Arrays

* Double[,] d= new Double[10,20];
* String[,,] st=new String[10,10,10];
Jagged Arrays
* int[][] i= new int[3][];
* i[0] = new int[5];
* i[1]=new int[2];
* i[2]=new int[4];
for(int k=0;k<i[0].lenght;k++)
* FileStream[,] fs = new FileStream[4,5];
* object[,] ob=fs;
* Stream[,] st= (Stream[]) ob;