C# - Int[] to String (String.Join) / string to int[]

1. UInt32[] to String

var val = client.ReadNode<UInt32[]>(nodename);
strVal = String.Join(",", val);

UInt32[] to String

ex) UInt32[] Val = {1,2,3,4,5}
strVal = 1,2,3,4,5

2. String to Int[]

string numbersAsString = "1 2 3 4 5"; 

string[] numberStrings = numbersAsString.Split(' '); 

int[] numbers = Array.ConvertAll(numberStrings, int.Parse);