Class behaves properly using overridden Equals and GetHashCode methods : Hash Code : Development Class C# Source Code

    


using System;
using System.Collections;

public class GoodCompare {
  public static void Main() {
    Name president = new Name ("A", "B");
    Name first = new Name ("C", "D");
    Console.WriteLine("The hash codes for first and president are: ");
    
    if (president.GetHashCode() == first.GetHashCode())
       Console.WriteLine("equal");
    else
       Console.WriteLine("not equal");
    
  }
}



public class Name {
  protected String first;
  protected char initial;
  protected String last;
          
  public Name(String f, String l) {
    first = f; 
    last = l; 
  }
  public Name(String f, char i, String l) : this(f,l) {
    initial = i;  
  } 
  public override String ToString() {
    if (initial == '\u0000')
       return first + " " + last;
    else  
       return first + " " + initial + " " + last;
  }
  public override bool Equals(Object o) {
    if (!(o is Name))
       return false;
    Name name = (Name)o;
    return first == name.first && initial == name.initial
             && last == name.last;
  }
  public override int GetHashCode() {
    return first.GetHashCode() + (int)initial 
                             + last.GetHashCode();
  }

}