Aspose::Words::Drawing::Charts::ChartDataLabel::get_Index method. Specifies the index of the containing element. This index shall determine which of the parent's children collection this element applies to. Default value is 0 in C++....Aspose::Words::Drawing::Charts::ChartDataLabel::get_Index method. Specifies the index of the containing element. This index shall determine which of the parent's children collection this element applies to. Default value is 0 in C++.