Question

I have string of 9 letters.

string myString = "123987898";

I want to retrieve the first 3 letters “123”
then 2 more letters “98”
and then 4 more letters “7898”.

Which c# string function support this functionality.

Answer 1

You can use Substring:

myString.Substring(0,3)
myString.Substring(3,2)
myString.Substring(5,4)

It’s also possible to make it more complicated than necessary by using a combination of regular expressions and LINQ:

string myString = "123987898";
Regex regex = new Regex("(.{3})(.{2})(.{4})");
string[] bits = regex
    .Match(myString)
    .Groups
    .Cast<Group>()
    .Skip(1)
    .Select(match => match.Value)
    .ToArray();