Csharp/C Sharp by API/System.Collections.Generic/Collection

Collection.Add()

<source lang="csharp"> using System; using System.Collections.Generic; using System.Collections.ObjectModel; class MainClass {

   static void Main() {
       Collection<int> numbers = new Collection<int>();
       numbers.Add( 2 );
       numbers.Add( 9 );
       Collection<string> strings = new Collection<string>();
       strings.Add( "J" );
       strings.Add( "B" );
       Collection< Collection<int> > colNumbers = new Collection<Collection<int>>();
       colNumbers.Add( numbers );
       IList<int> theNumbers = numbers;
       foreach( int i in theNumbers ) {
           Console.WriteLine( i );
       }
   }

}

 </source>

extends Collection<T>

<source lang="csharp"> using System; using System.Collections; using System.Collections.Generic; using System.Collections.ObjectModel; using System.Text; class ConverterCollection<T> : Collection<T> {

   private Converter<T,T> convert;
   public ConverterCollection(Converter<T,T> convert)
   {
       this.convert = convert;
   }
   protected override void InsertItem(int index, T item)
   {
       base.InsertItem(index, convert(item));
   }

} public class MainClass {

   public static void Main()
   {
       ConverterCollection<string> c = new ConverterCollection<string>(
           delegate (string s) { return s.ToUpper(); });
       c.Add("Hello");
       c.Add("World!");
       foreach (string s in c)
           Console.WriteLine(s);
   }

}

 </source>

new Collection<T>()

<source lang="csharp"> using System; using System.Collections.Generic; using System.Collections.ObjectModel; class MainClass {

   static void Main() {
       Collection<int> numbers = new Collection<int>();
       numbers.Add( 2 );
       numbers.Add( 9 );
       Collection<string> strings = new Collection<string>();
       strings.Add( "J" );
       strings.Add( "B" );
       Collection< Collection<int> > colNumbers = new Collection<Collection<int>>();
       colNumbers.Add( numbers );
       IList<int> theNumbers = numbers;
       foreach( int i in theNumbers ) {
           Console.WriteLine( i );
       }
   }

}

 </source>