WPF ComboBox Binding to ObservableCollection

I'm new to WPF And I have a question. I have the Organization module: ``` class Organization : ObservableObject { public string OrganizationName { get; set; } } ``` I have the ViewModel of the Organization: ``` class OrganizationViewModel : ObservableObject { int _count = 0; public OrganizationViewModel() { Organization = new Organization {OrganizationName = "New Organization"}; } public Organization Organization { get; set; } public string OrganizationName { get { return Organization.OrganizationName; } set { if(Organization.OrganizationName != value) { Organization.OrganizationName = value; RaisePropertyChanged("OrganizationName"); } } } ``` And I have the ViewModel of all the Organizations: ``` class AllOrganizationsViewModel { private ObservableCollection<OrganizationViewModel> m_organizations = new ObservableCollection<OrganizationViewModel>(); public ObservableCollection<OrganizationViewModel> Organizations { get { return m_organizations; } set { m_organizations = value; } } public AllOrganizationsViewModel() { for(int i = 0; i < 3; ++i) { m_organizations.Add(new OrganizationViewModel()); } } void AddOrganizationNameExecute() { m_organizations.Add(new OrganizationViewModel()); } bool CanAddOrganizationNameExecute() { return true; } public ICommand AddOrganization{get{return new RelayCommand(AddOrganizationNameExecute, CanAddOrganizationNameExecute);}} } ``` And this is the MainWindow.xaml: ``` <Window x:Class="DataIntegrityChecker.MainWindow" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:local="clr-namespace:DataIntegrityChecker.ViewModels" Title="MainWindow" Height="350" Width="525"> <Window.DataContext> <local:AllOrganizationsViewModel /> </Window.DataContext> <Grid> <Grid.RowDefinitions> <RowDefinition Height="Auto" /> <RowDefinition Height="285*" /> </Grid.RowDefinitions> <Grid.ColumnDefinitions> <ColumnDefinition Width="156" /> <ColumnDefinition Width="347*" /> </Grid.ColumnDefinitions> <Label Content="Organization: " Margin="0,0,44,0" /> <Button Grid.Row="1" Name="UpdateOrganizations" Content="Update Organization Name" Command="{Binding AddOrganization}" Margin="0,0,0,262" HorizontalAlignment="Left" Width="156" /> <ComboBox Grid.Column="1" Grid.Row="1" Height="23" HorizontalAlignment="Left" Name="comboBox1" VerticalAlignment="Top" Width="155" ItemsSource="{Binding Organizations}" /> </Grid> </Window> ``` Now, what I get in the ComboBox items is the name of the class OrganizationViewModel but what I need is the OrganizationName string. It seems to me that I have some binding to OrganizationName that's missing but I can't figure out where to add if (if that's the issue). I assume I can make a collection of strings with the names of the organizations I need. But in the future I will need more properties in the Organization Class so that's the way I need it to work. I will appreciate any help