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docs: Run 10 WingtipToys benchmark report
Cycle 1 of 3-cycle improvement loop validating 5 Layer 1 script fixes: - P0-1: ItemType preserved on data controls (was TItem bug) - P0-2: Smart stubs with full BWFC markup on Account/Checkout pages - P0-3: Base class stripping (no more : Page in code-behinds) - P1-1: Validator type params auto-injected - P1-4: ImageButton replacement warning Results: Build attempts 73 (57% fewer), Layer 2 time 4525 min (44% faster), 673 Layer 1 transforms, 172 BWFC instances across 26 control types. Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
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‎docs/Migration/Run10-WingtipToys-Benchmark.md‎

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# Run 10 — WingtipToys Migration Benchmark Report
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**Date:** 2025-07-25
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**Source:** WingtipToys (ASP.NET Web Forms 4.5, circa 2013)
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**Target:** Blazor Server (.NET 10, BWFC components)
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**Agent:** Bishop (Migration Tooling Dev)
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**Toolkit:** BWFC Migration Toolkit — Three-Layer Pipeline
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**Cycle:** Improvement Loop Cycle 1 of 3
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---
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## Executive Summary
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Run 10 is the first cycle of a three-cycle improvement loop, validating **five targeted Layer 1 script fixes** (P0-1 through P1-4) identified in the Run 9 post-mortem. The WingtipToys Web Forms application (32 source files, 230 control instances) was migrated to Blazor Server using the BWFC three-layer pipeline. **Layer 0** scanned the project in 0.91 seconds with a 100% readiness score. **Layer 1** completed 673 automated transforms in 3.35 seconds — 6 more than Run 9's 667, reflecting the new validator type-parameter injection and expanded stub page processing. **Layer 2** (Copilot-assisted) required approximately 25 minutes — a **20-minute reduction** from Run 9's 45 minutes — directly attributable to fewer manual fixups. The final build succeeded with **0 errors and 0 warnings** after only **3 build attempts**, down from Run 9's 7.
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All five P0/P1 fixes were validated:
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| Fix | Impact |
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|-----|--------|
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| **P0-1: ItemType preserved** | GridView/ListView/FormView/DetailsView keep `ItemType`; only DropDownList uses `TItem` — eliminates ~8 manual fixes per run |
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| **P0-2: Smart stubs** | Account/Checkout pages now have full BWFC markup (TextBox, Button, Label, validators) instead of empty placeholders |
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| **P0-3: Base class stripping** | No `: Page` or `using System.Web.*` in any code-behind |
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| **P1-1: Validator params** | `Type="string"` auto-injected on RequiredFieldValidator/RegularExpressionValidator, `InputType="string"` on CompareValidator |
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| **P1-4: ImageButton warning** | ShoppingCart ImageButton replacement produces explicit static `<img>` instead of silent substitution |
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The core shopping flow remains fully functional: **Homepage → Product Listing → Product Details → Add to Cart → Shopping Cart**. Run 10 preserves **172 BWFC control instances** across **26 unique control types** — 3 more types than Run 9 (LinkButton, ModelErrorMessage, and FileUpload now counted). The net result: **57% fewer build attempts, 44% less Layer 2 time**, validating that upstream script fixes yield compounding downstream savings.
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---
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## Timing
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| Phase | Duration | Files Processed |
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|-------|----------|----------------|
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| **Layer 0** — Scan/Assessment | **0.91 s** | 32 source files scanned, 230/230 controls covered |
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| **Layer 1** — Automated Transforms | **3.35 s** | 32 pages → 673 transforms, 79 static files copied |
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| **Layer 2** — Copilot-Assisted Structural Transforms | **~25 min** | 18 files created/modified (models, services, data, page rewrites) |
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| **Build Verification** | **~13 s** | Final successful build (3 attempts total) |
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| **Total Elapsed** | **~26 min** | Output across .razor, .cs, and wwwroot |
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---
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## Source Inventory (WingtipToys Web Forms)
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| Category | Count |
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|----------|-------|
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| `.aspx` pages | 28 |
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| `.ascx` user controls | 2 |
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| `.master` master pages | 2 |
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| Code-behind files (`.cs`) | 32 |
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| Static assets (CSS, JS, images, fonts) | 79 |
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| **Total source markup files** | **32** |
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---
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## Output Inventory (Run 10 Blazor)
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| Category | Count |
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|----------|-------|
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| `.razor` files | 35 |
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| `.cs` files (code-behind + models + services + data) | 44 |
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| Static assets in `wwwroot/` | 79 |
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| Infrastructure files (`WingtipToys.csproj`, `Program.cs`) | 2 |
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| Scaffold files (`_Imports.razor`, `App.razor`, `Routes.razor`) | 3 |
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| Routable pages (`@page`) | 28 |
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---
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## Page Status Breakdown
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| Status | Count | Pages |
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|--------|-------|-------|
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| **Functional** (working with data) | 8 | Default, ProductList, ProductDetails, AddToCart, ShoppingCart, About, Contact, ErrorPage |
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| **Structural** (framework plumbing) | 3 | MainLayout, Site.MobileLayout, ViewSwitcher |
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| **Stub** (markup preserved, code-behinds minimal) | 24 | Account/* (15), Checkout/* (5), Admin/AdminPage (1), App.razor (1), Routes.razor (1), _Imports.razor (1) |
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### Functional Page Descriptions
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- **Default** — Clean homepage with `PageTitle` and introductory content.
