'宣言 Public Function AddFormulaCondition( _ ByVal regionAddress As String, _ ByVal formula As String, _ Optional ByVal cellReferenceMode As Nullable(Of CellReferenceMode) _ ) As FormulaConditionalFormat
public FormulaConditionalFormat AddFormulaCondition( string regionAddress, string formula, Nullable<CellReferenceMode> cellReferenceMode )