防止文本框输入字符串 [英] Preventing textbox to enter string

问题描述

我正在尝试一个文本框，该文本框接受大于10的手机号码.问题在于它也接受字符串.我可以验证它是否仅接受数字.这是我的代码:

i am trying a textbox which accept mobile number if it is greater than ten. Problem is that it also accept the string. can i validate it to accept only digit. here is my code:

<script language="C#" runat="server">
    protected void CustomValidatorPhone(object source, ServerValidateEventArgs args)
  {
      if (txtMobileNumber.Text.Length <=10)
    {  args.IsValid = true; }
   else
    {  args.IsValid = false; }
}</script>

然后调用它:

and callling it on:

<asp:CustomValidator CSSClass="body" id="cusPhone" ValidationGroup="EditProfile"   OnServerValidate="CustomValidatorPhone" Text="Invalid mobile Number"   runat="server" /> </div>

所以在脚本中我需要添加或扩展我的代码..预先感谢..

so in script what i need to add or extend my code.. thanks in advance..

推荐答案

您只需将 MaxLength = 10 赋予文本框txtMobileNumber.

您可以使用 RegularExpression [ javascript [

You just give MaxLength=10 to the textbox txtMobileNumber.

You can use RegularExpression[^] or javascript[^]

Do customizations based on your need, that''s all.

为此，您可以使用仅包含数字的正则表达式.
有关详细信息，请看看

For that, you can use regular expressions, that takes onl y numbers.
For details, Have a look

您可以使用RegularExpression查找文本是否为数字.
下面是代码

You can use RegularExpression to find whether the text is number.
Below is the code

System.Text.RegularExpressions.Regex regularExpression = new System.Text.RegularExpressions.Regex("^-[0-9]+

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