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2026 v2

C1.DataCollection

Improvements

  • Added support when JsonSerializerIsReflectionEnabledByDefault is set to false to the following libraries:

    • Serialization

    • SignalR.Client

    • SignalR.Server

  • Added the AddDataCollection extension for serialization.

  • Added support for IsAotCompatible to the following libraries:

    • AdoNet

    • Android

    • iOS

    • BindingList

    • EntityFrameworkCore

    • Serialization

    • SignalR.Client

    • SignalR.Server

    • Win

    • WinUI

    • WPF

Bug fixes

  • Fixed an issue where members of the non-generic C1LengthList were incorrectly trimmed in net7 when a dependency originated from a net6 library.

  • Fixed an issue where C1WrapDataCollection did not handle collections of structures correctly.

C1.DataConnector

Bug Fixes

  • Fixed an issue where OData queries failed to parse DateTime filter expressions containing incorrectly URL-encoded special characters.

  • Fixed an issue where OData connections with an empty schema caused exceptions during schema retrieval and data querying.

C1.DataEngine

Improvements

  • Updated the C1.DataCollection dependency to version 10.0.20262.5.

C1.PDF

Improvements

  • Updated Mescius License Manager.

  • Added support for the public C1.Util.BigEndianBinaryReader and C1.Util.BigEndianBinaryWriter classes.

  • Added support for demonstrating PDF linearization with a multi-page document in the CreatePDF sample.

  • Added support for the Picture property with the RtfPicture type on the RtfPictureShape object.

  • Added support for PDF linearization through the C1PdfDocument.UseLinearized property.

  • Added support for rendering C1Chart and C1Diagram content to PDF, DOCX, and RTF formats through C1PdfDocument and C1WordDocument.

  • Added support for demonstrating chart and diagram rendering in the ChartToPdf sample.

Vulnerability Fixes

  • Fixed package vulnerabilities by updating System.Security.Cryptography.Pkcs dependency from 9.0.0 to 9.0.21 to address CVE-2026-84008

Bug fixes

  • Fixed an issue where metafile image were rendered incorrectly when the image was converted to SVG.

  • Fixed an issue where heading fonts were not retained when loading and saving DOCX files through C1WordDocument.

  • Fixed an issue where Japanese characters were displayed when FullWidthBullet lists were created using AddListTexts in C1Word.

  • Fixed an issue where RussianLowerLetter and RussianUpperLetter lists were not displayed correctly in DOCX files when created using AddListTexts in C1Word.

  • Fixed an issue where vertical text extended beyond the rectangle bounds when converting metafile images to HTML.

  • Fixed an issue where radio buttons and checkboxes were not displayed when converting HTML files to PDF through DrawStringHtml().

  • Fixed an issue where submit and reset buttons were not rendered correctly when converting HTML files to PDF through DrawStringHtml().

  • Fixed an issue where some text was not displayed when previewing generated PDF files in the default PDF viewers of Firefox and Edge.

  • Fixed an issue where table cell widths did not reflect the specified CELLPADDING attribute when converting HTML files to PDF through DrawStringHtml().

  • Fixed an issue where text input fields were not displayed when converting HTML files to PDF through DrawStringHtml().

C1.Excel

Improvements 

  • Updated Mescius License Manager.

  • Added support for rendering C1Chart and C1Diagram content to HTML with PNG and SVG output through C1.Excel.

  • Added support for rendering chart and diagram content with SvgRendering and SvgGraphicsRendering.