It’s developers not making the most of their capabilities. Using of regular expressions isn’t the problem.
#Regex validator how to
I’ve been looking into how to improve upon what people do to handle name data. There’s also the problem of people deliberately trying to hack our system by injecting SQL. We want prevent bad data from entering our system. Validation is a necessary process in processing data, especially when collecting data from an unknown source. If you have a customer support team, ask them for data about customer issues dealing with name problems.
#Regex validator update
As you get data, update your code to handle it. At some point, you have to make decisions to be able to write your code. A couple of people did refer me to an article about assumptions that developers make about people’s names. My plan is to start with that, and adapt as hopefully more people contribute name examples. So, in the mean time, I’ll have to create some test data for some permutations that I know I want to test for. I didn’t receive as many responses with name data as I hoped. Just reply to this tweet with your name, like so
Q: Have you ever been unable to type your name correctly into a website form, because their validation didn’t like your names’ “special” characters? I need some data for a project. So I did what any developer would do – I asked my Twitter followers. When starting to explore this topic, I wanted to get some real world data, so I could use it for my unit tests. It’s likely that they’ll have to misspell their name on a different site, because they had a different set of validation rules. When people have to alter the spelling of their name to pass the form validation, they have to remember how they misspelled their name for that site. If you tell the truth, you don’t have to remember anything. When people encounter such situations, they have to remove the special characters from their names – which is usually any character not in the English alphabet. It’s the name validation regex built into your form, that has failed them.
When your customers cannot correctly write their names in your form, it’s not the customers fault – it’s yours. Yet, they can fail spectacularly on simpler things like writing decent HTML or allowing people to spell their own names correctly in forms. Developers can spend a lot of time on crafting and polishing some complicated interactions in JavaScript. Layout = - My ASP.NET => => model.Web Development is a funny thing.
Now when using this ViewModel inside MVC view, we can have code like this = "Home Page" You need to include namespace in your C# class to use EmailAddress data annotation. data annotation to validate email in C# We can also validate email address using EmailAddress data annotation in C# class, suppose here is my StudentModel.cs class using Remote Validations in MVC (Check if Email id exists in database) Validate email address using Data Annotation in MVC C# Model Verify email address exists or not? (With email id validation in C#) Var result = lookup.Query(domain, QueryType.MX) Lookup.Timeout = TimeSpan.FromSeconds(5) Public bool ValidateMXRecord(string domain, string mail) In the above code, we are using given regular expression to validate email address string pattern = you can fine tune above code and add MX Record validation also using DNSClient Nuget packageand MX Records of email using C# as below When validating an email address using regex, you need to include namespace in your C# code, let's take a look at an example using System Ĭonsole.WriteLine(EmailId1+ " is a valid Email address ") Ĭonsole.WriteLine(EmailId1 + " is not a valid Email address") Ĭonsole.WriteLine(EmailId2+ " is Valid Email address ") Ĭonsole.WriteLine(EmailId2 + " is Not a Valid Email is a valid Email is Not a Valid Email address It is very common part of the web-application to include email address, and for this we require to validate if email address is correct and acceptable to save in database or not, so in this post, I have explained how we can validate email address in C# using regex and without using regex also (using data annotation in mvc).
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