How can I get valueprovider in asp.net core 1.0?

Question

In MVC5, I used to obtain a ValueProvider within a Controller Action like this:

public class ConfigurationsController : Controller
{
    public ActionResult Index()
    {
        var valueProvider = this.ValueProvider;
        var someValue = valueProvider.GetValue("someKey");
        return View();
    }
}

But it seems to be gone in Asp.NET Core 1.0. Is there a way to get the ValueProvider in the new version?

Thanks in advance

Answer 1

You can create a CompositeValueProvider using ControllerContext.

var valueProvider = await CompositeValueProvider.CreateAsync(ControllerContext);

CompositeValueProvider represents Microsoft.AspNetCore.Mvc.ModelBinding.IValueProvider whose values come from a collection of Microsoft.AspNetCore.Mvc.ModelBinding.IValueProviders.

Example

[HttpPost]
public async Task<IActionResult> SomeAction()
{
    var valueProvider = await CompositeValueProvider.CreateAsync(ControllerContext);
    var someValue = valueProvider.GetValue("foo");
    return View();
}