Bind to Property in Another Class

Question

I've read up on binding to other classes but the syntax is tripping me up.

I have properties in my MainWindow.xaml.cs and I'd like to reference them SecondWindow.xaml.

I tried {Binding Source={x:Static local:MainWindow.Test}} but it complains about Key being null.

Update

Following the suggestion, I set the SecondWindow context to my MainWindow as well as tried setting the ParentHandle.

When the application runs, I get a bunch of runtime errors like this.

System.Windows.Data Error: 40 : BindingExpression path error: 'LabelColor' property not found on 'object' ''SecondWindow' (Name='secondWindow')'. BindingExpression:Path=LabelColor;

Check out this question... stackoverflow.com/questions/2037773/… — AjayK
– AjayK, Commented Feb 22, 2012 at 18:53

ChaosPandion · Accepted Answer · 2012-02-22 18:48:31Z

1

I think you can do something like this:

// I suppose MainWindow will new up an instance during some event. var window = new SecondWindow(); window.DataContext = this; // Set to MainWindow window.Show();

Then access it like this:

{Binding Test}

answered Feb 22, 2012 at 18:48

ChaosPandion

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2 Comments

Ternary Over a year ago

Ah interesting. Is it possible to have multiple data contexts so some can go to SecondWindow and others to MainWindow?

paparazzo Over a year ago

@Ternary I think you can only have one DataContext but with most controls you can set the ItemsSource and that control will ignore and DataContext from above.

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