文本框验证：仅允许使用字母和简单括号＆＃34;（＆＃34;和＆＃34;）＆＃34; vb.net

Question

我想用keyPress事件验证文本框。它应该允许字母和＆＃34;（＆＃34;和＆＃34;）＆＃34;我已经编写了字母表检查代码，但不知道如何检查＆＃34;（＆＃34;和＆＃34;）＆＃34;。

     Private Sub txtBankName_KeyPress(sender As Object, e As KeyPressEventArgs) Handles txtBankName.KeyPress
    If Not (Asc(e.KeyChar) = 8) Then
        If Not ((Asc(e.KeyChar) >= 97 And Asc(e.KeyChar) <= 122) Or (Asc(e.KeyChar) >= 65 And Asc(e.KeyChar) <= 90) Or Asc(e.KeyChar) = 32) Then
            e.KeyChar = ChrW(0)
            e.Handled = True
        End If
    End If
End Sub

Answer 1

这允许所有字母和＆＃34;（＆＃34;＆amp;＆＃34;）＆＃34;。请参阅这两个SO问题：
How can I validate a string to only allow alphanumeric characters in it?
Only allow specific characters in textbox

Private Sub txtBankName_KeyPress(sender As Object, e As KeyPressEventArgs) Handles txtBankName.KeyPress    
    If System.Text.RegularExpressions.Regex.IsMatch(e.KeyChar.ToString(), "[^a-zA-Z0-9()\b]") Then
       e.Handled = True
    End If
End Sub