Hi Edward,

If TrustGL is an object inside of another object inside of a collection then none of these bindings will work.  The first thing I want to mention is that the Field class is not a FrameworkElement or DependencyObject so it is not part of the Visual Tree and it does not inherit a DataContext like a typical control would.  The DataContext property on the Field class is something Infragistics added and we set it up so that it would work in a similar manner.  The issue is, a typical binding such as "{Binding Path=TrustGL.GLAccountNumber}" won't work.  You need to specify a source for the binding.  The typical way to do this is by using "RelativeSource={RelativeSource Self}".  So:

"{Binding RelativeSource={RelativeSource Self}, Path=DataContext.MyViewModelProperty}"

Since your TrustGL object is inside another object which is inside a collection then your binding path needs to include this collection, accessing a specific item in this collection and then accessing TrustGL.  I don't know what the exact path should look like since I don't know what your structure actually looks like but it sounds like it should be something like this:

Path=DataContext.MyCollection[0].MyObject.TrustGL