TabItem binding issue

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I am binding below tab item collection to two tab controls in two different screen when i switch between the screens tab control does not show any tab items can any one help on this.

C#

private ObservableCollection<TabItem> _leftContent = new ObservableCollection<TabItem>();

        public ObservableCollection<TabItem> LeftContent
        {
            get { return _leftContent; }
            set
            {
                _leftContent = value;
                RaisePropertyChanged("LeftContent");
            }
        }

Posted 23-Apr-14 4:29am

hari111r

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Shai Vashdi · Answer 1 · 2014-04-28T05:06:00

Solution 1

Well it's obvious! You are using the same instance of TabItem in two places!

TabItem is a Control, i.e. UI and not logic.

The idea of code separation between logic & UI (for example MVVM) can help you here:

For each TabItem:

1. Crate a View-Model containing his data.

2. Every TabControl (UI) instance, creates a new instance of TabItem (The View) but use the same View-Model instance.

I hope it helps :)

Posted 28-Apr-14 5:06am

Shai Vashdi

Comments

hari111r 3-May-14 5:06am

Hi Thanks for the solution Can you please tell me how to create a tab item on bind a collection of header and content to a tab control .

Shai Vashdi 3-May-14 6:17am

Hi,

Just create a class (View-Model) that is the DataContext of the TabItem. Every time you need to create a TabItem give him the instance of the this View-Model class as the DataContext.