How to change Gridview Header Column names dynamically

Hello, 

I want to change Gridview Header column names dynamically with if condition.

Can anyone please help me with that ? 

for example

IF condition 1 

UserID |   Full name | Transaction Amt |  Tancaction Date 

IF condition 2 

UserID | Full Name | DOB | Balnace | Date 

Can anypne tell me how to change Header column name for single Gridview dyanamically ? 

Thank you 

Sandy