常用正则集合

Imports System.Text.RegularExpressions

Module Module_Regex
'判断是否是数字（不带 + - 号）
Public Function IsNum(ByVal value As String) As Boolean
    Return Regex.IsMatch(value, "^\d*[.]?\d*$")
End Function

'判断是否是数字（带 + - 号）
Public Function IsNumeric(ByVal value As String) As Boolean
    Return Regex.IsMatch(value, "^[+,-]?\d*[.]?\d*$")
End Function

'判断是否非负整数（不带 + - 号）
Public Function IsInt(ByVal value As String) As Boolean
    Return Regex.IsMatch(value, "^\d*$")
End Function

End Module