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Telerik® UI for Blazor 12.0.0 (2025 Q4)

November 12, 2025

Common

NEW
  • Compatibility with .NET 10
Dependencies
  • Telerik Document Processing Library (DPL) version is updated to 2025.4.1104
  • Supports Bootstrap theme version 12.2.3
  • Supports Classic theme version 12.2.3
  • Supports Default theme version 12.2.3
  • Supports Fluent theme version 12.2.3
  • Supports Material theme version 12.2.3
  • Update Telerik.Licensing to 1.6.31

Chart

NEW
  • Add style observer
FIXED
  • JavaScript error when showing Chart under the mouse cursor dynamically

Chat

NEW
  • Add separate message bubble and message templates for receiver and author messages
  • Add separate receiver and sender message settings
  • Add message bubble template
  • Add class to chat send message button settings
  • Add suggestions and message suggested actions layout mode
  • Add message files layout mode
  • Add no data template
  • Add typing field in the message to allow rendering typing indicator
FIXED
  • Message context menu click should not select the message
Breaking Changes
  • MessageTemplate is renamed to MessageContentTemplate. MessageTemplate is still valid template but replaces the whole message bubble element

FileSelect

NEW
  • Add file info template
  • Add file template

Filter

Breaking Changes
  • ValueChanged parameter is removed.

Grid

NEW
  • Breaking changes to Smart AI Grid features
  • Add new Smart AI Grid features
  • Add header template for command columns
FIXED
  • Do not trigger StateChanged multiple times
  • NullReferenceException when using multiple enum flags
Breaking Changes
  • Add breaking changes for Smart AI Grid

NumericTextBox

FIXED
  • Clear button click and blur restores previous value

Pager

Breaking Changes
  • Adaptive parameter is removed.

PdfViewer

FIXED
  • Ensure component do not prepend additional text in the exported document
  • GetFileAsync method should return not initially uploaded file

PivotGrid

FIXED
  • Filter operator resets to Starts With instead of Contains

StockChart

NEW
  • Add style observer

TabStrip

FIXED
  • Render active tab content when using ActiveTabId
  • Remove k-item class

TimePicker

FIXED
  • Snap value is incorrect
  • Hide set now button when time steps are configured

Toolbar

FIXED
  • ToolBar items disappearing on parameter changes when OverflowMode is None or Scroll
Breaking Changes
  • Adaptive parameter is removed.

TreeList

NEW
  • Add header template for command columns

Upload

NEW
  • Add file info template
  • Add file template

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