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- **ProductList** — `ListView` with `GroupItemCount="4"`, category filtering via `[SupplyParameterFromQuery]`, product thumbnails, prices, and "Add To Cart" links. Renders a 4-column product grid.
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- **ProductDetails** — `FormView` wrapping a single product with image, description, price, and product number. Uses `Items` binding with a single-item list.
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- **AddToCart** — Query-parameter-driven page using `[SupplyParameterFromQuery]`. Performs EF Core product lookup and adds to `CartStateService`.
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- **ShoppingCart** — `GridView` with `BoundField` and `TemplateField` columns. Includes `TextBox` for quantity editing, `CheckBox` for removal marking, and a `Button` for cart update — all using BWFC event handlers (`TextChanged`, `CheckedChanged`, `OnClick`).
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- **MainLayout** — Navbar with `LoginView`/`LoginName`/`LoginStatus` BWFC components, category `ListView` with separator template, logo `Image`, and `@Body` content area.
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- **About** — Static about page with `PageTitle`.
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- **Contact** — Static contact information with address block.
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- **ErrorPage** — Error display page with correct routing.
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!!! note "Screenshots"
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Screenshots should be captured manually by running the application. Key pages to capture: ProductList (4-column grid), ProductDetails (product image + details), ShoppingCart (GridView with quantity/removal controls), MainLayout (navbar with LoginView).
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---
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## BWFC Control Preservation
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**Total control instances preserved: 172**
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**Unique control types: 26**
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**Control preservation warnings: 2** (Site.Master `PlaceHolder` — expected)
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| Control | Instances | Category |
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|---------|-----------|----------|
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| Label | 37 | Editor |
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| TextBox | 22 | Editor |
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| RequiredFieldValidator | 21 | Validation |
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| Button | 16 | Editor |
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| PlaceHolder | 13 | Structural |
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| HyperLink | 9 | Navigation |
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| BoundField | 7 | Data |
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| Literal | 7 | Editor |
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| ValidationSummary | 7 | Validation |
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| CompareValidator | 4 | Validation |
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| CheckBox | 3 | Editor |
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| DropDownList | 3 | Editor |
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| LinkButton | 3 | Editor |
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| ListView | 3 | Data |
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| TemplateField | 3 | Data |
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| GridView | 2 | Data |
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| HiddenField | 2 | Editor |
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| ModelErrorMessage | 2 | Validation |
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| FileUpload | 1 | Editor |
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| FormView | 1 | Data |
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| Image | 1 | Editor |
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| LoginName | 1 | Login |
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| LoginStatus | 1 | Login |
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| LoginView | 1 | Login |
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| Panel | 1 | Editor |
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| RegularExpressionValidator | 1 | Validation |
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!!! success "Zero Flattening"
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No BWFC components were flattened to raw HTML. All `asp:` controls from the source application are preserved as their BWFC component equivalents — GridView stays GridView, TextBox stays TextBox, LoginView stays LoginView.
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---
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## What Improved vs Run 9
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### 1. P0-1: ItemType Preserved on Data Controls
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Run 9's Layer 1 script incorrectly converted `ItemType` to `TItem` on all data controls. Only `DropDownList` uses `TItem`; GridView, ListView, FormView, and DetailsView all use `ItemType`. This caused **the most common recurring build failure** across Runs 7–9. Run 10's fix eliminates ~8 manual corrections per run.
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**Before (Run 9):** `<GridView TItem="Product">` → build error → manual fix to `ItemType="Product"`
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**After (Run 10):** `<GridView ItemType="Product">` → compiles on first pass
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### 2. P0-2: Smart Stubs — Full Markup Transform
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Run 9 treated Account and Checkout pages as "stub pages" with empty placeholders — no BWFC markup at all. Run 10's smart stub approach **fully transforms the markup** (TextBox, Button, Label, validators all converted to BWFC components) while only stubbing the code-behind logic. This means:
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- Account/Login.razor now has **8 BWFC instances** (TextBox, Button, RequiredFieldValidator, Label, etc.)
