Uno Toolkit Visualstatemanager Extensions

Uno Toolkit VisualStateManager Extensions — Agent Skill

Workflow

Docs lookup: call uno_platform_docs_search(...) first, then uno_platform_docs_fetch(sourcePath="…") using the sourcePath field from a result (a relative .md path; add the result's anchor for a section). Never pass a URL, a .html link, or a hand-built path.

Step 1: Fetch the VisualStateManager Extensions Documentation

uno_platform_docs_search("Uno Toolkit VisualStateManager extensions data driven visual state binding")

Primary documentation page:

• VisualStateManager Extensions: external/uno.toolkit.ui/doc/helpers/VisualStateManager-extensions.md

Fetch the page:

uno_platform_docs_fetch(sourcePath="external/uno.toolkit.ui/doc/helpers/VisualStateManager-extensions.md")

Key Principles (Stable)

• utu:VisualStateManagerExtensions.States — attached property bound to a string property (note: States plural)
• Supports comma, semicolon, or space separated list for multiple concurrent states from different VisualStateGroups
• When the bound property changes, the matching VisualState is activated
• Property value maps directly to VisualState name
• Eliminates need for code-behind VisualStateManager.GoToState() calls
• Important: VisualStateManager.VisualStateGroups must be defined on the same element that has the States attached property
• XAML namespace: xmlns:utu="using:Uno.Toolkit.UI"

Related Skills

• [[uno-toolkit-responsive]] — Responsive layout based on screen size