I am checking my database in Create(FooViewModel fvm){...} to see if the fvm.prop1 and fvm.prop2 already exist in that combination; if so, I want to add an error to the modelstate, then return the ...

I have some problem with Html.ValidationSummary. I don't want to display property errors in ValidationSummary. And when I set Html.ValidationSummary(true) it does not display error messages from Mo...

In my web application I am validating the url from glabal.asax . I want to validate the url and need to redirect to an action if needed. I am using Application_BeginRequest to catch the request eve...

I have a registration form on which I use client side validation (Required, StringLength etc. specified on my view model). The form is currently pretty much how the scaffolder creates it: @using (H...

How do you get a model's validation to also validate child objects in a generic list property. I have a model that I'm trying to validate, this is not what's being posted to the server, but a comp...

I have this classes: public class GroupMetadata { [HiddenInput(DisplayValue = false)] public int Id { get; set; } [Required] public string Name { get; set; } } [MetadataType(typeof(GrupoMeta...

I have separate model and viewmodel classes. Where viewmodel classes only do UI level validation (refer: Validation: Model or ViewModel). I can verify on post action in a controller that model (ve...

There's a way to set the default resource to the data annotations validations? I don't wanna make something like this: [Required(ErrorMessage="Name required.", ErrorMessageResourceType=typeof(Cus...

What approach do you recommend for validating a DateTime on the client side in MVC? Let's say I have a model with a property named DateOfBirth that is a DateTime, like so. public class UserModel ...

I'm decorated a ViewModel in my ASP.NET MVC 2 site with System.ComponentModel.DataAnnotations validation attributes. For one of my fields, named Price, I want to validate that the value is not belo...

I'm trying to validate a model containing other objects with validation rules using the System.ComponentModel.DataAnnotations attributes was hoping the default MVC implementation would suffice: va...

I have a model like this: public PurchaseOrder { [Required] [StringLength(15)] public virtual string OrderNumber {get;set;} // etc. } When I submit an order from the view (using $.post, not...