UltraWinGrid Data Binding to Hierarchical Objects

Question

My situation:

• I have a .Net Windows application in VB.Net
• I'm upgrading from .Net Framework 1.1 to 2.0
• I'm using Infragistics NetAdvantage 2004 Volume 3

My issue:

I have an object hierarchy that looks like this, where ArrayListOfBand1Objects is my DataSource for an UltraWinGrid:

• ArrayListOfBand1Objects [ArrayList]
  • [Band1Class]
    • ContainerObject [ContainerClass]
      • ArrayListOfBand2Objects [ArrayList]
        • [Band2Class]

E.g.,

ArrayListOfBand1Objects(0).ContainerObject.ArrayListOfBand2Objects(0)

When setting the ArrayListOfBand1Objects as the DataSource for the grid in .Net 1.1, the hierarchy works correctly and I get 2 bands: one for Band1Class and one for Band2Class.

When running the same code in .Net 2.0, I get a first band of Band1Class objects and a second band, but the second band is empty.

My questions:

• Is the issue the intervening ContainerObject? I.e., should the object hierarchy be set up to directly expose ArrayListOfBand2Objects as a property of Band1Class for this to work correctly? E.g., the hierarchy would look like:

ArrayListOfBand1Objects(0).ArrayListOfBand2Objects(0)

• Is there a way to set up the grid so it uses the correct ArrayList, in its current hierarchy?