主题：请教：这样的正则怎么写？

格式一：

Dim data As String = "(10ml:5mg)"
Dim reg As new System.Text.RegularExpressions.Regex("[0-9a-zA-Z]+")
Dim mc As object = reg.Matches(data)
msgbox(mc.count)
msgbox(mc(0).value)
msgbox(mc(1).value)