number regex code example
Example 1: just number regex
// https://regex101.com/r/qyq3PG/1
// or
/^[0-9]*$/
Example 2: regex match any number
For matching an integer number of one single char/digit, specify:
[0-9]
But for matching any number of more than one char/digit; add "+":
[0-9]+
Example for matching hour with minutes of HH:MM format in a file:
grep "[0-9]\+\:[0-9]\+" file.txt
Example 3: regex numeric digits
Dim rRegex As Object
Set rRegex = CreateObject("VBScript.RegExp")
rRegex.Pattern = "[0-9]{8,9}"
MsgBox rRegex.test("12345678")
rRegex.Pattern = "[0-9]+"
MsgBox rRegex.test("12345")
Example 4: regular expression number from 1 to 100
^[1-9][0-9]?$|^100$
Example 5: regex for numbers
Regex regex = new Regex(@"^\d$");