The ActiveReports Server installation includes a REST API sample for WinForms that you can find in:
C:\ActiveReports 12 Server\SDK\Samples\RestApi Sample WinForms
This sample is also part of the ActiveReports Server Samples project that you can find in:
C:\ActiveReports 12 Server\SDK\Samples
The REST API sample demonstrates how to call the most frequently used REST API methods in your application linked to ActiveReports Server. To open the solution, double-click the WinForms REST API Sample.csproj file.
Note:
When a report is open for preview, you can choose one of the following operations to perform on the report.
You can choose from the following available formats to save your report. When you click the Run button, the report is saved in the selected format.
When you click the Run button with the selected Print option, the following window appears. Select the Server printing options and click Print.
For the ActiveReports Server REST API documentation, please see http://arhelp.grapecity.com/webhelp/AR12Server/WebAPI/index.html.