文本框验证接受数字，+， - 和空格 [英] Textbox validation to accept numbers,+,- and empty space

问题描述

大家好，



我想对文本框进行验证，这是一个接受数字的电话号码，符号如+， - ，空的空间



例如+49 561 56789-0

Hi All,

I want to do a validation to a text box which is a phone number which accepts numbers,symbols like "+","-",empty space

e.g [phone]

Private Sub TextBox1_KeyPress(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles TextBox1.KeyPress
If Asc(e.KeyChar) < 48) _
               Or Asc(e.KeyChar) > 57) Then
            e.Handled = True
        End If
        If (Microsoft.VisualBasic.Asc(e.KeyChar) = 8) Then
            e.Handled = False
        End If
end sub

我知道这只会检查数字，但我需要包含两个符号+， - ......不知道我该怎么做。





请帮忙。谢谢。

I know this would check only numbers but i need to include two symbols "+","-"...Not sure how do i do this.


Please help. Thanks.

推荐答案

你听说过 RegEx [ ^ ]？

所有你需要做的就是使用 IsMatch [


您可以在这里找到的示例模式：

http://regexlib.com/DisplayPatterns.aspx?categoryId=7&AspxAutoDetectCookieSupport=1 [ ^ ]

http://www.regular-expressions.info/examples.html [ ^ ]

Have you ever heard about RegEx[^]?
All you need to do is to use IsMatch[^] method with pattern to telephone number.

Example patterns you'll find here:
http://regexlib.com/DisplayPatterns.aspx?categoryId=7&AspxAutoDetectCookieSupport=1[^]
http://www.regular-expressions.info/examples.html[^]

这篇关于文本框验证接受数字，+， - 和空格的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！