如何去除所有 alpha 的字符串? [英] How to strip a string of all alpha's?

问题描述

Dim phoneNumber As String = "077 47578 587(num)"

我如何从每个不是数字的字符中去除上面的字符串.所以只剩下数字然后检查以确保它是 11 个字符长?

How do i strip the above string off every character which isnt a number. So only the numbers are left and then check to make sure it is 11 characters long?

推荐答案

dim number as string = Regex.Replace(phoneNumber,"[^0-9]","")

if number.length = 11 then
 'valid number
else
 'not valid
end if

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