Call a method from Static Class passing Type of Dynamic variable with Generics

Question

How can i call a method from a static class passing a type of dynamic in generic. Here is my static class:

public static class Log<T>
{
    private readonly static ILog Logger = LogManager.GetLogger(typeof(T));

    public static void LogInfo(string message)
    {
        Logger.Info(message);
    }
}

I want to call LogInfo like this:

Log<myObject.GetType()>.LogInfo("Some String");

My question is about how to pass a type of myObject in Generic, because the type of this object is dynamic.

It's not at all clear what you mean by "passing a type of dynamic in generic". — Jon Skeet
– Jon Skeet, Commented Jun 17, 2011 at 13:06
You have an interface named ILog and a class named Log that doesn't implement ILog. I'd advise against that. — jason
– jason, Commented Jun 17, 2011 at 13:27

jason · Accepted Answer · 2011-06-17 17:55:02Z

I want to call LogInfo like this:

Log<myObject.GetType()>.LogInfo("Some String");

Why? Why don't you just do this:

public static class Log {
     private static readonly Dictionary<Type, ILog> loggers =
         new Dictionary<Type, ILog>();

     public static void LogInfo(Type type, string message) {
          var logger = Log.GetLoggerForType(type);
          logger.Info(message);
     }

     public static void LogInfo<T>(string message) {
          LogInfo(typeof(T), message);
     }

     private static ILog GetLoggerForType(Type type) {
          ILog logger;
          if(!loggers.TryGetValue(type, out logger)) {
               logger = LogManager.GetLogger(type);
               loggers.Add(type, logger);
          }
          return logger;
     }
}

Note that this is not, Not, NOT thread safe. I wanted to communicate the idea.

Then:

Log<myObject.GetType()>.LogInfo("Some String");

can be replaced by

Log.LogInfo(myObject.GetType(), "Some String");

or you can even go one step further and add an overload that allows you to say

Log.LogInfo(myObject, "Some String");

(just call object.GetType in LogInfo).

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