Merge pull request #696 from telerik/new-kb-richtexteditor-custom-page-size-efb93fd534b4474fb61b846cf89111d4

Added new kb article richtexteditor-custom-page-size

Author: DinkoK

knowledge-base/richtexteditor-custom-page-size.md

@@ -0,0 +1,36 @@
+---
+title: Setting Custom Page Size on Document in RadRichTextEditor
+description: Learn how to configure a custom page size, such as 3"x3", for documents in RadRichTextEditor.
+type: how-to
+page_title: How to Configure Custom Page Sizes in RadRichTextEditor for WinForms
+slug: radrichtexteditor-winforms-custom-page-size
+tags: richtexteditor, winforms, custom, page size
+res_type: kb
+ticketid: 1683831
+---
+
+## Environment
+
+|Product Version|Product|Author|
+|----|----|----|
+|2025.1.211|RadRichTextEditor for WinForms|[Nadya Todorova](https://www.telerik.com/blogs/author/nadya-karaivanova)|
+
+## Description
+
+This knowledge base article shows how to define custom dimensions of a document in RadRichTextEditor. Baically, RadRichTextEditor provides **Telerik.WinForms.Documents.Model.PaperTypes** enumeration, but it does not allow users to define custom sizes such as 3"x 3" dimensions.
+
+## Solution
+
+To set a custom page size in RadRichTextEditor, such as 3"x 3", use the `ChangeSectionPageSize()` method. This method should be called after the document is loaded. Use the following code snippet to implement custom page sizing:
+
+````C#
+
+var size = new Telerik.WinControls.RichTextEditor.UI.Size(762, 762);
+this.radRichTextEditor1.RichTextBoxElement.ActiveDocumentEditor.ChangeSectionPageSize(size);
+
+````
+
+## See Also
+
+- [RadRichTextEditor Documentation](https://docs.telerik.com/devtools/winforms/controls/richtexteditor/overview)
+- [Working with Sections in RadRichTextEditor](https://docs.telerik.com/devtools/winforms/controls/richtexteditor/document-elements/section)