Question

This is a cursory question I can’t quite answer.

The main program

class Program{     static void Main(string[] args){         Console.WriteLine('Begin');         var myClass = new MyClass();         Util.Print(myClass.Id);         Util.Print(myClass.Server);         Util.Print(myClass.Ping);         Console.WriteLine('End');     }    } 

How do I implement the Util.Print method to get this output to the console:

Begin Id Server Ping End 

Answer 1

Assuming you don’t want to use strings, the most common answer is via an Expression – essentially emulating the missing infoof; you would have to use something like:

    Console.WriteLine('Begin');     var myClass = new MyClass();     Util.Print(() => myClass.Id);     Util.Print(() => myClass.Server);     Util.Print(() => myClass.Ping);     Console.WriteLine('End'); 

Assuming they are all properties/fields (edit added method-call support):

 public static class Util {     public static void Print<T>(Expression<Func<T>> expr)     {         WriteExpression(expr);     }     public static void Print(Expression<Action> expr) // for 'void' methods     {         WriteExpression(expr);     }     private static void WriteExpression(Expression expr)     {         LambdaExpression lambda = (LambdaExpression)expr;         switch (lambda.Body.NodeType)         {             case ExpressionType.MemberAccess:                 Console.WriteLine(((MemberExpression)lambda.Body)                     .Member.Name);                 break;             case ExpressionType.Call:                 Console.WriteLine(((MethodCallExpression)lambda.Body)                     .Method.Name);                 break;             default:                 throw new NotSupportedException();         }     } }