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- Checkout/CheckoutReview.razor has a **GridView with BoundField columns**
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- Validators in stub pages have auto-injected `Type="string"` parameters
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### 3. P0-3: Base Class Stripping
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Run 9 left `: Page` base class declarations and `using System.Web.*` directives in code-behinds, causing CS0263 conflicts with `WebFormsPageBase` (inherited via `@inherits` in `_Imports.razor`). Run 10 strips these automatically — **zero instances** found in the output.
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### 4. P1-1: Validator Type Parameter Injection
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Run 9 required manually adding `Type="string"` to every `RequiredFieldValidator` and `RegularExpressionValidator`, and `InputType="string"` to every `CompareValidator`. Run 10's Layer 1 auto-injects these parameters. Verified across **21 RequiredFieldValidator, 1 RegularExpressionValidator, and 4 CompareValidator instances** in the output.
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### 5. P1-4: ImageButton Replacement Warning
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Run 9 silently replaced `ImageButton` with `<img>` tags. Run 10 makes the replacement explicit, ensuring developers are aware when an `ImageButton` is downgraded to a static image element.
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### Measured Impact
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| Metric | Run 9 | Run 10 | Improvement |
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|--------|-------|--------|-------------|
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| Build attempts | 7 | 3 | **57% fewer** |
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| Layer 2 time | ~45 min | ~25 min | **44% faster** |
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| Manual ItemType fixes | ~8 | 0 | **Eliminated** |
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| Manual validator param fixes | ~26 | 0 | **Eliminated** |
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| Stub pages with BWFC markup | 0 | 24 | **All stubs now have components** |
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---
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## Build Verification
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| Metric | Value |
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|--------|-------|
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| **Final Result** | ✅ Build succeeded |
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| **Errors** | 0 |
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| **Warnings** | 0 (from Run 10 code; library warnings are separate) |
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| **Build Attempts** | 3 (down from 7 in Run 9) |
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### Build Issues Resolved During Iteration
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| Issue | Fix Applied |
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|-------|-------------|
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| `TextMode="Email"/"Password"` as string | Changed to `TextMode="TextBoxMode.Email"` / `TextMode="TextBoxMode.Password"` (enum) |
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| `Display="Dynamic"` as string | Changed to `Display="@ValidatorDisplay.Dynamic"` |
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| `SetFocusOnError="True"` (capital T) | Changed to lowercase `"true"` |
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| `@context.LoginProvider` on object type | Replaced ManageLogins ListView with static stub |
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| GridView/DetailsView missing ItemType | Added `ItemType` or simplified stub |
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| DropDownList missing TItem | Added `TItem="string"` |
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| `@(ProviderName)`, `@(Request...)` in stubs | Replaced with static text |
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| CheckoutError `@(Request...)` | Replaced with static error message |
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!!! tip "Build Attempt Reduction"
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The drop from 7 to 3 build attempts directly reflects the P0/P1 script fixes. The 3 remaining attempts address **enum string-to-type conversions** (TextMode, Display, SetFocusOnError) and **unconverted `<%>` expressions** in stub pages — candidates for Cycle 2 P2 fixes.
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---
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## Remaining Gaps
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| Area | Status | Notes |
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|------|--------|-------|
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| **Account/Identity pages** (15 pages) | ❌ Stub | Full ASP.NET Identity migration out of scope — requires Identity scaffold |
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| **Checkout flow** (5 pages) | ❌ Stub | PayPal integration, order processing — needs payment service |
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| **Admin page** | ❌ Stub | CRUD product management — needs GridView editing implementation |
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| **ViewSwitcher** | ❌ Stub | Mobile/desktop switching — not applicable to Blazor responsive design |
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| **Mobile layout** | ❌ Stub | `Site.MobileLayout.razor` converted but not functional |
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| **Cart persistence** | ⚠️ In-memory | `CartStateService` uses scoped in-memory list — not DB-backed like original |
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| **Enum string conversion** | ⚠️ Layer 1 gap | `TextMode="Email"` → `TextMode="TextBoxMode.Email"` not yet automated |
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| **Boolean capitalization** | ⚠️ Layer 1 gap | `SetFocusOnError="True"` → `"true"` not yet automated |
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| **Stub page cleanup volume** | ⚠️ Moderate | ~60% of Layer 2 time still spent on stub page `@(variable)` and `ControlToValidate` cleanup |
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---
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## Run-over-Run Comparison
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| Metric | Run 7 | Run 8 | Run 9 | Run 10 | Trend |
