data-annotations

I'm using .net 4.5 WebForms with Model Binding and Entity Framework 5. Part of my webform: <asp:ListView ID="MenteeModuleList" ItemPlaceholderID="itemPlaceHolder" OnCallingDataMethods="MenteeModuleList_CallingDataMethods" ItemType="PFA_Mentorship.BLL.MenteeModuleBL+MenteeModuleGrid" DataKeyNames="MenteeModuleID" SelectMethod="GetMenteeModulesGrid" InsertItemPosition="LastItem" InsertMethod="InsertMenteeModule" runat="server"> <LayoutTemplate> <table runat="server"> <tr runat="server"> <th id="Th1" runat="server">Module</th> <th id="Th2" runat="server">Start Date</th> <th id="Th3" runat="server

Using: EF 4.3.1, Visual Studio 2010, SQL CE 4.0 My understanding is that when declaring Foreign Keys with DataAnnotation in EF, it can be done either of the following ways: Option 1- [ForeignKey("Player1Home")] public long? HPlayer1Id { get; set; } public virtual Player Player1Home { get; set; } Option 2- public long? HPlayer1Id { get; set; } [ForeignKey("HPlayer1Id")] public virtual Player Player1Home { get; set; } Problem: When the InverseProperty DataAnnotation gets used with Option 2 an extra column gets generated in the database (Player1Home_Id) in addition to HPlayer1Id. [Table("Matches"

I've created a custom ValidationAttribute class to check the age of a person in my application: public class MinimumAgeAttribute : ValidationAttribute { public int MinAge { get; set; } public override bool IsValid(object value) { return CalculateAge((DateTime) value) >= MinAge; } private int CalculateAge(DateTime dateofBirth) { DateTime today = DateTime.Now; int age = today.Year - dateofBirth.Year; if (dateofBirth > today.AddYears(-age)) age--; return age; } } The data annotation is set on the field like this: [MinimumAge(MinAge = 18, ErrorMessage = "Person must be over the age of 18")] public

I'm displaying errors on my form with the use of <%= Html.ValidationSummary("Please review the errors below") %> My domain object inherits from a base class and I am finding that the base class data annotation properties are being displayed at the bottom of the list. This goes against the order in which they appear in my form. Is there any way of specifying what order the errors should be displayed? Example: public class ClassA { [Required]public string AProperty; } public class ClassB : ClassA { [Required]public string BProperty; } My form (strongly typed view of ClassB): AProperty: <%= Html

I'm using the ADO.Net Entity Framework. To handle input validation I'm trying to use DataAnnotations , I looked around on StavkOverflow and Google, and everywhere I found almost the same example of using MetadataType . However, I've been trying for hours and I cannot get it to work.. For some reason, the CustomAttributes from the EmployeeMetaData class are not being applied to the respective field/properties on the Employee class. Does anyone have any idea why this might be happening? And yes, I'm sure the property types and names match perfectly. Any help is appreciated, I've been stuck on

I've searched a lot in the forum, but haven't found anything about regarding this issue. I have 2 properties in the EntityFramework Code First: [Column(TypeName = "Money")] public decimal? Debit { get; set; } [Column(TypeName = "Money")] public decimal? Credit { get; set; } One of them should be not null, but the other one should be null Examples: Debit=null; Credit=34; Debit=45; Credit=null; On the other hand, it should not be possible to set both or none of them null. Is it possible to handle this issue with data annotations or should I solve it with a workaround? Best regards! You could

In my ViewModels I use several DataAnnotations to validate the form data, there are usually 2-3 annotations per field. For example a field for an email address might look like this: [Required(ErrorMessage = "Please enter an email address.")] [Email(ErrorMessage = "That is not a valid email address.")] // Custom public string Email { get; set; } Now if someone were to submit the form, both errors would show up in the validation summary. Is there any easy way to specify an order to run the validation annotations so that if the Required validation fails, the Email validation doesn't run? If this

I'm running in to a bit of a problem in asp.net web api's model binding and validation (via data annotations). It seems like if i have a model with property such as Dictionary<string, childObject> obj { get; set; } the childObject's validations don't seem to trigger. The data is bound from json with Json.Net serializer. Is there some workaround or fix to this? Or have I misunderstood something else related to this? I can't help but wonder why this doesn't result in errors: public class Child { [Required] [StringLength(10)] public string name; [Required] [StringLength(10)] public string desc; }