52e1d29585
Three independent additions to the Spreadsheet API, motivated by the gap analysis against Excel COM, Office.js, Aspose, and Syncfusion: Multi-key sort (Pass 3) - New SortKey class: ColumnIndex (relative to the sort range), Order, SortOn, CustomList, CustomColor, CaseSensitive. - New SortOn enum: Values, CellColor, FontColor. - Worksheet.Sort(range, params SortKey[]) — stable, supports multiple sort levels, custom-list ordering, case sensitivity, sort by color. - Table.Sort(params SortKey[]) overload using table-relative indices. - Existing single-key Sort(range, order, keyIndex) retained for back-compat; redirects to the new API. - Empty cells always sort to the bottom regardless of direction (matches Excel and pre-existing test). - Cell.Clone now preserves Format (was dropped on the floor; the bug was masked because no caller of Clone read Format until color sort). Advanced filter criteria (Pass 2A) - TopFilterCriterion — Top/Bottom N items, by count or percent. - DynamicFilterCriterion — full DynamicFilterType enum with 34 values covering above/below average, today/yesterday/tomorrow, this/last/ next week/month/quarter/year, year-to-date, individual months, and Q1..Q4. - CellColorFilterCriterion — match cells by background or font color. - New OnApply(sheet, range) hook on FilterCriterion lets distribution- aware criteria (Top, AboveAverage) compute thresholds before the per-row Matches loop. Default no-op preserves existing behavior. - Visitor extended with three new Visit overloads + base no-op defaults. Per-column AutoFilter API (Pass 2B) - AutoFilter.ApplyValueFilter(col, values), ApplyCustomFilter(col, criterion), ApplyTopFilter(col, count, percent, bottom), ApplyDynamicFilter(col, type), ApplyColorFilter(col, color, fontColor), ClearColumnFilter(col), GetColumnFilter(col). - Column indices on these methods are RELATIVE to the AutoFilter range, matching the convention used by SortKey and Office.js TableSort. Tests - MultiKeySortContractTests: 11 facts (multi-key, custom list, case-sensitive, color sort, range bounds, no-op edges). - FilterCriterionContractTests: 11 facts (Top/Bottom by count and percent, AboveAverage, Today, ThisMonth, Quarter1, color filters, visitor dispatch). - AutoFilterPerColumnTests: 12 facts (each Apply* method, replace semantics, per-column clear, validation errors). 3,706 tests pass.
Radzen Blazor Components
The most sophisticated free UI component library for Blazor, featuring 145+ native components. MIT licensed, used by thousands of developers at companies like Microsoft, NASA, Porsche, Dell, Siemens, and DHL.
Supports .NET 10, Blazor Server, Blazor WebAssembly, and .NET MAUI Blazor Hybrid.
Online Demos · Documentation · Get Started
Star this repo ⭐ to support the project and help other Blazor developers discover it.
Quick start
Install the NuGet package:
dotnet add package Radzen.Blazor
Add to _Imports.razor:
@using Radzen
@using Radzen.Blazor
Add the theme and script to App.razor:
<!-- inside <head> -->
<RadzenTheme Theme="material" />
<!-- after the last <script> -->
<script src="_content/Radzen.Blazor/Radzen.Blazor.js"></script>
Register services in Program.cs:
builder.Services.AddRadzenComponents();
Use a component:
<RadzenButton Text="Hello World" Click="@OnClick" />
For the full setup guide including render modes and dialog/notification configuration, see the getting started instructions.
Components
AI — AIChat, Chat, Markdown, SpeechToTextButton
Data — DataGrid, DataList, PivotDataGrid, DataFilter, PickList, Pager, Tree, Scheduler, Gantt, Timeline, Spreadsheet, Charts (Line, Bar, Column, Area, Pie, Donut, Scatter, Bubble, Spider/Radar, BoxPlot, Bullet, Candlestick, OHLC, Pyramid, Funnel, Waterfall, HighLow, Range Area/Bar/Column, Step Line/Area, Stacked & Full-Stacked variants, Contour), Heatmap, Treemap, RangeNavigator, SankeyDiagram, GaugeCharts (Radial, Linear, Arc)
Forms — TextBox, TextArea, Password, Numeric, Mask, DatePicker, TimePicker, ColorPicker, Dropdown, AutoComplete, ListBox, CheckBox, RadioButtonList, Switch, Slider, Rating, FileInput, SecurityCode, SignaturePad, HtmlEditor
Layout — Card, Panel, Tabs, Accordion, Splitter, Steps, Dialog, Fieldset, Stack, Row/Column, Sidebar
Navigation — Menu, ContextMenu, PanelMenu, Breadcrumb, Link, TreeView, FabMenu, ProfileMenu
Feedback — Notification, Alert, ProgressBar, Badge, Tooltip, Skeleton, Chip, ChipList, AppearanceToggle
Utility — QRCode, Barcode, Gravatar, GoogleMap, DropZone (drag-and-drop)
Theming — 10 built-in themes with light and dark variants. Free themes: Material, Standard, Default, Humanistic, Software. Premium themes (included with Radzen Blazor Pro): Material 3, Fluent. Full CSS variable customization and a built-in theme service for runtime switching.
Browse all components with live demos →
Why choose Radzen Blazor Components?
✨ Free and open source
MIT licensed and free for commercial use. No per-developer fees, no runtime royalties. Install from NuGet or build from source.
💻 100% native Blazor
Written entirely in C#. No JavaScript framework dependencies, no wrappers.
🌱 Actively maintained
Frequent releases with new components and features. Short development cycle — we ship as soon as new features are ready instead of batching into quarterly releases.
🏢 Trusted in production
Used by developers at Microsoft, NASA, Porsche, Dell, Siemens, Nokia, DHL, HSBC, Allianz, Accenture, Deloitte, and thousands of other organizations worldwide.
Support
💬 Community Support
Visit the Radzen Community forum — 400+ active weekly users with an average response time of 2 hours.
🎯 Radzen Blazor Pro
For dedicated support and additional productivity tools, the Radzen Blazor Pro subscription includes:
- Radzen Blazor Studio — standalone Blazor IDE that provides WYSIWYG design canvas, database scaffolding, CRUD wizards, app templates, and deployment to IIS/Azure
- Radzen Blazor for Visual Studio — Blazor tooling integrated into Visual Studio 2026
- Radzen Blazor MCP — cloud-hosted MCP server that gives AI coding assistants (Cursor, Claude Code, GitHub Copilot, VS Code, Visual Studio, JetBrains) real-time access to Radzen component docs, APIs, and ready-made templates
- Premium themes and theme customization tools
- Dedicated support with guaranteed 24-hour response time and priority fixes
Run demos locally
Use Radzen.Server.sln to open and run demos as Blazor server application or Radzen.WebAssembly.sln to open and run demos as Blazor WebAssembly application. The demos require the .NET 10 SDK and should preferably be opened in VS2026.