// Fig. 9.20: InternalAccessTest.cs
// Members declared internal in a class are accessible by other classes 
// in the same assembly.
using System;

public class InternalAccessTest 
{
   public static void Main( string[] args )
   {
      InternalData internalData = new InternalData();

      // output String representation of internalData
      Console.WriteLine( "After instantiation:\n{0}", internalData );

      // change internal access data in internalData
      internalData.number = 77;                           
      internalData.message = "Goodbye";   

      // output String representation of internalData
      Console.WriteLine( "\nAfter changing values:\n{0}", internalData );
   } // end Main
} // end class InternalAccessTest

// class with internal access instance variables
class InternalData 
{
   internal int number; // internal-access instance variable   
   internal string message; // internal-access instance variable

   // constructor
   public InternalData() 
   { 
      number = 0; 
      message = "Hello";
   } // end InternalData constructor

   // return InternalData object string representation
   public override string ToString() 
   {
      return string.Format( 
         "number: {0}; message: {1}", number, message );
   } // end method ToString
} // end class InternalData


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