主题：请教老师，这种问题的单元格怎么筛选出来

参考代码

Dim str As String = "aaa(bbbccdd(efg)999999"
Dim ls As new List(Of String)
For Each s As String In str
    If s = "(" Then
        ls.add("(")
    ElseIf s = ")" Then
        If ls.count > 0 AndAlso ls(ls.count-1) = "(" Then
            ls.RemoveAt(ls.count-1)
        Else
            msgbox("多了),不匹配")
            Exit For
        End If
    End If
Next
msgbox("不匹配括号:" & String.join(",",ls.ToArray))