I'm pretty new to MAUI, and i'm working on a simple CRUD-App to get into it. Now I have all the functions implementet, but now when I linked the AddUpdateObject() function to the submit button, it says that this function doesn't exist

This is my XAML:

    <StackLayout Margin="10" Spacing="20">
        <VerticalStackLayout Margin="10">
           <Label Text="Name" FontSize="16"/>
           <Entry Text="{Binding Name}" Placeholder="Name"/>
           <BoxView HeightRequest="0.8" Color="Gray"/>
        </VerticalStackLayout>

        <Button Text="Save" Command="{Binding AddUpdateObject}" />
     </StackLayout>

This is my Code-Behind:

using project.ViewModels;
namespace project.Views;

public partial class AddObjectAlbumDetail : ContentPage
{
    public AddUpdateAlbumDetail(AddUpdateObjectDetailViewModel viewModel)
    {
        this.BindingContext = viewModel;    
        InitializeComponent();
    }
}

And this is my AddUpdateObject() function in AddUpdateObjectDetailViewModel:

[ObservableProperty]
private string _name;


[ICommand]
        public async void AddUpdateObject()
        {
            var response = await _objectService.AddObject(new Models.TestModel
            {
                Name = Name,
                //ReleaseDate=Date,
            }) ;

            if(response > 0)
            {
                await Shell.Current.DisplayAlert("Created", "Object Created!", "OK");
            }
            else
            {
                await Shell.Current.DisplayAlert("Not Created", "Something went wrong while creating", "OK");

            }
        }

I'm sure the model is right since it only contains 1 attribute (string) and an auto incrementing id.

Thanks in advance

CodePudding user response：

1. The [ICommand] is [RelayCommand] now.

2. The InitializeComponent is called first.

3. The command is bound by {Binding AddUpdateObjectCommand} not AddUpdateObject.