ReportViewer.RefreshReport Method ()
Causes the current report in the Report Viewer to be processed and rendered.
Assembly: Microsoft.ReportViewer.WinForms (in Microsoft.ReportViewer.WinForms.dll)
Calling the RefreshReport method causes all data in the report to be reloaded and rendered. A call to RefreshReport is automatically added to the Form Load event handler when a ReportViewer control is added to a form.