How to: Create a Report (Report Designer)
To create a blank report
On the Project menu, click Add New Item. Alternatively, right-click the Reports folder in the project in Solution Explorer, point to Add, and then click Add New Item.
In the Categories list, click Report Server Project.
In the Templates list, click Report.
Type a name for the report, and then click Open.
The name of the report must have an .rdl extension. Otherwise, Report Designer cannot edit the file correctly.