Plan a Blazor UI Change When asked to build a complex UI feature, plan the component decomposition first, then immediately implement it . A single monolithic page component is almost never the right answer — break the UI into focused, composable components. Planning Workflow Step 1 — Map the Visual Regions Read the request and identify every distinct visual region. Each region that has its own data, behavior, or layout responsibility is a candidate component. Draw the component tree: Rules for identifying components: - Distinct responsibility — a region owns its own state or behavior → separa…