CommandBar IsOpen={Binding} does not work

Question

Hello everybody,

I want to bind the property "IsOpen" of a CommandBar to a bool value of my ViewModel.

However even this simple version does not work:

<CommandBar x:Name="CommandBar1" IsOpen="{Binding}">

and in CodeBehind:

CommandBar1.DataContext = true;

Of course, this is a very simple example, but in my opinion this should work, so that the CommandBar is shown.

A direct

CommandBar1.IsOpen = true;

works fine . . .

Thank you very much in advance!

Answer 1

its an timing issue. try to set the datacontext in the page load event

public MainPage()
        {
            this.InitializeComponent();
            this.Loaded += MainPage_Loaded;
        }

        void MainPage_Loaded(object sender, RoutedEventArgs e)
        {
            CommandBar1.DataContext = true;
        }

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Microsoft Certified Solutions Developer - Windows Store Apps Using C#

Answer 2

Thank you very much! That solved the issue.