Hi Aspose Support team,
Thank you for the reply. Still i am not able to set the Multi-level Category Labels as true. i have attached the sample Project(solution) and the Multi-level Category.xlsx(For source, Please put this file in C drive).
In the sample solution, i have 4 excel sheets. 1.Data. 2.VSummary 3.PSummary 4.BP.
In the sheet Vsummary and PSummary, i am setting in the category axis property HasMultiLevelLabels as false(Line no 409, 489). It is working fine. (For verification goto Format axis of Category axis - the check box is not checked). Please refer the attached Multi_Level_Category_Labels_not_set.jpeg
In the sheet BP, i am setting in the category axis property HasMultiLevelLabels as true(Line no 613). It is not working.
Please let me know if you need additional information regarding this.