c# - Ignoring white space for a Regex match

Question

I need to match 8 or more digits, the sequence of which can include spaces.

for example, all of the below would be valid matches.

12345678
1 2345678
12 3 45678
1234 5678
12 34567 8
1 2 3 4 5 6 7 8

At the moment I have d{8,} but this will only capture a solid block of 8 or more digits.
[ds]{8,} will not work as I don't want white space to contribute to the count of chars captured.

Answer 1

(d *){8,}

It matches eight or more occurrences of a digit followed by zero or more spaces. Change it to

( *d *){8,}  #there is a space before first asterik

to match strings with spaces in the beginning. Or

(s*ds*){8,}

to match tabs and other white space characters (that includes newlines too).

Finally, make it a non-capturing group with ?:. Thus it becomes (?:s*ds*){8,}