只接受文本框的数字

问题描述

我发现这段代码可以让我的文本框只接受数字.

I found this code for making my textbox only accept numbers.

Private Sub TextBox1_KeyPress(ByVal sender As System.Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles TextBox1.KeyPress
    Dim allowedChars As String = "0123456789"
    If allowedChars.IndexOf(e.KeyChar) = -1 Then
        ' Invalid Character
        e.Handled = True
    End If
End Sub

但是...用户无法使用退格按钮删除数字.那我该怎么办?

But... the user can't delete the numbers using the backspace button. How do I do then?

推荐答案

您还需要处理粘贴的文本(可能没有按键).最好的方法是使用 MaskedTextBox.

You also need to handle pasted text (there may not be a keypress). The best way to do this is with a MaskedTextBox.

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