Hello Chris,

Thank you for your reply.  I have been looking into the modified sample application and I was able to reproduce the issue that you have described.. The behavior seems to be caused by the virtualization of the LabelPresenters. Since you are binding the Background to the LabelPresenter itself and since the LabelPresenter are virtualized, the binding is fired once, when the labels are loaded. When you start scrolling the LabelPresenter are reused and a LabelPresenter which was initially used for an Field with index 2 is used for different Field with index 7 for example. Since the LabelPresenter is not  reloaded and reinitialized, the binding is not firing and the LabelPresenter is not colored correctly. In order to avoid this behavior you can bind the Background to the Index of the Field corresponding to the LabelPresenter, since it is changed when the LabelPresenter is reused. I have noticed that you are using the XamDataGrid in the converter, in order to bind the Background to the Index and the XamDataGrid, I can suggest using MultiBinding. I have modified the sample application that you have attached, in order to show how you can implement the MultiBinding.

Please let me know if you need any further assistance on the matter.

Sincerely,

Krasimir

Developer Support Engineer

Infragistics