Question

I’m trying to do a Data Binding in the C# code behind rather than the XAML. The XAML binding created in Expression Blend 2 to my CLR object works fine. My C# implementation only updates when the application is started after which subsequent changes to the CLR doesn’t update my label content.

Here’s the working XAML binding. First a ObjectDataProvider is made in my Window.Resources.

<ObjectDataProvider x:Key='PhoneServiceDS'      ObjectType='{x:Type kudu:PhoneService}' d:IsDataSource='True'/> 

And the label content binding:

<Label x:Name='DisplayName' Content='{Binding      Path=MyAccountService.Accounts[0].DisplayName, Mode=OneWay,      Source={StaticResource PhoneServiceDS}}'/> 

Works great. But we want this set up in C# so we can independently change the XAML (ie. new skins). My one time working C# as follows:

     Binding displayNameBinding = new Binding();      displayNameBinding.Source =           PhoneService.MyAccountService.Accounts[0].DisplayName;      displayNameBinding.Mode = BindingMode.OneWay;      this.DisplayName.SetBinding(Label.ContentProperty, displayNameBinding); 

This is inside my MainWindow after InitializeComponent();

Any insight why this only works on startup?

Answer 1

Your C# version does not match the XAML version. It should be possible to write a code version of your markup, though I am not familiar with ObjectDataProvider.

Try something like this:

Binding displayNameBinding = new Binding( 'MyAccountService.Accounts[0].DisplayName' ); displayNameBinding.Source = new ObjectDataProvider { ObjectType = typeof(PhoneService), IsDataSource = true }; displayNameBinding.Mode = BindingMode.OneWay; this.DisplayName.SetBinding(Label.ContentProperty, displayNameBinding);