CODEWITHSUNDEEP
asp.net-core-2.1
BlakeH
BlakeH

Reputation: 3494

QueryString parameter binding with an array

I'm following all of the documentation I can find for binding a querystring parameter to an action parameter of type int[], but my array is always empty.

To repro: Spin up a vanilla aspnet core web application, ASP.NET Core 2.1, API template project, and modify the default ValuesController by adding the following action:

[HttpGet("count")]
public ActionResult<int> GetCountOfItems([FromQuery]int[] number)
{
    return number.Count();
}

Calling this action like so:

GET /values/count?number=1&number=2

Should return 2, but always ends up 0.

Any ideas outside of creating custom model binders?

Upvotes: 1

Views: 1064

Answers (2)

BlakeH
BlakeH

Reputation: 3494

Until the proper patch is rolled out, you can specify the name argument for the FromQuery attribute constructor.

[FromQuery(Name="number")]

Leaving this as the answer until then

Upvotes: 1

Alexej Timonin
Alexej Timonin

Reputation: 71

This has been fixed and will ship with the next patch. You can see the issue here for more detail: https://github.com/aspnet/Mvc/issues/7712

Upvotes: 1

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