Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx skills add managedcode/dotnet-skills --skill maui-collectionviewgit clone --depth 1 https://github.com/managedcode/dotnet-skillsWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/managedcode/dotnet-skills/maui-collectionview)<a href="https://agentmods.dev/skills/managedcode/dotnet-skills/maui-collectionview"><img src="https://agentmods.dev/badge/skills/managedcode/dotnet-skills/maui-collectionview/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/managedcode/dotnet-skills/maui-collectionview"><img src="https://agentmods.dev/badge/skills/managedcode/dotnet-skills/maui-collectionview.svg" alt="Reviewed on agentmods" width="80" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00205 | $0.04585 |
| Opus 5.5 | $0.00082 | $0.01834 |
| Sonnet 5.5 | $0.00041 | $0.00917 |
| Haiku 4.5 | $0.00020 | $0.00458 |
Grade A, and why
maui-collectionview scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2mo ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
This is a copy
100% identical to maui-collectionview — 0 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.
How it starts
The opening of the file, as written. The whole thing — 471 lines — stays where its author put it; the contents beside it link to each section on GitHub.
CollectionView — .NET MAUI
CollectionView is the primary control for displaying scrollable lists and grids of data in .NET MAUI. It replaces ListView with better performance, flexible layouts, and no ViewCell requirement.
When to Use
- Displaying a scrollable list or grid of data items
- Binding a collection of objects to a templated item layout
- Adding selection (single or multiple), grouping, or pull-to-refresh
- Implementing infinite scroll / incremental loading
- Showing swipe actions on list items
- Displaying an empty state when no data is available
When Not to Use
- Static layouts with a fixed number of items — use
GridorStackLayoutdirectly - Map pin lists — use the
Microsoft.Maui.Controls.MapsNuGet package - Table-based data entry forms — use standard form controls
- Simple text-only lists with no interaction — consider
BindableLayouton aStackLayout
Scope Control — Answer Only What Was Asked
This skill is a reference you consult, not a checklist you apply. Most requests need one or two sections from it. Pulling in the rest makes the answer worse.
Stop conditions — do NOT act when:
- The user asked a narrow question. Answer that question only. Do not append grouping, swipe actions, empty views, snap points, or performance tips that were not asked about.
- The user's existing code already works. Do not rewrite working markup to match the examples here. Point out a concrete defect; if there is none, say so and answer the question that was asked.
- The change is stylistic. Renaming, reordering attributes, or restructuring a template that already behaves correctly is churn, not a fix.
- The control isn't
CollectionView.CarouselView,BindableLayout, andListView-in-maintenance code have different rules. Do not rewriteListViewcode the user did not ask about — but if they ask which control to use, or are migrating from Xamarin.Forms, recommendCollectionView(see Migrating from ListView). - The problem is really a binding, DI, or navigation problem that happens to
involve a list — defer to
maui-data-binding,maui-dependency-injection, ormaui-shell-navigation.
What ships with it
2 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 2mo ago First seen · 471 lines · 205 tokens per session scan A decaa88a42e8
maui-collectionview is a skill published in the GitHub repository managedcode/dotnet-skills (496 stars, last pushed yesterday), licensed MIT. It adds 205 tokens to every session and 4,585 once invoked, about $0.0008 per session on Opus 5.5. A static security scan graded it A with 0 findings. It is 100% identical to maui-collectionview, differing in 0 lines, and is treated as a copy.
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