If you need to customize the colors (or do more restyling) of validation messages in ASP.net MVC, the following snippet from a discussion on ASP.net forums should be useful: Add to Content/Site.css: /* styles for validation helpers */ .field-validation-error {     color: #b94a48; } .field-validation-valid {     ...

Just came across this validation error display in an MVC app I’ve recently started maintaining. The required input field validation seemed to not be localized, resulting in a mixed English and Greek (from the field’s Display name) message: Looking at the MVC model I noticed they were using [Required] attributes for the userName and password ...

Our next major release (13.2), updates our Validation Module with more features that come with different behavior rules, such as Warnings and Information. These can be applied to your existing validation rules using code or the Model Editor. The XAF validation module is a mature and flexible validation system, which allows you to create rules ...

XAF already provides strong and flexible validation for any object that fits specified Rules with build-in the Validation Module. In this post you can find a sample XAF application which extends the Validation to provide support for Warning/Information messages. The implementation uses any Validation Business Rule that exists in XAF’s ...

To sum up the discussion at http://stackoverflow.com/questions/1360113/is-java-regex-thread-safe/, you can reuse (keep in static variables) the compiled Pattern(s) and tell them to give you new Matchers when needed to validate those regex pattens against some string: import java.util.regex.Matcher; import java.util.regex.Pattern;  /** * ...

Καλησπέρα σε όλους, προσπαθώ να φτιάξω μια μικρή εφαρμογή σε wpf με το Pattern mvvm. Στο data layer για βάση δεδομένων χρησιμοποιώ .sdf file και Entity Framework.H εφαρμογή έχει 3 views και ενα ViewModelΣτο dataContext του mainWindow κάνω bind το ViewModel και τα άλλα δυο userControls παίζουν με το ίδιο ViewModel.Σε ένα UserControl έχω ...

In this post I would like to continue talking about validation in ASP.Net applications. I will look into the validation controls that ASP.Net provides. You can have a look at the first post in my blog regarding validation. You will show you that we can...(read more)

I am going to start a new series of posts and I am going to cover in depth all the validation mechanisms/techniques/controls we have available in our ASP.Net applications. As many of you may know, I am a Microsoft Certified Trainer and I will present...(read more)

A friend of mine is working in an ASP.Net application and using SQL Server as the backend. He also uses LINQ to SQL as his data access layer technology. I know that Entity framework is Microsoft's main data access technology. All the money and resources...(read more)

I ll start this post with a phrase : WE HAVE TO REMEMBER TO NOT REINVENT THE WHEEL . Why I say that? XAF with the help of eXpand  is now a very mature framework. Almost all the tools required for build LOB applications are here. XAF has many ruling engines (Validation,EditorState,Appearence) and eXpand also the same ...

Today i stump again upon the same problem . I wanted to throw a validation exception only if both of my properties do not have value. So lets create a validation rule for this one. More info on how we create custom validation rules can be found here Validation Module Since we are talking about multiple property values i think we should go with an ...