data-annotations

Can you create custom data annotations for the model that can be read inside the T4 template for the View like property.Scaffold is read? I would like to add data annotation parameters like Scaffold based on which I would build the view. Thank you Johnie Karr I wrote a blog post on the solution I came up with for MVC5. I'm posting it here for anyone who comes along: https://johniekarr.wordpress.com/2015/05/16/mvc-5-t4-templates-and-view-model-property-attributes/ Edit: In your entities, decorate property with custom Attribute namespace CustomViewTemplate.Models { [Table("Person")] public class

I have a Model Like this public int Id {get;set;} [Required] public string FirstName{get; set} [Required] public string LastName{get; set} The Id is auto generate in DB. when I want call Create action The ModelState says that "The Id field is required"!!!! I Found this for my problem but it not clean solution. Is there an other way to solve this? Is there a way that I change Mvc ModelBinder behavior for value types? The best solution to this problem is to use a view model. A view model is a class that you specifically design to meet the requirements of your view. So your controller action will

Using [RegularExpression(@"^[A-Za-z0-9._%+-]+@[A-Za-z0-9.-]+\.[A-Za-z]{2,4}$")] attribute never validates an email property of my model. I'm new to regular expressions so I can't figure out what is the problem. Little help? Look at this article: How To Validate Email Address With Regular Expression . The guy not only providing you with the regular expression, but also explaining step by step what it means. Not only its useful as an expression, but you can also learn a thing or two from this article. Hope this helps. Please let me know if not. [Required] [Display(Name = "Email Address")]

I have a 3 steps forms where I bind for each step on a ViewModel that has DataAnnotation. Everything works fine except that when I click on my "previous" button, the validation gets called and, if there's missing values, the user has to fill all required fields. If I go with an action link, then the data won't be persisted. What I'm looking for here is a way to save my values without calling the validation. I also consider using cookies but I don't think that it's the best way of doing it. Any ideas or suggestions? I use separate models for each step of my wizard pages. I also make sure that

I have a int property in my class and want to validate if the user has entered a string. How can I do that using data annotations? When I pass a non-integer value I get a excpetion like this: The value 'asdasd' is not valid for property. For example using this validation attribute: [Range(0, Int32.MaxValue, ErrorMessage="Invalid Number")] public int? Number { get; set; } and entering 'aaa' in a field tha uses the model I've got an excepetion with this message: The value 'aaa' is not valid for Number. Instead of the "Invalid Number" message. Any Ideas? I've put [Range(0, Int32.MaxValue,

I'm getting odd behavior with my validation in my view. My model has this property. [Display(Name = "Overflow Capacity")] [RegularExpression(@"[-+]?[0-9]*\.?[0-9]?[0-9]", ErrorMessage = "Number required.")] [Range(0,9999.99,ErrorMessage = "Value must be between 0 - 9,999.99")] public decimal OverFlowCapacity { get; set; } My view has this: <tr> <td>@Html.LabelFor(m=> m.OverFlowCapacity)</td> <td>@Html.EditorFor(m=>m.OverFlowCapacity)</td> <td> @Html.ValidationMessageFor(model => model.OverFlowCapacity)</td> </tr> If I enter a value like 'ABC', I get the validation message 'Number required' If