Released: Feb 6, 2026

Updates in 2026 (Build 4.2026.2.6)

Features

• Added Tornado Chart series type:
  • Ideal for side-by-side comparisons and sensitivity analysis, clearly highlighting the relative impact of variables in a clean, intuitive layout.
• Added support for custom tools in Editor Tools list.

Fixes

• Legend scrollbar can incorrectly re-dimension.

Released: Nov 30, 2025

Updates in TeeChart for .NET 2025 (Build 4.2025.11.30)

Features

• New function type - Vapor Pressure Deficit (VPD)
  • Vapor Pressure Deficit is a function used to follow the relationship between temperature and humidity. Often used in horticulture where greenhouses can control the relationship between the variables.

Fixes

• Fixed issue where SurfaceNearest Tool can hide series colours under some circumstances.

Released: Jul 9, 2025

Updates in TeeChart for .NET 2025 (Build 4.2025.7.7)

Fixes

• Fixed issue where scrolling inverted legend positioned on top causes crash.
• Fixed issue where Sankey Series Labels in vertical orientation not correctly aligned.
• Fixed issue when clicking on a chart with a series on it - BeforeDrawSeries event is triggered and erases custom drawing.
• Fixed Axis zoom.

Released: May 7, 2025

Updates in TeeChart for .NET 2025 (Build 4.2025.5.7)

Fixes

• Fixed: TeeChart for Avalonia. Pie series not rendering sidewalls.

Released: Feb 22, 2025

Updates in TeeChart for .NET 2025 (Build 4.2025.2.22)

Features

• Added GDI+ line curve option alongside TeeChart's Smoothing option. eg.
  line1.FillSampleValues(20);
  line1.Smoothed = true;
  line1.SmoothStyle = SmoothStyles.PointsCurve; //<-- new option

Fixes

• Fixed an issue where the custom axes stats don't update correctly on zoom.
• Fixed an issue where the LineSeries smoothing didn't handle Nan points.

Released: Oct 2, 2024

Updates in TeeChart for .NET 2024 (Build 4.2024.10.2)

Fixes

• Fixed possible clipping error at chart top when rendering from Console app.
• Fixed issue with JavaScript render lag and slow to process large datasets.

Released: Aug 30, 2024

Updates in TeeChart .NET for Blazor 2024 (Build 6.2024.8.30)

Fixes

• Fixed .NET 5+ image export problems when some font types are set.

Released: Aug 30, 2024

Updates in TeeChart for .NET 2024 (Build 4.2024.8.30)

Fixes

• Fixed .NET 5+ image export problems when some font types are set.

Released: Jul 22, 2024

Updates in TeeChart for .NET 2024 (Build 4.2024.7.22)

Fixes

• Drawline tool generating error on draw.

Released: Jul 22, 2024

Updates in TeeChart .NET for Blazor 2024 (Build 6.2024.7.22)

Fixes

• Drawline tool generating error on draw.