What is devexpress-blazor-treelist?

A DevExpress Blazor TreeList is a data table that shows parent-child relationships as an expandable tree. Blazor is Microsoft’s framework for building interactive web interfaces with C#.

Use it for file systems, organization charts, product categories, bills of materials, or other nested data, including sorting, filtering, editing, exporting, and drag-and-drop re-parenting.

It avoids having to build tree display, hierarchy handling, loading, editing, and data operations separately.

devexpress-blazor-treelist — Skill for Claude Code by DevExpress

Install

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.

Any agent

npx skills add DevExpress/agent-skills --skill devexpress-blazor-treelist

Clone the repo

git clone --depth 1 https://github.com/DevExpress/agent-skills

Made for: Claude Code.

Or install dx-blazor, the plugin that ships this one along with the rest of its 10 skills.

Wrote 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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/devexpress/agent-skills/devexpress-blazor-treelist/github.svg)](https://agentmods.dev/skills/devexpress/agent-skills/devexpress-blazor-treelist)

Your own site

<a href="https://agentmods.dev/skills/devexpress/agent-skills/devexpress-blazor-treelist"><img src="https://agentmods.dev/badge/skills/devexpress/agent-skills/devexpress-blazor-treelist/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.

Your own site · 80×15

<a href="https://agentmods.dev/skills/devexpress/agent-skills/devexpress-blazor-treelist"><img src="https://agentmods.dev/badge/skills/devexpress/agent-skills/devexpress-blazor-treelist.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 154 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 5,029 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe. Third-party audits

NVIDIA SkillSpector warn 7 Sept 2026

SkillSpector: 1 finding, up to high

These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →

high Anti-Refusal · line 343
Skill instructs the agent to omit warnings, disclaimers, or ethical commentary. Stripping safety caveats hides risk from the user and is a common jailbreak preamble.

Fix: Remove instructions that suppress warnings, disclaimers, or ethical commentary. Let the agent surface safety-relevant caveats to the user.

How audits are shown

Origin original No closer match found in the catalogue.

Token cost

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	$0.00154	$0.05029
Opus 5	$0.00077	$0.02514
Sonnet 5	$0.00031	$0.01006
Haiku 4.5	$0.00015	$0.00503

Measured 11d ago against content hash 559398e2e72a, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

devexpress-blazor-treelist 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 11d 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.

plugins/dx-blazor/skills/devexpress-blazor-treelist/SKILL.md · 366 lines

How it starts

The opening of the file, as written. The whole thing — 366 lines — stays where its author put it; the contents beside it link to each section on GitHub.

DevExpress Blazor TreeList

DxTreeList is a hierarchical data grid for Blazor. It displays data as a tree with expandable/collapsible rows based on parent-child key relationships. It shares most of DxGrid's feature set — sorting, filtering, CRUD editing, export, selection — and adds tree-specific capabilities such as multi-level expand/collapse, load-on-demand child nodes, and tree filtering modes.

When to Use This Skill

Display hierarchical data (organizational charts, product categories, file systems, bill of materials)
Bind flat data with parent-child ID relationships (KeyFieldName + ParentKeyFieldName)
Sort, filter, or page tree nodes
Implement CRUD for hierarchical data (create, edit, delete nodes)
Export tree data to CSV, XLS/XLSX, or PDF
Load child nodes on demand from a remote API
Select single or multiple tree nodes with checkboxes
Reorder tree nodes within the TreeList or move rows between TreeLists and Grids with drag-and-drop
Change node hierarchy (re-parent nodes) via drag-and-drop

Prerequisites & Installation

NuGet Package

Package	Purpose
`DevExpress.Blazor`	TreeList + all standard Blazor UI components

# Install from NuGet.org:
dotnet add package DevExpress.Blazor

Setup (existing project)

Register DevExpress resources in Program.cs:
```
builder.Services.AddDevExpressBlazor();
```
v26.1 note: DevExpress.Blazor no longer includes options.BootstrapVersion or DevExpress.Blazor.BootstrapVersion. Do not generate either API.

Apply a theme and add client scripts in App.razor inside <head>:

@using DevExpress.Blazor
@DxResourceManager.RegisterTheme(Themes.Fluent)
@DxResourceManager.RegisterScripts()

Add the namespace to _Imports.razor:
```
@using DevExpress.Blazor
```

Before You Start — Ask the Developer

If the host agent has a structured question-asking tool available, use it to ask these questions one at a time with clear options — for example, Claude Code's AskUserQuestion tool or GitHub Copilot's askQuestions tool. If no such tool is available, ask the questions directly in the chat response before generating code.

Read the full file on GitHub · 366 lines

Files

What ships with it

10 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.

Changes

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.

11d ago First seen · 366 lines · 154 tokens per session scan A 559398e2e72a

Subscribe to this mod's changes

devexpress-blazor-treelist is a skill published in the GitHub repository DevExpress/agent-skills (52 stars, last pushed 24d ago), licensed MIT. It adds 154 tokens to every session and 5,029 once invoked, about $0.0008 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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