# Loader **Path:** Components/Feedback [Back to Documentation Index](http://rubicblazor.skyconis.com/docs.md) --- Loader RbLoader coordinates loading feedback with content rendering. It can fully replace content until data is ready, or keep the content mounted and draw a loading overlay on top with AlwaysRenderContent . Basic Usage Toggle between loading state and ready content with the Ready parameter. Show code Ready Always Render Content Keep the content visible and show the loader as an overlay while background work continues. Show code Ready Customer Tickets 24 items Payment reconciliation is pending final confirmation. Arabic localization review was completed this morning. Supplier import job finished with 2 warnings. Custom Loading Content Replace the default spinner with your own loading message or progress UI. Show code Ready Preparing workspace Draft data and validation summaries are being collected. LoadAsync Helper Drive a complete simulated reload flow through the component reference and LoadAsync . Show code Reload Simulated Data Last loaded value: A-1024 Live Snapshot This block stays mounted while LoadAsync simulates a refresh cycle. Snapshot token: A-1024 API RbLoader A loading-state wrapper that either replaces child content or overlays it with a loading surface. Ready / ReadyChanged Controls whether the wrapped content is considered ready for display. Parameters bool Ready Set false while data is loading and true when the content is ready. EventCallback ReadyChanged Raised after SetReadyAsync updates the component state. AlwaysRenderContent Keeps child content mounted even while the loading overlay is active. Parameters bool AlwaysRenderContent = false Useful when layout continuity matters or when partially loaded content should remain visible. LoadingContent Optional custom loading UI that replaces the built-in spinner. Parameters RenderFragment LoadingContent = null Render custom text, alerts, skeletons, or progress indicators here. ChildContent The wrapped content template. Parameters RenderFragment ChildContent Receives the current loader instance as template context when needed. SetReadyAsync(bool isReady) Imperatively updates the ready state and triggers ReadyChanged . Parameters bool isReady New ready flag to apply. Return Task Completes after the render request and callback dispatch are queued. LoadAsync(Func loader) Convenience helper that wraps an async operation with automatic loading state transitions. Parameters Func loader Async work to execute between the internal ready=false and ready=true transitions. Return Task Completes after the wrapped loader function finishes and ready state is restored. ✕ Contents