检查有效输入 [英] check for valid input

问题描述

让我说，如果我的输入分为4种类型，则应该有一个按钮来检查每个输入的有效性.

Let say , if my input is grouped into 4 types and there should be a button to check the valid of each input.

How am i goin to code the button to check for the valid of my input?

推荐答案

如果使用的是ASP.NET，则可以使用可用的验证控件来检查输入内容是否有效.如果每个字段都是必需的(RequiredFieldValidator)，满足特定表达式(RegularExpressionValidator)，是否在特定范围内(RangeValidator)，或者您可以比较字段(CompareValidator)甚至在客户端或服务器端编写自己的验证器(CustomValidator).

默认情况下，您的按钮为CausesValidation ="true"，并且您可以根据需要设置ValidationGroup.与按钮相同的ValidationGroup中的每个字段都将进行相应的验证.

If you are using ASP.NET you could use the validation controls available to check if each field is required (RequiredFieldValidator), meets a specific expression (RegularExpressionValidator), is in a specific range (RangeValidator) or not or you can compare fields (CompareValidator) or even write your own validator (CustomValidator) in client or server side.

Your button is by default CausesValidation="true" and you can set a ValidationGroup if need be. Each field in the same ValidationGroup as your button will be validated accordingly.

您好，
最简单的方法是使用正则表达式来检查输入的字符串是否有效.表达式((?=.*\\d)(?=.*[A-Za-z])(?=.*[@#

Hi,
The easiest way is to use a regular expression to check if the entered string is valid. The expression ((?=.*\\d)(?=.*[A-Za-z])(?=.*[@#

%]))将检查输入的字符串是否包含至少1个数字(?=.*\\d)，1个字母(大写或小写(?=.*[A-Za-z])和列表(?=.* [@#

%])) will check if the entered string contains at least 1 number(?=.*\\d), 1 letter(either upper or lower case(?=.*[A-Za-z]) and 1 character in the list (?=.*[@#

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