modelstate

问题 I am currently in the proccess of setting up remote validation using MVC3 so that a user is alerted if their chosen username already exists. Everything is set up and working correctly appart from the most important part, the error message not being displayed. If I submit the form the error message is displayed as the the page is refreshed with the relevant model state error added. Is there anyway to refresh the model validation summary with a Json result? 回答1: Sample code: Web.config must

问题 I have a fairly complex model needing to be validated, the problem is that this model is used on two different places, one where you register your customer and one where you simply add addresses. Some fields on the address are simply not visible on the register customer form. So when i check if ModelState.IsValid i get false of course since eg. the name is not entered on the billing address, but it is on the customer. That is why i want to before validation occurs, copy a couple of fields to

问题 As suggested by (among others) Kazi Manzur Rashid in this blog post, I am using ActionFilterAttributes to transfer model state from one request to another when redirecting. However, I find myself unable to write a unit test that test the behavior of these attributes. As an example, this what I want the test for the ImportModelStateAttribute to do: Setup the filterContext so that TempData[myKey] contains some fake "exported" ModelState (that is, a ModelStateDictionary I create myself, and add

问题 On my view, I have 2 partial views. 1st partial view (PV1) : user can type an item in a textbox and submit through an ajax form. 2nd partial view (PV2) : user can see a list of items previously submitted. The PV1 uses UpdateTargetId on a div on the PV2 because we would like to update our list with the newly added item. Everything works well when items submitted on the PV1 are valid. It doesn't work when ModelState.IsValid == false when ajax form is submitted. It doesn't work because the

问题 I'm trying to combine attribute-based routing in Web API with model validation. I simply can't get it to work as I would expect. class MyRequestModel { [DefaultValue("DefaultView")] public string viewName { get; set; } [Required] public string something { get; set; } } [HttpGet] [Route("myroute/{id:minlength(2)}")] public IHttpActionResult Test(string id, [FromUri]MyRequestModel request) { if (!ModelState.IsValid) { return BadRequest(ModelState); } // process here... return Json( /* result */

问题 How can I return a list/array of all keys that have an error? I have tried to do the below, but it says I can't have that sort of expression for some reason. ModelState.ToList(item => item.Value.Errors.Count > 0) 回答1: var errors = from modelstate in ModelState.AsQueryable().Where(f => f.Value.Errors.Count > 0) select new { Title = modelstate.Key }; 回答2: Count is a method. You need ()s after is. But I'd prefer Any, anyway: from item in ModelState where item.Value.Errors.Any() select item.Key

问题 In ASP.NET MVC there exists a ModelState class that contains ModelErrorCollection. And a ModelError represents an error the occurs during model binding. I know that ValidationResult is returned from ValidationAttribute.IsValid Method, and validates the specified value with respect to the current validation attribute. I understand that we can inherit from validationAttribute and override IsValid() in order to write a custom model validation attribute. Example of using ModelState : http://www

问题 I am learning MVC, and in ASP.Net MVC 3, what is the ModelState class ? I have looked on Google and MSDN, but I can't seem to get a clear understanding of it's purpose. Can anyone help? 回答1: Take a look at http://www.gxclarke.org/2010/05/consumption-of-data-in-mvc2-views.html under the ViewData.ModelState section. The ModelState property is a dictionary object that tracks HTTP values submitted to the server. In addition to storing the name and value of each field, it also tracks associated

问题 I am working on an application in mvc4.I want the application to work in English and Russian.I got titles in russian, but error messages are still in english. My model contains:- [Required(ErrorMessageResourceType = typeof(ValidationStrings), ErrorMessageResourceName = "CountryNameReq")] public string CountryName { get; set; } if(ModelState.IsValid) becomes false it will go to GetErrorMessage() public string GetErrorMessage() { CultureInfo ci = new CultureInfo(Session["uiCulture"].ToString())

问题 I always use ModelState.IsValid for check all of my model validation validated correctly in Server Side, but I think there is a limitation to use this. For example I define a Remote Validation attribute, but if I disable javascript then ModelState.IsValid don't check Remote Validation and always return true, Where is the problem? this is a limitation for ModelState.IsValid or is my fault? If necessary I can Add all my implementation. 回答1: This question has come around a few times. The answer