C# genrics

using arrays we persist either key or values of the dictionary, then how can we use array to persist both keys & values combinedly???

using System;
using System.Collections.Generic;
using System.Text;

namespace ConsoleApplication1
{
  class Program
  {
    static void Main(string[] args)
    {
      MyDictionaryElement[] MyDictionary = new MyDictionaryElement[10];
      MyDictionary[0] = new MyDictionaryElement() { Key = 0, Value = "Zerro" };
      //... and so on
    }
  }
  class MyDictionaryElement
  {
    public object Key { set; get; }
    public object Value { set; get; }
  }
}