Hi,Joe, thanks for your reply, it can work if the datasource is dataset, but how about the datasource is ObjectDataProvider? I tried this type datasource, it seems defining both parent field layout and child field layout can't work.

Joe,

I have a hierarchical structure like below. When I bind an instance of NetWork to the XamDG, all these 4 levels will be displayed by default with AutoGenerateFields="True". What if I want to show only 2 or 3 level? I set AutoGenerateFields="false" and defined 2 FieldLayouts, it didn't work as intended. Only top level was shown. Do you have any idea on that?

Thanks,

Jackie

public class NetWork
    {
        public ObservableCollection<Domain> Domains { get; set; }
    }
    public class Domain
    {
        public ObservableCollection<Machine> Machines { get; set; }
    }
    public class Machine
    {
        public ObservableCollection<Service> Services { get; set; }
    }
    public class Service
    {
        public ObservableCollection<Child> Children { get; set; }
    }
    public class Child
    {
    }

As I said in my previous comment, I was able to get this hierarchical data to display correctly but I'm having a problem selecting rows within my XamDataGrid when there is a hierarchy of records displayed.  I set the 'SelectionTypeRecord' property in my FieldLayoutSettings to "Extended" and I'm able to multi-select child records in any of my top-level records.  But once I select multiple records under one parent node, I can’t select any other child records in the other nodes.  What am I missing here?  Anyone have any ideas?

I have also tried to set the SelectionTypeRecord property of the child Layout in the FieldLayoutInitialized method of XamDataGrid  like below but of no use.
XamDataGrid1.FieldLayouts[1].Settings.SelectionTypeRecord = Infragistics.Windows.Controls.SelectionType.Extended;
XamDataGrid1.FieldLayouts[1].Settings.SelectionTypeField = Infragistics.Windows.Controls.SelectionType.Extended;
XamDataGrid1.Records.FieldLayout.Settings.SelectionTypeRecord = Infragistics.Windows.Controls.SelectionType.Extended;

Hi Jackie,

I'm having the same problem.  I couldn't find a way to fix this in my xaml code, but was able to work around this in source code.  I created an event handler for the InitializeRecord event as shown below:

 {
        ....
       
        this.myDataGrid.InitializeRecord +=new EventHandler<Infragistics.Windows.DataPresenter.Events.InitializeRecordEventArgs>  (myDataGrid_InitializeRecord);

}

void myDataGrid_InitializeRecord(object sender, Infragistics.Windows.DataPresenter.Events.InitializeRecordEventArgs e)
{

 if(! e.Record.HasChildren)
   e.Record.ExpansionIndicatorVisibility = Visibility.Collapsed;

}


If you end up finding a better way (especially in xaml), please share with the rest of us...

Ramiro

Hi,

I have another problem. The plus/minus will show up no matter whether there are sub items or not. How to hide them when there is no sub items?

Thanks,

Jackie

Great, thanks a lot.

Hi Jackieliu,

let's say you want to show only 2 levels, you need to define 2 FieldLayouts.

<FieldLayout Key="Network">

<Field Name="NetworkProperty1"/>

<Field Name="NetworkProperty2"/>

<Field Name="Domains"/> *name of the property that returns you IEnumerable that contains next level of data.*

</FieldLayout>

<FieldLayout Key="Domain">

<Field Name="DomainProperty1"/>

<Field Name="DomainProperty2"/>

</FieldLayout>

</FieldLayout>