WPF

public sealed class ApplicationViewEventArgs : EventArgs
{
    private Enums.ApplicationView _applicationView;

    public Enums.ApplicationView ApplicationViewStatus
    {
        get
        {
            return _applicationView;
        }
    }

    public ApplicationViewEventArgs(Enums.ApplicationView ApplicationViewStatus)
    {
        _applicationView = ApplicationViewStatus;
    }
}

/// <summary>
/// Interaction logic for Navigator.xaml
/// </summary>
public partial class Navigator : UserControl
{
    public delegate void ApplicationViewChanged(object sender, ApplicationViewEventArgs e);

    public event ApplicationViewChanged ApplicationViewStatusChanged;

    public Navigator()
    {
        InitializeComponent();
    }

    private void btnBrowseView_Click(object sender, RoutedEventArgs e)
    {
        if (ApplicationViewStatusChanged != null)

            ApplicationViewStatusChanged(this, new ApplicationViewEventArgs(Enums.ApplicationView.BrowserView));

    }

    private void btnDatabaseView_Click(object sender, RoutedEventArgs e)
    {
        if (ApplicationViewStatusChanged != null)

            ApplicationViewStatusChanged(this, new ApplicationViewEventArgs(Enums.ApplicationView.DataBaseView));

    }
}

private void Navigator_ApplicationViewStatusChanged(object o, ApplicationViewEventArgs e)
{
    lyrBrowserView.Visibility = Visibility.Hidden;
    lyrDatabaseView.Visibility = Visibility.Hidden;

    switch (e.ApplicationViewStatus)
    {
        case Enums.ApplicationView.BrowserView:
            lyrBrowserView.Visibility = Visibility.Visible;
            break;
        case Enums.ApplicationView.DataBaseView:
            lyrDatabaseView.Visibility = Visibility.Visible;
            break;
    }
}

public static class Enums
{
    public enum ApplicationView
    {
        BrowserView = 0,
        DataBaseView = 1,
        ConfigurationView = 2
    }
}

Jammer

Going where everyone here has gone before!
My Blog

public sealed class ApplicationViewEventArgs : EventArgs
{
    private Enums.ApplicationView _applicationView;

    public Enums.ApplicationView ApplicationViewStatus
    {
        get
        {
            return _applicationView;
        }
    }

    public ApplicationViewEventArgs(Enums.ApplicationView ApplicationViewStatus) : base()
    {
        _applicationView = ApplicationViewStatus;
    }
}

Jammer

Going where everyone here has gone before!
My Blog

Jammer wrote:

this is obviously the whole deal but its always returning null

private void Navigator_ApplicationViewStatusChanged(object o, ApplicationViewEventArgs e)
{
    lyrBrowserView.Visibility = Visibility.Hidden;
    lyrDatabaseView.Visibility = Visibility.Hidden;

    switch (e.ApplicationViewStatus)
    {
        case Enums.ApplicationView.BrowserView:
            lyrBrowserView.Visibility = Visibility.Visible;
            break;
        case Enums.ApplicationView.DataBaseView:
            lyrDatabaseView.Visibility = Visibility.Visible;
            break;
    }
}

Jammer

Going where everyone here has gone before!
My Blog

Ed.Poore wrote:

Can the dreaded nullable combo-box be created in WPF.

Karl Shifflett wrote:

You can add the extra row in the data in your business layer or data layer

Karl Shifflett wrote:

extend the combobox to function like the ASP.NET dropdown control that has this built in

public static void NullableDataSource<T>(this ComboBox source, IList<T> binding) 
  where T : class, new()
{
  if (binding != null)
  {
    binding.Insert(0, "<Null>");
  }
  source.DataSource = binding;
}