title: check whether an array is multidimensional
body: <p>as I am implementing the ICollection-Interface in my class I want to implement the CopyTo-Method and I have to throw an Argument-exception if the array is multidimensional. 
  What is meant by this? The head of my method is this</p>
  
  <p>public void CopyTo(MyClass[] array, int arrayIndex)</p>
  
  <p>I thought these brackets would mean that the given array is one-dimensional but when I automatically import the comments from the Interface the comment appears, that I have to check for multidimensionality. 
  Can someone explain it to me?</p>
  
  <p>With kind regards</p>
  
  <p>Sebastia</p>