Dynamic columns display in report

I had integrated SSRS report in my MVC application using MVCReportViewer. My requirement is I want to display only those columns which user is specified at runtime.For example: I have a report which displays (EmployeeName,Salary,Gender, Phone,Age,...). At runtime I want to display only specified columns to user(say I want to display only EmployeeName,Salary). how can I do this