Returns TRUE if the evaluated expression is the empty cell value, FALSE otherwise.
IsEmpty(«Value Expression»)
The IsEmpty function is the only way to reliably test for an empty cell, because the empty cell value has special meaning to Microsoft® SQL Server™ 2000 Analysis Services. For more information about empty cells, see the OLE DB documentation.
The following example returns TRUE if Measures.CurrentMember is an empty cell:
IsEmpty(Measures.CurrentMember)