Is there a way for the UltraNumericEditor to be used by a cell and or column in a grid as the editor? I get a cast exception when trying to cast UltraNumericeEditor to a EmbeddableEditorBase.
Use the EditorControl property of the Column/Cell instead of the Editor property. The control itself does not derive from EmbeddableEditorBase, but rather uses the editor within its own bounds to perform the relevant logic. When you set the control as the EditorControl, the editor that the control is using will be cloned and used as the editor for the Column/Cell.
-Matt