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
    {
    }

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>

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

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

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;