Upload Trigger

A Button-styled InputFile trigger for file-pick-only flows — the look and feel of a Lumeo Button that opens the native file picker, without FileUpload's progress and file-list UI.

Installation

dotnet add package Lumeo

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

Usage

@using Lumeo

<UploadTrigger />

When to Use

A "Replace document" or "Upload logo" action where the file list lives elsewhere
Composer toolbars that add attachments inline
Any minimal pick affordance that should match surrounding Lumeo buttons

For full upload UI with progress, drag-and-drop, and validation use FileUpload. UploadTrigger is intentionally the minimal pick-trigger primitive.

Basic Trigger

Upload file

Variants

Default Secondary Outline Ghost

Accept Filter and Multiple

Pick images Pick a PDF

Custom Label and Icon

Replace photo

Disabled

Upload file

API Reference

UploadTrigger

File Upload — Full upload UI with progress, drag-and-drop, and validation
Button — The visual style UploadTrigger mirrors