WPF绑定到不在DataGrid ItemSource中的属性

Question

I am wondering how I can bind a DataGrid DataGridTemplateColumn to a property in that isn't in the DataGrid ItemSource, but the property is within the same DataContext of the Itemsource?

XAML

        // I am trying to bind the Visibility property to a property called Visible
        <DataGridTemplateColumn Header="Apply" Visibility="{Binding source Visible}">

        // However the visible property doesnt exist inside the resource cvsCustomers
        ItemsSource="{Binding Source={StaticResource CustomerCollection}}"

C#

    // But they both live in the same ViewModel i.e. DataContext      
    private Visibility m_Visible = Visibility.Hidden;

    public Visibility Visible
    {
       get { return m_Visible; }
       set { m_Visible = value; }
    }

    private ObservableCollection<Customer> m_CustomerCollection = null;

    public ObservableCollection<Customer> CustomerCollection
    {
       get { return m_CustomerCollection; }
       set { m_CustomerCollection = value; }
    }

Can this be achieved?

Thanks

Answer 1

Datagrid columns does not comes under the visual tree of the DataGrid . hence you will need to use the BindingProxy to make ViewModel accessible to your DataGridTemplateColumn . I have explained how to create and use BindingProxy in the answer below:

Bind ViewModel property to DataGridComboBoxColum

Once you have setup the BindingProxy you can bind your DataGridTemplateColumn visiblity as

<DataGridTemplateColumn Header="Apply" Visibility="{Binding Path=Data.Visible, Source={StaticResource ProxyElement}"