WPF ComboBox binding ItemsSource

Question

I\'m a beginner on WPF and trying to bind the Items of a ComboBox to an ObservableCollection

I used this code:

XAML

Answer 1

There are a few things wrong with your current implementation. As others have stated, your list is currently NULL, and the DataContext of the Window is not set.

Though, I would recommend (especially since you just started using WPF) is learning to do the binding the more 'correct' way, using MVVM.

See the simplified example below:

First, you want to set the DataContext of your Window. This will allow the XAML to 'see' the properties within your ViewModel.

/// 

/// Interaction logic for MainWindow.xaml
/// 
public partial class MainWindow : Window
{
    public MainWindow()
    {
        InitializeComponent();
        DataContext = new ViewModel();
    }
}

Next, simply set up a ViewModel class that will contain all of the Window's binding elements, such as:

public class ViewModel
{
    public ObservableCollection CmbContent { get; private set; }

    public ViewModel()
    {
        CmbContent = new ObservableCollection
        {
            "test 1", 
            "test 2"
        };
    }
}

Lastly, update your XAML so that the binding path matches the collection: