Define ReportViewer Params dialog box
Add a new parameter (name-value pair) to the ReportViewer component’s array or edit an existing one.
Dialog box options
Name
Enter a name for the new parameter.
Value
Enter a value for the new parameter.
How to get there: In the Inspector, select the ReportViewer component. Then click the wrench tool beside the params property. In the ReportViewer Params Property Builder, click New or Modify.