CODEWITHSUNDEEP
xamarin.formsdata-binding
Sercan Samet Savran
Sercan Samet Savran

Reputation: 945

Trying to pass data to View (contains ListView) and set it as content

I have a List of strings in my main page, which I want to pass to another view. The attribute, to whom I writing to has a binding. Essentially it's the ItemSource of the ListView.

I tried additionally to List, both string[] and ObservableCollection as data storage for Projects, since the documentation recommends to use it.

Trying to use the -element from MyView.xaml in MainPage.xaml works like charm.

MainPage.xaml:

Content = new MyView { Projects = MyProjects };

MyView.xaml.cs:

public partial class MyView : ContentView
{
    private List<string> _projects;
    public List<string> Projects
    {
        get => _projects; 
        set
        {
            _projects = value;
            OnPropertyChanged(nameof(Projects));
        }
    }
    //public string[] Test = new string[] { "Test", "Hallo", "Welt" };
    public MyView ()
    {
        InitializeComponent();
    }
}

MyView.xaml:

<StackLayout>
        <ListView BackgroundColor="Red" x:Name="p_lstView" RowHeight="160" SeparatorColor="DodgerBlue" ItemsSource="{Binding Projects}">
            <ListView.ItemTemplate>
                <DataTemplate>
                    <ViewCell>
                    <Label Text="{Binding}"></Label>

                    </ViewCell>
                </DataTemplate>
            </ListView.ItemTemplate>

        </ListView>
</StackLayout>

Upvotes: 0

Views: 106

Answers (2)

DTeuchert
DTeuchert

Reputation: 523

You have some issues with the BindingContext on the ListView.ItemSource. The current context is on the MainPage.

You need to change: 

<ListView BackgroundColor="Red" x:Name="p_lstView" RowHeight="160" SeparatorColor="DodgerBlue" ItemsSource="{Binding Content.Projects}">

Alternative, you can set the BindingContext in the MyView constrctor.

Upvotes: 1

nevermore
nevermore

Reputation: 15816

You should set the BindingContext then the binding will work:

public MyView()
{
    InitializeComponent();

    BindingContext = this;
}

Upvotes: 1

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