }
}

1 Reply

kurumi•8mo ago

alright, after some expreriments I found this solution

public AppShellViewModel(IMrsuApiService mrsuApiService)
{
    mrsuApi = mrsuApiService;

    Application.Current.Dispatcher.DispatchAsync(async () =>
    {
        user = await mrsuApi.GetMyProfile();
    });
}

public AppShellViewModel(IMrsuApiService mrsuApiService)
{
    mrsuApi = mrsuApiService;

    Application.Current.Dispatcher.DispatchAsync(async () =>
    {
        user = await mrsuApi.GetMyProfile();
    });
}

But probably this is not a good way hm... This code only sets property but UI is still not updated The problem was with user = await mrsuApi.GetMyProfile(); it should be User = ...

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✅ async .NET MAUI binding