My problem is this, I have a UC called profile that contains another UC called FollowImageControl.

In my Profile.xaml i declaretively bind a property of FollowImageControl called FollowerId to a CurrentUserId from Profile.xaml.cs. Problem is that I CurrentUserId is assigned in Profile.xaml.cs; the Profile.xaml code-behind.

This means that I do not initially get the FollowerId. I have these methods in the FollowImageControl.xaml.cs:

    public static readonly DependencyProperty _followUserId =
                    DependencyProperty.Register("FollowUserId", typeof(Guid), typeof(FollowImageControl), null);
    public Guid FollowUserId
    {
        get { return (Guid)GetValue(_followUserId); }
        set { SetValue(_followUserId, value); }
    }
    public FollowImageControl()
    {
        // Required to initialize variables
        InitializeComponent();
        LoggedInUserId = WebContext.Current.User.UserId;
        var ctx = new NotesDomainContext();
        if (ctx.IsFollowingUser(LoggedInUserId, FollowUserId).Value) SwitchToDelete.Begin();
    }


    private void AddImg_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
    {
        if (LoggedInUserId != FollowUserId)
        {
            var ctx = new NotesDomainContext();
            ctx.FollowUser(FollowUserId, LoggedInUserId);
            ctx.SubmitChanges();
        }
    }

THE WEIRD THING IS that when i insert breakpoints the FollowerUserId in FollowImageControl() is 0, but it has a value in AddImg_MouseLeftButtonDown, and there is no inbetween logic that sets the value of it. How is this???

Here's a little more code info:

This is my binding from profile.xaml

<internalCtrl:FollowImageControl FollowUserId="{Binding ElementName=ProfileCtrl, Path=CurrentUserId}" />

this is my constructor in profile.xaml.cs wherein the CurrentUserId is set public static readonly DependencyProperty _CurrentUserId =

DependencyProperty.Register("CurrentUserId", typeof(Guid), typeof(Profile), null);
        public Guid CurrentUserId 
        {
            get { return (Guid)GetValue(_CurrentUserId); }
            set { SetValue(_CurrentUserId, value); }
        }

public Profile(Guid UserId) {
            CurrentUserId = UserId;
            InitializeComponent();
            Loaded += new RoutedEventHandler(Profile_Loaded);
        }

I'm seriously dumbfound that one minute the FollowerId has no value, and the next it holds the right, without me having changed the value in the code-behind.