email-validation

问题 Ok, there are a million regexes out there for validating an email address, but how about some basic email validation that can be integrated into a TSQL query for Sql Server 2005? I don\'t want to use a CLR procedure or function. Just straight TSQL. Has anybody tackled this already? 回答1: Very basic would be: SELECT EmailAddress, CASE WHEN EmailAddress LIKE '%_@_%_.__%' AND EmailAddress NOT LIKE '%[any obviously invalid characters]%' THEN 'Could be' ELSE 'Nope' END Validates FROM Table This

问题 I have seen a multitude of regular expressions for different programming languages that all purport to validate email addresses. I have seen many comments saying that the expressions in question do not work for certain cases and that they are either too strict or too permissive. What I\'m looking for is a regular expression that I can use in my C# code that is definitive. The best thing I have found is this ^([\\w\\.\\-]+)@([\\w\\-]+)((\\.(\\w){2,3})+)$ Is there something better? 回答1: Email

问题 I have some problems with the validation of a Email. In my Model: [Required(ErrorMessage = \"Field can\'t be empty\")] [DataType(DataType.EmailAddress, ErrorMessage = \"E-mail is not valid\")] public string ReceiverMail { get; set; } In my view: <script src=\"@Url.Content(\"~/Scripts/jquery.validate.min.js\")\" type=\"text/javascript\"></script> <script src=\"@Url.Content(\"~/Scripts/jquery.validate.unobtrusive.min.js\")\" type=\"text/javascript\"></script> @Html.TextBoxFor(m => m

问题 This question already has answers here : How should I validate an e-mail address? (32 answers) Closed 6 years ago . How can we perform Email Validation on edittext in android ? I have gone through google & SO but I didn\'t find out a simple way to validate it. 回答1: public static boolean isValidEmail(CharSequence target) { return (!TextUtils.isEmpty(target) && Patterns.EMAIL_ADDRESS.matcher(target).matches()); } Edit:: It will work On Android 2.2+ onwards !! Edit: Added missing ; 回答2: To

问题 What is the most elegant code to validate that a string is a valid email address? 回答1: What about this? bool IsValidEmail(string email) { try { var addr = new System.Net.Mail.MailAddress(email); return addr.Address == email; } catch { return false; } } To clarify, the question is asking whether a particular string is a valid representation of an e-mail address, not whether an e-mail address is a valid destination to send a message. For that, the only real way is to send a message to confirm.

问题 What is the cleanest way to validate an email address that a user enters on iOS 2.0? NOTE : This is a historical question that is specific to iOS 2.0 and due to its age and how many other questions are linked to it it cannot be retired and MUST NOT be changed to a \"modern\" question. 回答1: The answer to Using a regular expression to validate an email address explains in great detail that the grammar specified in RFC 5322 is too complicated for primitive regular expressions. I recommend a real

问题 Closed. This question is off-topic. It is not currently accepting answers. Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed 4 years ago . I need to validate the email address of my users. Unfortunately, making a validator that comforms to standards is hard Here is an example of a regex expression that tries to comform to standard Are there any PHP library (preferably, open-source) that validates email address? 回答1: Have you looked at PHP's filter_

问题 What\'s a good technique for validating an e-mail address (e.g. from a user input field) in Android? org.apache.commons.validator.routines.EmailValidator doesn\'t seem to be available. Are there any other libraries doing this which are included in Android already or would I have to use RegExp? 回答1: Don't use a reg-ex. Apparently the following is a reg-ex that correctly validates most e-mails addresses that conform to RFC 2822, (and will still fail on things like "user@gmail.com.nospam", as

问题 Over the years I have slowly developed a regular expression that validates MOST email addresses correctly, assuming they don\'t use an IP address as the server part. I use it in several PHP programs, and it works most of the time. However, from time to time I get contacted by someone that is having trouble with a site that uses it, and I end up having to make some adjustment (most recently I realized that I wasn\'t allowing 4-character TLDs). What is the best regular expression you have or

问题 I\'m not asking about full email validation. I just want to know what are allowed characters in user-name and server parts of email address. This may be oversimplified, maybe email adresses can take other forms, but I don\'t care. I\'m asking about only this simple form: user-name@server (e.g. wild.wezyr@best-server-ever.com) and allowed characters in both parts. 回答1: See RFC 5322: Internet Message Format and, to a lesser extent, RFC 5321: Simple Mail Transfer Protocol. RFC 822 also covers