datacontext

I'm learning WPF, MVVM Light and the ViewModelLocator pattern and running into difficulties with my main window's data context. public class ViewModelLocator { public ViewModelLocator() { var mainModel = new MainModel(); Main = new MainViewModel(mainModel); } public MainViewModel Main { get; private set; } public static ViewModelLocator Instance { get { return Application.Current.Resources["Locator"] as ViewModelLocator; } } } and in my app.xaml: <Application.Resources> <viewModels:ViewModelLocator x:Key="Locator" /> </Application.Resources> When I set the data context in my main window using:

I am integrating SqlCacheDependency to use in my LinqToSQL datacontext. I am using an extension class for Linq querys found here - http://code.msdn.microsoft.com/linqtosqlcache I have wired up the code and when I open the page I get this exception - "The SQL Server Service Broker for the current database is not enabled, and as a result query notifications are not supported. Please enable the Service Broker for this database if you wish to use notifications." its coming from this event in the global.asax protected void Application_Start() { RegisterRoutes(RouteTable.Routes); //In Application

I have been trying to find a way to have command buttons within my ListBoxItem's of a ListBox control. I use MVVM and Command Binding to the DataContext via ICommand interface . I am unable to find a way to bind to the Views DataContext from within the ListBox ItemsSource . I continue to get a Command "Not Found" error . Can anyone help me understand how to accomplish this. I believe that it has something to do with the command binding path, but I am unsure. Any help or direction would be great. The DataContext of items in a ListBox will be the item they represent. So if your ItemsSource is

So, here is the situation - I insert an item in the database calling the AddtoObject() and then call SaveChanges(). Then, I call a stored procedure to update the currently inserted record. Then, I call the Save changes() again. The database when I query it has the correct updated value, but the entity framework context does not have the updated values..the first time..whenever I refresh the page it gets the value..but the first time it never gets the updated values. So has anyone faced a similar issue anytime ? What am I doing wrong here ? The problem is that the EF does not know what your

Following a first question on WPF Cascading Binding , I remarked that I had more Resources than desired defined in both the MainWindow and the UserControls : This is well seen in Snoop the MainWindow XAML has an "instance" of a MainWindow ViewModel that paints the 2 usercontrol in green and blue additionnaly there are 2 instances of usercontrol viewmodels for each of the 2 UserControls that would paint the inner circle in red My first Intention in the Usercontrol was to be able to see " live " how my control would look like ( I painted it red to distinguish this "model" from the green and blue

I have a UserControl that is used in a parent control in this way: <Views:TranslationTextInput Translation="{Binding SelectedEntity.Name}"/> The parent control DataContext is a ViewModel containing the SelectedEntity Property. In my child UserControl I define a new ViewModel as the DataContext: <UserControl.DataContext> <vm:TranslationTextInputViewModel x:Name="vm"></vm:TranslationTextInputViewModel> </UserControl.DataContext> In the code behind I have: public static readonly DependencyProperty TranslationProperty = DependencyProperty.Register("Translation", typeof(Translation),typeof