Creating reports and dashboards | Stimulsoft community forum
Reporting tool and data analytics tools for creating reports and dashboards in ASP.NET, ASP.NET MVC, .NET Core, Blazor, Angular, PHP, Python, WPF, JavaScript, and Java applications.
There is an other way out.
You could create your own collection of Paper Sizes and set it to StiOptions.Print.CustomPaperSizes. Also you should set the StiOptions.Print.AllowUsePaperSizesFromPrinterSettings to false.