I want to get the cell value display element. Any suggestion?
this is exposed by the Editor property of the CellValuePresenter of that cell. You can get the CVP with its static method CellValuePresenter.FromCell(...);
By defaut style, what control constitutes the CVP? And how can I access the control?
It contains multiple controls. You can find it in the DefaultStyles directory in the ProgramFiles-Infragistics... folder.