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Type retrieval operator in C#

  1. Forget Code
  2. C#
  3. Type retrieval operator
C# provides a way to produce the reference to the Type object, using the type retrieval operator typeof( ).

It would look like: 
  1. typeof(classname);


It will be safer since it’s checked at compile-time.
Because it eliminates the method call, it’s also more efficient.

Example: 
  1. using System;
  2. using System.Reflection;
  3.  
  4. namespace forgetCode
  5. {
  6.     static class ReflectionTest
  7.     {
  8.         public static int Length;
  9.        
  10.         public static void Write()
  11.         {
  12.             //C# checks this at compile time itself
  13.  
  14.             Type type = typeof(ReflectionTest); // Get type pointer
  15.  
  16.             FieldInfo[] fields = type.GetFields(); // Obtain all fields
  17.             foreach (var field in fields) // Loop through fields
  18.             {
  19.                 string name = field.Name; // Get string name
  20.  
  21.                 object temp = field.GetValue(null); // Get value
  22.                 if (temp is int) // See if it is an integer.
  23.                 {
  24.                     int value = (int)temp;
  25.                     Console.Write(name);
  26.                     Console.Write(" (int) = ");
  27.                     Console.WriteLine(value);
  28.                 }
  29.             }
  30.         }
  31.     }
  32.  
  33.     class Program
  34.     {
  35.         static void Main()
  36.         {
  37.             ReflectionTest.Length = 100; // Set value
  38.             ReflectionTest.Write(); // Invoke reflection methods
  39.         }
  40.     }
  41.  
  42. }