Here’s my improved version of Nathan Taylor’s solution used in archil’s answer. Nathan’s binder could only bind sub-properties of complex models, while mine can also bind individual controller arguments. My binder also gives you correct handling of empty parameters, by returning an actual empty instance of your array or IEnumerable. To wire this up, you … Read more
I just stumbled on this again after 2 years. I thought ASP.NET MVC 5 had solved this but looks like it’s not the case. So here goes how to solve the problem… Create a class called DecimalModelBinder like the following and add it to the root of your project for example: using System; using System.Globalization; … Read more
This problem persists in ASP.NET Core 2.0. The following code will resolve it, supporting ISO 8601 basic and extended formats, properly preserving the value and setting DateTimeKind correctly. This aligns with the default behavior of JSON.Net’s parsing, so it keeps your model binding behavior aligned with the rest of the system. First, add the following … Read more
Turns out, there are two solutions: Custom ModelBinder + Swagger configuration Custom TypeConverter (Swagger will automatically see it, and update UI accordingly) I went with TypeConverter, and everything worked! Since .Net team are not planning to add full support for DateOnly/TimeOnly in .Net 6, I’ve decided to create a NuGet to do so: https://www.nuget.org/packages/DateOnlyTimeOnly.AspNet (source … Read more
In general I avoid using enums when designing my view models because they don’t play with ASP.NET MVC’s helpers and out of the box model binder. They are perfectly fine in your domain models but for view models you could use other types. So I leave my mapping layer which is responsible to convert back … Read more
override BindProperty and if the property is “PropertyB” bind the property with my custom binder That’s a good solution, though instead of checking “is PropertyB” you better check for your own custom attributes that define property-level binders, like [PropertyBinder(typeof(PropertyBBinder))] public IList<int> PropertyB {get; set;} You can see an example of BindProperty override here.
Assuming you have the following models: public abstract class TableInputModel { } public class RectangleTableInputModel : TableInputModel { public string Foo { get; set; } } public class CircleTableInputModel : TableInputModel { public string Bar { get; set; } } And the following controller: public class HomeController : Controller { public ActionResult Index() { var … Read more
I think that some of the other answers have missed the meaning of the question: why does the default MVC model binder bind an empty Json array to null instead of an empty C# array? Well, I can’t tell you why they did that, but I can show you where it happens. The source for … Read more
You need to add [FromQuery] attribute to the model properties individually public class Criteria { [FromQuery(Name = “first_name”)] public string FirstName { get; set; } }
I believe a form field that is disabled does not submit anything. If you have a form and disable the foo field in that form, when you post the post will not have the value for the foo field. This is simply the nature of disabling a field in HTML and is not a MVC … Read more