Log Queries executed by Entity Framework DbContext

Question

I\'m using EF 6.0 with LINQ in MVC 5 project. I want to log all the SQL queries executed by the Entity Framework DbContext for debugging/performance-measurement purpose.

Answer 1

If you've got a .NET Core setup with a logger, then EF will log its queries to whichever output you want: debug output window, console, file, etc.

You merely need to configure the 'Information' log level in your appsettings. For instance, this has EF logging to the debug output window:

"Logging": {
  "PathFormat": "Logs/log-{Date}.txt",
  "IncludeScopes": false,
  "Debug": {
    "LogLevel": {
      "Default": "Information",
      "System": "Information",
      "Microsoft": "Information"
    }
  },
  "Console": {
    "LogLevel": {
      "Default": "Information",
      "System": "Warning",
      "Microsoft": "Warning"
    }
  },
  "File": {
    "LogLevel": {
      "Default": "Information",
      "System": "Warning",
      "Microsoft": "Warning"
    }
  },
  "LogLevel": {
    "Default": "Information",
    "System": "Warning",
    "Microsoft": "Warning"
  }
}