disperse string by letter

I have a string var asd = “qwert”

How can I make it
“q” “w” “e” “r” “t”
by splitting.

I check out string.split method but I guess it’s not useful for this problem.

No need for splitting:

var aString = "qwert";
var aCharArray = aString.ToCharArray();

Although a string is essentially already an array of chars, but that will convert it to a “real” array.