如何在回发时刷新报表查看器报表

I have a simple report in VS2012 asp.net, deriving from an .rdlc file which takes in month and year as parameters, which are extracted from their respective dropdowns. I've set the dropdowns to autopostback, but my report isn't refreshing to reflect the new parameters. In debug, it doesn't even hit the method that retrieves the data. I have a simple report in VS2012 asp.net, deriv