Dynamic Binding of Property to PropertyStatus Causes PropertyStatus Not to Show

Nitronie posted on Thursday, June 28, 2012

Hey,

I'm developing a form to edit the properties of one of my Business Objects in Silverlight, and since each property is displayed for editing much the same way, I was trying to make the job easier by making a custom UserControl that would display the FriendlyName in a TextBlock, the actual String in the property in a TextEdit (using DevExpress control, but I assume this is the same name for normal TextBoxes), and then a PropertyStatus for the Property next to the TextEdit. 

I got this working with TwoWay Binding on the form, but when I tried to pull it out into a seperate UserControl for DRY, only the PropertyStatus is not updating and showing the error. I know it has the error, because when I debugged it and hovered over the name of the PropertyStatus in the code-behind it showed that the object had correctly picked up the error, it just wasn't displaying it. 

I'm using the following code to accomplish this:

 

Since I was having problems binding the property to the different UserControls in the XAML, I pulled it into the code behind using the following method:

 

public void SetupBindings(Csla.PropertyInfo<String> property, Object dataContext)

        {

            this.propertyNameLabel.Text = property.FriendlyName + ":";

 

            //set up binding object

            Binding b = new Binding();

            b.Path = new PropertyPath(property.Name);

            b.Mode = BindingMode.TwoWay;

            b.Source = dataContext;

 

            this.propertyNamePropertyStatus.SetBinding(Csla.Xaml.PropertyStatus.PropertyProperty, b);

            this.propertyNameTextEditor.SetBinding(DevExpress.Xpf.Editors.TextEdit.TextProperty, b);

        }

 

 

 

Then the form (the parent of the custom control) calls the method like this:

 

public FormView()

        {

            InitializeComponent();  

            this.DataContextChanged += new DependencyPropertyChangedEventHandler(FormView_DataContextChanged);

        }

 

void FormView_DataContextChanged(object sender, DependencyPropertyChangedEventArgs e)

        {

            this.propertyTextEditorControl.SetupBindings(

               MyCslaLibrary.MyObject.MyPropertyProperty, this.DataContext);

        }

 

 

The DevExpress TextEdit will display the Validation Error just fine, but I don't like the way it does, and it doesn't display warning, information, and busy status, so I'd really rather use the PropertyStatus control, but it's not working. Please help.