WPF Datagrid view header binding

Question

Actually the issue im facing is slight different than what title says. I try to sumarize the issue below.

Class PersonnelViewModel
{

public SelectedPersonne         


        

Answer 1

You can access the parents datacontext using

Binding="{Binding RelativeSource={RelativeSource FindAncestor, 
    AncestorType={x:Type DataGrid}}, Path=DataContext.ColumnName}" 

So to add a column showing A's Property do

<DataGridTextColumn Header="Company" Binding="{Binding RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type DataGrid}}, Path=DataContext.Company}"/>

Answer 2

Finally I managed to get it working. If I directly bind the property to the column header its not populating the value.

I had to do as following:

<DataGridTextColumn Binding="{Binding Name}">
    <DataGridTextColumn.Header> 
        <TextBlock Text="{Binding DataContext.MyProp, 
                       RelativeSource={RelativeSource FindAncestor, 
                       AncestorType={x:Type Window}}}" /> 
    </DataGridTextColumn.Header>
</DataGridTextColumn>