c# - Regular expression for 10 digit number without any special characters

Question

What is the regular expression for a 10 digit numeric number (no special characters and no decimal).

Answer 1

Use this regular expression to match ten digits only:

@"^d{10}$"

To find a sequence of ten consecutive digits anywhere in a string, use:

@"d{10}"

Note that this will also find the first 10 digits of an 11 digit number. To search anywhere in the string for exactly 10 consecutive digits and not more you can use negative lookarounds:

@"(?<!d)d{10}(?!d)"