Hashtable to array

In this chapter you will learn:

How to convert C# Hashtable to an array

Convert to array

The following code shows how to copy the keys from Hashtable into an array using the CopyTo() method and then display the array contents.

using System;/*from  j a  v  a2s .c o  m*/
using System.Collections;

class MainClass
{

  public static void Main()
  {
    Hashtable myHashtable = new Hashtable();

    myHashtable.Add("AL", "Alabama");
    myHashtable.Add("CA", "California");
    myHashtable.Add("FL", "Florida");
    myHashtable.Add("NY", "New York");
    myHashtable.Add("WY", "Wyoming");

    foreach (string myKey in myHashtable.Keys)
    {
      Console.WriteLine("myKey = " + myKey);
    }
    foreach(string myValue in myHashtable.Values)
    {
      Console.WriteLine("myValue = " + myValue);
    }
    
    Console.WriteLine("Copying keys to myKeys array");
    string[] myKeys = new string[5];
    myHashtable.Keys.CopyTo(myKeys, 0);
    
    for (int counter = 0; counter < myKeys.Length; counter++) {
      Console.WriteLine("myKeys[" + counter + "] = " + myKeys[counter]);
    }
  }
}