https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Regular_Expressions#special-quantifier-range email validation https://stackoverflow.com/questions/46155/how-to-validate-an-email-address-in-javascript https://www.sitepoint.com/javascript-validate-email-address-regex/ https://www.w3resource...
This package can be particularly useful in situations where you need to validate user input in your Flutter application. Features Email validation: Checks whether a given string matches the standard format for an email address. URL validation: Determines whether a given string is a well-formed URL...
using System.Windows.Controls;/// /// 不能为空验证/// publicclassNotNullValidationRule:ValidationRule { publicNotNullValidationRule(){ ValidatesOnTargetUpdated =true; } public override ValidationResultValidate(object value, CultureInfo cultureInfo){if(value == null || (value isstringval &&string.Is...