The following example demonstrates how to set the ShipName column as a grid's main column. 

XAML
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<Grid xmlns:xcdg="http://schemas.xceed.com/wpf/xaml/datagrid">
  <Grid.Resources>
    <xcdg:DataGridCollectionViewSource x:Key="cvs_orders"
                                    Source="{Binding Source={x:Static Application.Current},
                                                      Path=Orders}"/>
   </Grid.Resources>
   <xcdg:DataGridControl x:Name="OrdersGrid"
                         ItemsSource="{Binding Source={StaticResource cvs_orders}}"
                         View="CardView">
      <xcdg:DataGridControl.Columns>
        <xcdg:Column FieldName="ShipName" IsMainColumn="True"/>
      </xcdg:DataGridControl.Columns>
   </xcdg:DataGridControl>
</Grid>
VB.NET
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dataGridControl.Columns( "ShipName" ).IsMainColumn = True
C#
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dataGridControl.Columns[ "ShipName" ].IsMainColumn = true;