C#

using System;

class App {
   unsafe static void Main() {

      // Construct an array consisting of 5 Int32 elements 
      Int32[] arr = new Int32[] { 1, 2, 3, 4, 5 };

      // Obtain a pointer to the array's 0th element
      fixed (Int32* element = &arr[0]) {

         // Iterate through each element in the array
         // NOTE: The code below has a bug!
         for (Int32 x = 0, l = arr.Length; x <= l; x++) {
            Console.WriteLine(element[x]);
         }
      }
   }
}

//this initializes only the array, not the elements<br />
_interfaces = new IMyInterface[10];<br />
//now you have an array filled with 10 "null" values

MenuItem mi = new MenuItem();
mi.Click += new System.EventHandler(this.MenuClick);
...

private void MenuClick(object sender, System.EventArgs e)
{
   MenuItem mi = sender as MenuItem;
   if(mi != null)
   {
      // You can now figure out which MenuItem was clicked.
   }
}