Taming a Growing .NET Solution with Rider’s Solution‑Wide Inspections and Code‑Cleanup Profiles

Why the IDE Should Be Your First Line of Defense

When a C# solution grows from a handful of projects to dozens, naming inconsistencies, hidden dependencies, and stale async patterns become hard‑to‑spot bugs that slow onboarding and inflate code‑review churn. The problem is not the code itself but the lack of a lightweight, local feedback loop that keeps the codebase tidy before it hits CI.

JetBrains Rider offers two complementary mechanisms that solve this problem without changing the build pipeline: solution‑wide inspections and configurable Code‑Cleanup profiles. Together they provide fast, incremental feedback on style and architectural rules, and let you enforce a shared coding standard across the team.

How Rider’s Solution‑Wide Inspections Work

Rider’s inspections are powered by Roslyn analyzers. They run on the fly as you type, but you can also trigger a full run across the entire solution. Unlike static‑analysis tools that require a build, inspections are lightweight and incremental. They surface issues in the IDE’s Inspection Results window, each with a severity level (Error, Warning, Info) and a quick‑fix or context action.

Key steps to enable and tune inspections:

1. Open Settings | Editor | Inspections.
2. Navigate to C# | General | Code style and enable the rules you care about (e.g., Use async suffix, Remove unused using, File header).
3. Adjust the severity to Warning for new rules to avoid breaking builds.
4. Run Analyze | Inspect Code | Whole Solution to populate the results panel.

When you click an inspection, Rider shows the offending code and a quick‑fix. You can apply the fix locally or batch‑apply it to all instances.

Defining a Shared Code‑Cleanup Profile

Code‑Cleanup profiles let you bundle a set of formatting and refactoring rules into a single, reusable configuration. A typical profile for a large solution might enforce:

• File header template (copyright, license)
• Using directive order (System first, then external, then project)
• Async method naming (suffix Async)
• Removal of unused using statements

To create one:

1. Navigate to Settings | Editor | Code Style | Code Cleanup.
2. Click + New Profile and name it Team‑Standard.
3. Check the boxes for the rules above. For custom header, click File header and paste your template.
4. Click Save and Apply.
5. Export the profile via Export… to a .editorconfig or .editorconfig‑profile file so it can be checked into source control.

Concrete Worked Example

Suppose you want to enforce that all public methods ending with Async are truly asynchronous. Follow these steps:

1. Enable the Prefer async suffix inspection and set severity to Warning.
2. Open the Team‑Standard profile and add a quick‑fix rule: Rename method to *Async.
3. Open a folder (e.g., src/Services) and run Analyze | Inspect Code | Folder.
4. In the Inspection Results window, locate the Prefer async suffix entries.
5. Right‑click the first result and choose Apply Quick Fix to All Instances. Rider will rename methods and adjust call sites.
6. Commit the changed files and the updated .editorconfig to the repository.

After this run, any new method you write will automatically get the Async suffix, and the IDE will flag missing ones.

Trade‑Offs and Practical Limits

While powerful, solution‑wide inspections can tax the IDE:

• Memory & Indexing – Large solutions (10k+ files) require more RAM. If Rider stalls, consider disabling non‑essential inspections or running on a more powerful workstation.
• False Positives – Custom rules may misinterpret domain‑specific patterns. Tweak severity or add #pragma warning disable pragmas locally for known exceptions.
• Profile Synchronization – Code‑Cleanup profiles are local by default. Share them via Git by committing the .editorconfig and .editorconfig‑profile files.
• CI Enforcement – These tools run only in the IDE. If you need hard enforcement, integrate a Roslyn analyzer into the build pipeline.

Actionable Steps for Your Team

1. Create a minimal Team‑Standard profile covering the most painful rules (header, using order, async suffix).
2. Commit the profile and a .editorconfig to source control.
3. Instruct developers to run Analyze | Inspect Code | Whole Solution before each PR.
4. Add a pre‑commit hook that runs dotnet format with the same profile to catch regressions early.
5. Iterate: add more inspections as the codebase matures, but keep the initial set lightweight.

By making Rider the first gatekeeper of style and architecture, you reduce the cognitive load on reviewers, accelerate onboarding, and keep your large .NET solution healthy without changing your CI pipeline.

Next Steps

Explore Rider’s Architecture tool window to visualize hidden project dependencies—often the root cause of coupling issues. Combine that with the inspection workflow to address both style and structural problems in one go.