Hi,

please look at the attached images. Image1 shows how the datagrid looks when my application starts.

I then populate my datagrid on a button click from codebehind. When I do this, Image2 shows how my populated datagrid looks.

However, when I expand my starting datagrid as shown in the following image

and then try to populate my datagrid, I get this...

That is, the hierarchy is not getting bound. What is going on? I have set AutoGenerateFields to false, and have created my own layout.

Also,

I'm assigning a different fieldlayout to each row..i've given it as

private void DataGrid_AssigningFieldLayoutToItem(object sender, Infragistics.Windows.DataPresenter.Events.AssigningFieldLayoutToItemEventArgs e)

        {

            ExpandableFieldRecord parent = e.ParentExpandableFieldRecord as ExpandableFieldRecord;

            if (parent != null)

            {

                DataGridItemType dgit = parent.ParentDataRecord.DataItem as DataGridItemType;

                if (dgit != null)

                {

                    if (dgit.Type == "xxxxxxx")

                    {

                        e.FieldLayout = this.DataGrid.FieldLayouts[1];

                    }

                    if (dgit.Type == "yyyyyyy")

                    {

                        e.FieldLayout = this.DataGrid.FieldLayouts[2];

                    }

                }

            }

        }