WPF DataGrid column binding overridden by auto generated columns

Question

I'm using DataGrid from WPF Toolkit - The latest one. But the below code is not working

XAML code

    <dg:DataGrid 
    Grid.Row="1"
    Name="eventLogGrid"
    Margin="5,0,5,0"
    BorderBrush="Black"
    ItemsSource="{Binding EventLogs}"
    SelectionMode="Single"
    IsReadOnly="True">
    <dg:DataGrid.Columns>
        <dg:DataGridTextColumn
            Binding="{Binding EventID}" Header="Event ID" />
        <dg:DataGridTextColumn
            Binding="{Binding Server}" Header="Server" />
        <dg:DataGridTextColumn
            Binding="{Binding Source}" Header="Source" />
        <dg:DataGridTextColumn
            Binding="{Binding Logged}" Header="Logged" />
    </dg:DataGrid.Columns>

</dg:DataGrid>

C# code

public class EventLogItem
{
    public long EventID { get; set; }
    public string Name { get; set; }
    public string Message { get; set; }
    public Server Server { get; set; }
    public string Source { get; set; }
    public EventLogEntryType Level { get; set; }
    public DateTime Logged { get; set; }
    public string Machine { get; set; }
}
public List<EventLogItem> EventLogs
{
    get { return (List<EventLogItem>)GetValue(EventLogsProperty); }
    set { SetValue(EventLogsProperty, value); 
}

The real issue here is that although I specified the columns and its binding in the xaml code, but when the data arrived, every property is occupying a column. The desired effect is that only thosed bound properties are shown.

Answer 1

DataGrid has a property AutoGenerateColumns, which is by default set to true, giving you the extra columns that you don't expect. Just set AutoGenerateColumns="False" in your xaml declaration for DataGrid and you will get only the specified columns.

(Personally, I've always found this more of an annoyance than a convenience too!)