model-binding

问题 I'm trying to bind file uploads to a ViewModel (as demonstrated in this post). But I can't get the files to bind to the Files property on the ViewModel. Please see the code below. What am I doing wrong? (Edit for clarity - I'd like the uploads to bind to the VM, not have them as an Action parameter.) ViewModel public class PrimaryImageUploadViewModel { public PrimaryImageUploadViewModel() { } public HttpPostedFileBase[] Files { get; set; } public string Title { get; set; } } Action [HttpPost]

问题 UPDATE : solved! Nothing to see here, please move on :-) I have an ApiController method that takes a System.Version parameter. The parameter is passed in the request body, as JSON. This is what gets sent: { "Major": 0, "Minor": 7, "Build": 0, "Revision": 0, "MajorRevision": 0, "MinorRevision": 0 } The routing works - my method is being called - but the parameter has an empty Version object (all values zero). Why? Here's the declaration of the controller method: // POST api/service/details

问题 Is there any useful hook in ASP.NET MVC (MVC4) which can let you access the Action method parameter (View model) before the action method becomes invoked, and then also (e.g. depending on the value of something you checked in the action method parameter) let you prevent the action method from being invoked, i.e. instead either forward the view model object (action method parameter) to another action method or directly to some view (i.e. without any further processing in an action method) ? If

问题 I'm trying to build a custom action filter which grabs the incoming model out of the filter context, adds it to tempdata, then does "other stuff". My action method looks like this: [HttpPost] [MyCustomAttribute] public ActionResult Create(MyViewModel model) { // snip for brevity... } Now, i want to add the model to TempData , after the model-binding has kicked in and transformed the form value collection into MyViewModel . How do i do that? public override void OnActionExecuting

问题 I want to enforce that all dates in my system are valid and not in the future, so I enforce them inside the custom model binder: class DateTimeModelBinder : IModelBinder { public object BindModel(ControllerContext controllerContext, ModelBindingContext bindingContext) { var value = bindingContext.ValueProvider.GetValue(bindingContext.ModelName); try { var date = value.ConvertTo(typeof(DateTime), CultureInfo.CurrentCulture); // Here I want to ask first if the property has the

问题 If I do in a template of a component something like: <input [(ngModel)]="myProperty"></input> then it works, but if I do it with a function in my component it does not: <input [(ngModel)]="getMyProperty()"></input> Here is the plunkr. Tested on RC6. Why? 回答1: Try this construction <input [ngModel]="getMyProperty()"></input> use only square brackets. 来源： https://stackoverflow.com/questions/39468450/ngmodel-with-a-bind-function-not-working-in-ng2

问题 I was under the impression that model binding in the ASP.Net Web API was supposed to support binding with the same minimum level of functionality supported by MVC. Take the following controller: public class WordsController : ApiController { private string[] _words = new [] { "apple", "ball", "cat", "dog" }; public IEnumerable<string> Get(SearchModel searchSearchModel) { return _words .Where(w => w.Contains(searchSearchModel.Search)) .Take(searchSearchModel.Max); } } public class SearchModel

问题 I am just trying to learn MVC and facing some issues.When I am submitting my partial view, I am getting null in Model Blog inside Create Method. What I am doing wrong and what is the right approach? View(Index.cshtml) @model IEnumerable<Samples.Controllers.Blog> @{ ViewBag.Title = "Index"; } <h2>Index</h2> <p> @Html.ActionLink("Create New", "Create") </p> <table class="table"> <tr> <th>Sample</th> <th>URL</th> <th>Name</th> </tr> @foreach (var item in Model) { <tr> <td> @Html.ActionLink("Edit

问题 I have a collection of items populated to a drop down menu: string myUserName = "PopulatedWithSomeUser"; var users= from x in userRepository.GetAll() select new SelectListItem { Value = x.Id.ToString(), Text = x.Name, Selected = (x.Name == myUserName ) }; This correctly populates an object and sets the selected item. Next I pass this to my View with a ViewModel and try to Populate/select: I tried: @Html.DropDownListFor(model=>model.Users,new SelectList(Model.Users),new {id = "add-user-list",

问题 I'm attempting to build an ASP.NET Core 1.1 Controller method to handle an HTTP Request that looks like the following: POST https://localhost/api/data/upload HTTP/1.1 Content-Type: multipart/form-data; boundary=--------------------------625450203542273177701444 Host: localhost Content-Length: 474 ----------------------------625450203542273177701444 Content-Disposition: form-data; name="file"; filename="myfile.txt" Content-Type: text/plain << Contents of my file >> ---------------------------