ReportViewer ASP Component RefreshReport didn''t appear.

Hi every body !
I try to insert the reportViewer in my asp page, all is good, but if I want to change (by choosing another report), and i cannot call the method RefreshReport() as I saw in the msdn documentation.
I didn't understand why, I download the ReportViewer from msdn download : the version is 2.0.50727.42 from 22/01/2006...
I implement in my asp designer tools the following dll : Microsoft.SqlServer.UpgradeAdvisor.ReportViewer.dll 9.0.1399.1 from 14/10/2005

Did I forget any code line ? or did I download a bad version ?

Code Snipp

ReportViewer1.ServerReport.ReportPath += "CounterReport";

ReportViewer1.Refre.... //Visual studio didn't propose the method !!

This method is available only with the WinForm version of the ReportViewer. With the ASP.NET version you don't need to refresh the report.