Breaking Changes

Updated on Apr 14, 2026

This article lists and describes the breaking changes introduced in the RadSpreadsheet component. For a full list of changes, see the Release History pages of the Telerik UI for WPF product.

2018 R2

The default value of Telerik.Windows.Documents.Spreadsheet.Model.Printing.SheetPageSetupBase::PaperType has been changed from A4 to Letter.

If you need to keep the document with A4 PaperType, you can apply this setting before exporting it:

C#

	foreach (Worksheet worksheet in workbook.Worksheets)
	{
		worksheet.WorksheetPageSetup.PaperType = PaperTypes.A4;
	}