主题：如何控制某列中只能输入0和1两个数字的组合?

参考代码

Dim pattern As String =  "^[01]+$"
Dim txt As String = "001a010"

Dim rgx = new System.Text.RegularExpressions.Regex(pattern)
If rgx.isMatch(txt) = False Then
    msgbox("错误")
End If