Release History

Progress® Telerik® Reporting 2026 Q1 (20.0.26.402)

April 2, 2026

Explicit control over Table of Contents levels for report items

NEW

• Report authors can now explicitly specify the level at which sections, groups, and items appear in the Table of Contents, instead of relying solely on the report hierarchy. This provides greater control over TOC structure and enables consistent, meaningful outlines across reports and report books.

What's Improved

NEW

• ObjectDataSource now supports async methods returning Task and ValueTask.
• The ReportProcessor class now exposes a method to list available rendering extensions.

What's Changed

CHANGED

• Telerik.WebReportDesigner.Blazor package now targets .NET 8.0.
• Telerik.ReportViewer.Blazor package now targets .NET 8.0.

Standalone Report Designer for .NET 8 and above

FIXED

• Fields cannot be dragged and dropped from the Data Explorer.
• Report engine does not automatically register System.Private.CoreLib types.

Web Designer

FIXED

• GetDesignerResource endpoint fails for requests with different letter casing.

Rendering

FIXED

• "Missing license" message is not displayed correctly in exported CSV and Excel files.

PDF Rendering

FIXED

• SVG polylines with dashed or thick strokes are rendered incorrectly in PDF export using GDI graphics engine.

HTML5 Report Viewer

FIXED

• Localization does not work for the Angular and React Report Viewer wrappers.

WPF Report Viewer

FIXED

• The 'text-indent' CSS property in the HtmlTextBox item produced causes a cut-off text to be rendered in XAML format.

Visual Studio Item Templates

FIXED

• The SampleReport report added with the new item template contains outdated links.

Product Dependencies