Design Time Preview
Design time preview is the ability to preview the report at design time. In previous versions of Crystal Reports for Visual Studio .NET, the CrystalReportViewer control in Web projects offered design time preview, when the report was assigned as a file directory path to the ReportSource property in the Properties window.
This feature has now been added to Windows projects. When the report is assigned to the ReportSource property in the Properties window, a preview of the report is displayed in the Windows Form at design time.