Hello Madhan,
Thank you for posting in our forum.
Yes, you can show the actual column value on top of the column. What you need to do is to create a new ChartTextAppearance, set its properties and add it to the ChartText collection of your chart. Please follow the next link where you may find more information about how to implement this http://help.infragistics.com/Help/Doc/WinForms/2015.2/CLR4.0/html/Chart_Apply_Chart_Text_Labels.html.
In the attached sample project I have implement a Column chart with labels showing the column data value positioned above each column. Please check my sample and let me know if you have any further questions.
Thank you for using Infragistics Controls.