Getting the last day of the month...

This isn't complicated C# - but somehow I managed to mess it up... Here's the correct version!

        var theDate = DateTime.UtcNow;

        var daysInMonth = DateTime.DaysInMonth(theDate.Year, theDate.Month);

        var daysLeftThisMonth = daysInMonth - theDate.Day;

        var endOfCurrentMonth = theDate.AddDays(daysLeftThisMonth);

#DDDHack - broken files...

If you want to enter DDD9 Hack, then the RSS Reader project doesn't build because of differences between the CTP and the RTM.

To get it working:

1.  Delete the old references to Microsoft.Phone.Controls.WebBrowser and friend

2. Add references to the new Microsoft.Phone.* assemblies

3.  Add some capabilities to the contents of Properties/WMAssembly.xml:

    <Capabilities>

      <Capability Name="ID_CAP_GAMERSERVICES" />

      <Capability Name="ID_CAP_IDENTITY_DEVICE" />

      <Capability Name="ID_CAP_IDENTITY_USER" />

      <Capability Name="ID_CAP_LOCATION" />

      <Capability Name="ID_CAP_MEDIALIB" />

      <Capability Name="ID_CAP_MICROPHONE" />

      <Capability Name="ID_CAP_NETWORKING" />

      <Capability Name="ID_CAP_PHONEDIALER" />

      <Capability Name="ID_CAP_PUSH_NOTIFICATION" />

      <Capability Name="ID_CAP_SENSORS" />

      <Capability Name="ID_CAP_WEBBROWSERCOMPONENT" />

    </Capabilities>

4. In that same file replace Default Task with  <DefaultTask Name="_default" NavigationPage="MainPage.xaml" />

5. In that same file replace RuntimeType="SilverLight"  with RuntimeType="Silverlight" 

6. In the .xaml files, replace the xmlns:phoneNavigation import with xmlns:phoneNavigation="clr-namespace:Microsoft.Phone.Controls;assembly=Microsoft.Phone"

7. In the xaml files, replace the mpc:ListViewItem with a TextBlock - e.g. <TextBlock Text="{Binding Title}"  /> and  <TextBlock Text="{Binding FeedName}" />

8. In the xaml files, replace the xmlns:shell import with xmlns:shell="clr-namespace:Microsoft.Phone.Shell;assembly=Microsoft.Phone"     

9. In the app.xaml file, remove the style <Style x:Key="PhoneListBoxItemLayout" TargetType="mpc:ListViewItem"> starting on line 238

That's it....

My attempt at fixes are at http://slodge.com/dddhack/fixes.zip - just apply these over the top of the base project.

Interesting post on the number of public deployments on Azure

Very interesting numbers

http://www.simple-talk.com/community/blogs/robbiet/archive/2011/01/18/98943.aspx

Although take all numbers with a "pinch of salt" - these are only "guestimates"

AutoLoading more content when you scroll to the bottom of a ListBox in WP7 (Windows Phone 7)

I've just implemented this for Overflow7.

The approach I took was similar to http://blog.slimcode.com/2010/09/11/detect-when-a-listbox-scrolls-to-its-end-wp7/

However, instead of using a Style I did the hook up in code.

Basically derived my parent UserControl from:

     public class BaseExtendedListUserControl : UserControl
 {
     DependencyProperty ListVerticalOffsetProperty = DependencyProperty.Register(
       "ListVerticalOffset",
       typeof(double),
       typeof(BaseExtendedListUserControl),
       new PropertyMetadata(new PropertyChangedCallback(OnListVerticalOffsetChanged)));
 
    private ScrollViewer _listScrollViewer;
 
    protected void EnsureBoundToScrollViewer()
     {
         if (_listScrollViewer != null)
             return;
 
        var elements = VisualTreeHelper.FindElementsInHostCoordinates(new Rect(0,0,this.Width, this.Height), this);
 
        _listScrollViewer = elements.Where(x => x is ScrollViewer).FirstOrDefault() as ScrollViewer;
 
        if (_listScrollViewer == null)
             return;
 
        Binding binding = new Binding();
         binding.Source = _listScrollViewer;
         binding.Path = new PropertyPath("VerticalOffset");
         binding.Mode = BindingMode.OneWay;
         this.SetBinding(ListVerticalOffsetProperty, binding);
     }
 
    public double ListVerticalOffset
     {
         get { return (double)this.GetValue(ListVerticalOffsetProperty); }
         set { this.SetValue(ListVerticalOffsetProperty, value); }
     }
 
    private static void OnListVerticalOffsetChanged(DependencyObject obj, DependencyPropertyChangedEventArgs e)
     {
         BaseExtendedListUserControl control = obj as BaseExtendedListUserControl;
         control.OnListVerticalOffsetChanged();
     }
 
    private void OnListVerticalOffsetChanged()
     {
         OnListVerticalOffsetChanged(_listScrollViewer);
 
    }
 
    protected virtual void OnListVerticalOffsetChanged(ScrollViewer s)
     {
         // do nothing
     }
 }
 

this then meant that in the user control itself I could just use:

         protected override void OnListVerticalOffsetChanged(ScrollViewer viewer)
     {
         // Trigger when at the end of the viewport
         if (viewer.VerticalOffset >= viewer.ScrollableHeight)
         {
                 // actually do the load here!
         }
     }
 
    private void ListBox1_ManipulationCompleted(object sender, ManipulationCompletedEventArgs e)
     {
         EnsureBoundToScrollViewer();
     }
 

The "hacky" thing here was that I had to use ListBox1_ManipulationCompleted and VisualTreeHelper to find my ScrollViewer - I'm sure there are better ways...