modelstate | 易学教程

Is it correct way to use ModelState.Remove to deal with ModelState?

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问题 Im working on a big MVC3 web application and have an annoyance regarding the ModelState.IsValid method. ModelState is being used in nearly all of my controllers so to validate the data being posted. The views are all based on ViewModels which contain different classes and these classes obviously contain properties which could be marked as [Required] . The problem i am having is the required properties are sometimes not required and im having to use the ModelState.Remove method so that

MVC3 Remove ModelState Errors

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问题 I've got a situation where I'm uploading an image the user has selected from his local file system. My Form in my view, basically has two submit buttons. One is used to Submit the form normally, and all validation executes. The 2nd is only for uploading the image, in which case I don't want to validate yet. I managed to turn off Client Side validation by giving my 'Upload Image' submit button an a class value of "style-name cancel" , so <input type="submit" name="UploadImageButton" value=

ModelState.IsValid == false, why?

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Where can I find the list of errors of which make the ModelState invalid? I didn't see any errors property on the ModelState object. queen3 About "can it be that 0 errors and IsValid == false": here's MVC source code from https://github.com/Microsoft/referencesource/blob/master/System.Web/ModelBinding/ModelStateDictionary.cs#L37-L41 public bool IsValid { get { return Values.All(modelState => modelState.Errors.Count == 0); } } Now, it looks like it can't be. Well, that's for ASP.NET MVC v1. As you are probably programming in Visual studio you'd better take advantage of the possibility of using

ASP.NET MVC - How to Preserve ModelState Errors Across RedirectToAction?

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I have the following two action methods (simplified for question): [HttpGet] public ActionResult Create(string uniqueUri) { // get some stuff based on uniqueuri, set in ViewData. return View(); } [HttpPost] public ActionResult Create(Review review) { // validate review if (validatedOk) { return RedirectToAction("Details", new { postId = review.PostId}); } else { ModelState.AddModelError("ReviewErrors", "some error occured"); return RedirectToAction("Create", new { uniqueUri = Request.RequestContext.RouteData.Values["uniqueUri"]}); } } So, if the validation passes, i redirect to another page

Validation: How to inject A Model State wrapper with Ninject?

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I was looking at this tutorial http://asp-umb.neudesic.com/mvc/tutorials/validating-with-a-service-layer--cs on how to wrap my validation data around a wrapper. I would like to use dependency inject though. I am using ninject 2.0 namespace MvcApplication1.Models { public interface IValidationDictionary { void AddError(string key, string errorMessage); bool IsValid { get; } } } // wrapper using System.Web.Mvc; namespace MvcApplication1.Models { public class ModelStateWrapper : IValidationDictionary { private ModelStateDictionary _modelState; public ModelStateWrapper(ModelStateDictionary

How to replace the default ModelState error message in Asp.net MVC 2?

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问题 I need to replace the model state resource (to another language). I've seen some answers to the question above, but unfortunately I could'nt make it work. Any detailed answer or example would be appriciated. Thank you. 回答1: Got It. In ASP.NET MVC 2 RC, It is PropertyValueInvalid , not InvalidPropertyValue . 回答2: I don't know about v2, but this works on v1: Add a resource file in App_GlobalResources. In the resource file you can define strings named PropertyValueInvalid and

ModelState.AddModelError - How can I add an error that isn't for a property?

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问题 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 whole view. I tried: public ActionResult Create(FooViewModel fvm){ if (ThatComboAlreadyExists(fvm)) { ModelState.AddModelError(\"Model\", \"There is already one like that\"); return View(fvm); } } ...but I get no display of errors in the Html.ValidationSummary , which is where I assume they would

How to figure out which key of ModelState has error

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问题 How do I figure out which of the keys in ModelState that contains an error when ModelState.IsValid is false? Usually I would just hover the mouse thru the ModelState.Values list checking item by item for error count > 0. But now I\'m working on a view that has some lists of complex objects, totalling 252 ModelState items(each item of each object of each list has an entry on ModelState.Keys). So, is there an easier way to point out the error source? 回答1: You can check the ViewData.ModelState

ASP.NET MVC - How to Preserve ModelState Errors Across RedirectToAction?

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问题 I have the following two action methods (simplified for question): [HttpGet] public ActionResult Create(string uniqueUri) { // get some stuff based on uniqueuri, set in ViewData. return View(); } [HttpPost] public ActionResult Create(Review review) { // validate review if (validatedOk) { return RedirectToAction(\"Details\", new { postId = review.PostId}); } else { ModelState.AddModelError(\"ReviewErrors\", \"some error occured\"); return RedirectToAction(\"Create\", new { uniqueUri = Request

Validation: How to inject A Model State wrapper with Ninject?

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问题 I was looking at this tutorial http://asp-umb.neudesic.com/mvc/tutorials/validating-with-a-service-layer--cs on how to wrap my validation data around a wrapper. I would like to use dependency inject though. I am using ninject 2.0 namespace MvcApplication1.Models { public interface IValidationDictionary { void AddError(string key, string errorMessage); bool IsValid { get; } } } // wrapper using System.Web.Mvc; namespace MvcApplication1.Models { public class ModelStateWrapper :