data-annotations

I am running into an issue in Visual Studio 2012 that involves the System.ComponentModel.DataAnnotations.Schema namespace. It tells me that the ForeignKeyAttribute cannot be resolved, the solution in the past was to add the using statement that is commented out below. VS2012 can't resolve the Schema namespace as VS2010 was able to. Has anything changed in recent .Net releases that would be causing this problem? If so, how do I work around them? using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.ComponentModel.DataAnnotations; // using System

I am trying to make the ID field read only. It is an Identity field in the DB so the user will not be setting it. However they would like to see it. What am I missing as the below, when assigned to a DataForm still allows that value to be Edited. public class StatusChoice : BindableBase { private int id; [Key, DatabaseGenerated(DatabaseGeneratedOption.Identity)] [Editable(false,AllowInitialValue = false)] public int ID { get { return id; } set { id = value; OnPropertyChanged(); } } } vijay Mark Property with ReadOnly attribute. [ReadOnly(true)] public decimal BodyMassIndex { get; private set;

Summary: I want a data annotation validator to reference another property in the same class ( TitleAuthorAndPublishingConfiguration ). However, DB.SaveChanges() is not being called on this class directly. Rather it is being called on the parent of this class ( WebsiteConfiguration ). Therefore validationContext.ObjectType is returning WebsiteConfiguration and I am unable to refer to properties of TitleAuthorAndPublishingConfiguration within the data annotation validator. WebsiteConfiguration.cs public class WebsiteConfiguration { [Key] [DatabaseGenerated(DatabaseGeneratedOption.Identity)]

I would like to intercept the "<" character in the form field by a regex validator. I will describe the problem in 3 steps: Step 1 : When I try to submit a form with a field containing the "<" character, I get the "Potentially dangerous request..." - as expected in ASP.NET. Step 2 : To avoid ASP.NET's RequestValidation, I decorate my Update method in the controller with "[ValidateInput(false)]". It works as expected - now I can post "<" character without error. Step 3 : I use xVal with DataAnnotations. For example, [Required] or [StringLength(255)] works as expected. BUT when I use:

I am getting The value 'abc' is not valid for fieldName. as error message. which is default error message and i want to override it in easier way. as of now what i have tried is listed below [RegularExpression(@"^\d+$",ErrorMessage="enter numeric value")] [Integer(ErrorMessageResourceType = typeof(appName.Resources.abc.Resource), ErrorMessageResourceName = "error_numeric")] [RegularExpression("([1-9][0-9]*)")] Range(1,int.max,ErrorMessage="enter numeric value") but failed to change default error message. Suggest me the easiest possible way to do this. using System; using System.Collections

Is it possible to use a data-annotation attribute for dropdownlists to be valid, only if the user selects an option different from one with the value o (zero). The option with value o (zero) is "Please Select an account", which is selected by default. I used [Required] attribute to validate this dropdownlist, but it doesn't have any effect, because, how I said, by default the option with value o (zero)- "Please Select an account"- is selected. Something like: [Range(1, int.MaxValue, ErrorMessage = "Please enter a value bigger than {1}")] public int Value { get; set; } Making a drop-down list