Converting

To Another Array

It is possible to implicitly convert from an array of one reference type to an array of another reference type
The arrays are convertible as long as their ranks are the same.

This is possible because System.String derives from System.Object

System.String[] places = new string[4]; 
System.Object[] objects = places;   //implicit conversion 

Going the other way requires an explicit conversion

System.String[] moreplaces = (string[]) objects  //explicit conversion 

To Comma Delimited String

string[] places = new string[3]; 
places[0] = "london"; 
places[1] = "new york"; 
places[2] = "tokyo"; 
string concat = System.String.Join(",",places); 

To ArrayList

arraylist = new System.Collections.ArrayList; 
arraylist.addrange(array); 

To List

System.Collections.Generic.List<string> oList; 
oList = new System.Collections.Generic.List<string>(); 
string[] array 
oList.AddRange(array);