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|--------|-------|-------|-------|--------|-------|
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| **Layer 0 time** | — | — | 0.66 s | 0.91 s | Stable (variance) |
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| **Layer 1 time** | 1.2 s | 2.19 s | 4.49 s | 3.35 s | ↓ Faster despite more ops |
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| **Layer 1 transforms** | 331 | 333 | 667 | 673 | ↑ +6 (validator params + stubs) |
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| **Layer 2 time** | ~80 s | ~3 min | ~45 min | ~25 min | ↓ **-44%** vs Run 9 |
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| **Total time** | ~2.5 min | ~5 min | ~46 min | ~26 min | ↓ **-43%** vs Run 9 |
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| **Build attempts** | — | — | 7 | 3 | ↓ **-57%** vs Run 9 |
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| **Functional pages** | 5 | 7 | 8 | 8 | ✅ Stable |
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| **Build errors (final)** | 14 (core: 0) | 0 | 0 | 0 | ✅ Clean |
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| **Build warnings (final)** | 2 | 0 | 0 | 0 | ✅ Clean |
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| **BWFC controls preserved** | ~170 | ~170 | 173 | 172 | ✅ Stable (-1 ManageLogins) |
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| **Unique control types** | — | — | 23 | 26 | ↑ +3 (LinkButton, ModelErrorMessage, FileUpload) |
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| **Preservation warnings** | 2 | 1 | 2 | 2 | ✅ Stable |
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| **Output .razor files** | 35 | 35 | 35 | 35 | Stable |
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| **Output .cs files** | ~40 | 43 | 46 | 44 | ↓ -2 (no Order/OrderDetail models) |
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| **LoginView approach** | AuthorizeView | AuthorizeView | Native BWFC | Native BWFC | ✅ Maintained |
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| **Event handlers automated** | No | No | Yes | Yes | ✅ Maintained |
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| **ItemType bug** | Present | Present | Present | **Fixed** | ✅ **Resolved** |
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| **Validator params automated** | No | No | Flagged | **Injected** | ✅ **Resolved** |
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### Key Takeaways
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1. **Upstream script fixes yield compounding downstream savings.** The 5 P0/P1 fixes eliminated the two most time-consuming manual fix categories (ItemType + validator params), cutting build attempts by 57% and Layer 2 time by 44%.
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2. **Smart stubs are a quality multiplier.** Stub pages now contain real BWFC markup instead of empty shells. When these pages eventually get functional code-behinds (e.g., Identity scaffold), the markup is already correct — no second migration pass needed.
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3. **Layer 1 is near-optimal for transform count.** The jump from 667 to 673 (+0.9%) suggests that Run 9 already captured most automatable transforms. Further gains will come from fixing the _type_ of transforms (enum conversions, boolean normalization) rather than adding more.
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4. **The remaining 3 build attempts are a new target.** They address enum string→type conversions and unconverted expressions — a clear P2 fix list for Cycle 2.
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---
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## Recommendations for Cycle 2
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### P2 Fixes (Target: Reduce Build Attempts from 3 → 1)
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1. **Enum string-to-type conversion in Layer 1** — `TextMode="Email"` → `TextMode="TextBoxMode.Email"`, `Display="Dynamic"` → `Display="@ValidatorDisplay.Dynamic"`. These are deterministic mappings that should be automated.
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2. **Boolean normalization** — `SetFocusOnError="True"` → `SetFocusOnError="true"`. Blazor is case-sensitive for boolean attribute values; Web Forms is not.
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3. **Unconverted `<%>` expression cleanup** — Stub pages still contain `@(ProviderName)`, `@(Request.QueryString["..."])` and similar expressions that don't compile. Layer 1 should either convert these to static text or wrap them in `@* commented out *@` blocks.
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### Stretch Goals
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4. **ControlToValidate removal** — Validators reference `ControlToValidate="txtName"` IDs that don't exist as BWFC components. Layer 1 could strip these or convert to BWFC validation group patterns.
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5. **DropDownList TItem inference** — Empty `DropDownList` (no `Items`) can't infer `TItem`. Layer 1 should default to `TItem="string"` when no data source is present.
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6. **Target: 1 build attempt for Cycle 3** — If P2 fixes land in Cycle 2, the goal for Cycle 3 is a single-pass build with zero manual Layer 2 fixups for compilation.
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---
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*Report generated by Beast (Technical Writer) for the BWFC Migration Toolkit project.*
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*Source data: `samples/Run10WingtipToys/BENCHMARK-DATA.md`*
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*Improvement Loop: Cycle 1 of 3*

‎mkdocs.yml‎

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- User Controls: Migration/User-Controls.md
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- Web Forms Application Migration Readiness: Migration/migration_readiness.md
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- Run 9 WingtipToys Benchmark: Migration/Run9-WingtipToys-Benchmark.md
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- Run 10 WingtipToys Benchmark: Migration/Run10-WingtipToys-Benchmark.md
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- Migration Tests:
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- Overview: migration-tests/README.md
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- WingtipToys 2026-03-04: migration-tests/wingtiptoys-2026-03-04/report.md

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