WPF DataGrid: Binding to Parent object

Question

Here is my code behind

public partial class ChallanListView : UserControl
{
    public ObservableCollection<ChallanDS> challans = ChallanModel.GetChallansList();
    public ObservableCollection<QualityDS> qualities = ChallanModel.GetQualitiesList();

    public ChallanListView()
    {
        InitializeComponent();
        ChallansDataGrid.DataContext = this;
        ChallansDataGrid.ItemsSource = this.challans;
    }
}

Here is the xaml

<DataGrid Name="ChallansDataGrid" IsReadOnly="True" AutoGenerateColumns="False">
    <DataGrid.Columns>
        <DataGridTextColumn Header="Challan Date" Binding="{Binding ChallanDate, StringFormat=d}"/>
        <DataGridTemplateColumn Header="Quality" Binding="?????????????????">
        </DataGridTemplateColumn>
    </DataGrid.Columns>
</DataGrid>

For Quality cell I want to bind it to "qualities" list which is in my ChallanListView. How can I do that.

@mm8 can't we make use of Ancestor feature? I am new to WPF and MVVM. — , Aug 31 '17 at 15:17
Definitely not. A DataGridColumn has no visual ancestor to begin with. — mm8, Aug 31 '17 at 15:19
And a column must have a "connection" to a property of the underlying data object for the DataGrid to function as expected. So just forget about this. Add a property to your ChallanDS class and set it on all objects that you intend to display and edit in the DataGrid. — mm8, Aug 31 '17 at 15:24

score 0 · Accepted Answer · answered Aug 31 '17 at 15:18

0

You can't. You can only bind a column to a property of the data object in the DataGrid's ItemsSource. That's how a DataGrid works.

So you should move whatever property you want to bind to to the ChallanDS class.

answered Aug 31 '17 at 15:18

mm8

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It's not impossible. Just have to work around the visual tree issue. See https://stackoverflow.com/questions/22073740/binding-visibility-for-datagridcolumn-in-wpf – tjmoore May 10 '18 at 16:28

WPF DataGrid: Binding to Parent object

1 Answers1