Dev Tools for .NET

Small tools for the fiddly parts of .NET configuration and formatting. Each one copies how the real library behaves, and is tested against that library's own output.

• Cron expression tester
  NCrontab, Azure Functions, Hangfire (Cronos) and Quartz.NET: next run times and a plain-English reading.
• appsettings.json ⇄ environment variables
  Double-underscore names for Docker, Kubernetes, Azure App Service, bash and PowerShell, and back.
• SQL Server connection string builder
  Microsoft.Data.SqlClient keywords, quoting, Encrypt and Entra ID authentication.
• PostgreSQL connection string builder
  Npgsql keywords: SSL Mode, pooling, timeouts, search path.
• DateTime format string tester
  Standard and custom format strings, invariant, en-US and en-GB, as .NET formats them.
• TimeSpan format string tester
  "c", "g", "G" and custom TimeSpan formats like hh:mm:ss.
• JSON to C# records
  Records or classes for System.Text.Json, with nullable and JsonPropertyName handled.

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Runs in your browser: nothing you paste is sent anywhere. Not affiliated with Microsoft, the .NET Foundation or the library authors.