#145 · Programming Language Tools Developer Tool

C# Checker

Check C# source code for delimiter errors, namespace and using-directive problems, malformed types, properties, methods, regions, and common naming inconsistencies without sending code to a server.

Developer Input

Fast C# source checks

C# source code

using System;
using System.Collections.Generic;

namespace Demo;

public class UserService
{
    public int Count { get; private set; }
    public void Add(string name) => Count++;
}

Processing mode

Maximum parameters

params

Check naming conventions Detect duplicate using Check regions Auto-run while typing

How to use this developer tool

Paste or type the source code in the input editor.
Select the processing mode and adjust the numeric threshold or indentation option.
Enable the checks needed for this task.
Run the tool, review the status and report, then copy or download the result.

What this developer tool does

C# source check report is produced locally in your browser and remains copy-ready.

Masks literals and comments, checks paired symbols and preprocessor regions, then scans namespace, using, type, member, and naming patterns.

This checker identifies common source-level mistakes but does not execute Roslyn or compile the project.

Example

Input: Paste the included sample source. Output: Run C# Checker to produce a declaration report, validation result, formatted source, conversion, or generated template. The sample is executable and can be replaced with your own code.

Tips for better output

Use complete source files when possible so declarations and scopes can be detected reliably.
Run formatter or viewer output through the relevant validator before committing changes.
For compiler-authoritative results, verify the final code with the target JDK or .NET SDK.

FAQ

How do I use a C# Checker online?

Paste your C# source, select the required mode and options, then run the tool to produce a copy-ready result and analysis report.

Can this C# Checker process code without uploading it?

Yes. Processing runs locally in the browser, so the source is not sent to a server by this page.

What errors can the C# Checker detect?

The tool detects the common structural, delimiter, declaration, formatting, or conversion issues relevant to its selected mode.

Does the C# Checker support large source files?

It is optimized for large pasted files and debounces automatic processing, though extremely large or generated files may be better handled in an IDE.

Is the C# Checker a replacement for a compiler?

No. It is a fast browser-based development aid; compile with the appropriate JDK or .NET SDK for authoritative results.

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Analysis modules

Module	Purpose
Lexical masking	Protects comments and literals during structural analysis.
Source analysis	C# source check report.
Live metrics	Characters, lines, bytes, status, and measured processing time.

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