VB.Net 检查标点符号

Question

我有一个按键事件将输入限制为数字，如下所示：

Private Sub txtWeight_KeyPress(sender As Object, e As KeyPressEventArgs) Handles txtWeight.KeyPress

    If Not Char.IsNumber(e.KeyChar) Then
        e.Handled = True
    End If

End Sub

但我也想增加输入句点的可能性，所以我尝试将代码更改为：

Private Sub txtWeight_KeyPress(sender As Object, e As KeyPressEventArgs) Handles txtWeight.KeyPress

    If Not Char.IsNumber(e.KeyChar) AndAlso Not Char.IsPunctuation(e.KeyChar) Then
        e.Handled = True
    End If

End Sub

但是如您所知，该程序允许我输入每个标点符号，我想将其限制为仅“.”。我如何检查输入的标点符号？

Answer 1

e.Handled = e.KeyChar <> "."c AndAlso Not Char.IsNumber(e.KeyChar)

VB.Net 检查标点符号

VB.Net check punctuation

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keypress