Lumeo

SplitButton

A button split into a main action half and a chevron half that opens a dropdown menu of secondary actions.

Installation

dotnet add package Lumeo

One-time app setup (AddLumeo(), CSS & JS) is covered in the installation guide.

Usage

@using Lumeo

<SplitButton />

When to Use

  • There is one dominant primary action and several less common alternatives (e.g. Save vs. Save and Publish).
  • Reduce button count in toolbars while still exposing all relevant actions.
  • Replace a plain button + separate dropdown when both should share the same visual weight.

API Reference

SplitButton

  • Button — A standard single-action trigger.
  • DropdownButton — A button that opens a dropdown menu without a separate primary action.
  • ButtonGroup — Groups multiple related buttons into a segmented bar.