how can get key value array from "form-data" in asp.net core by [FromForm]

Question

I have a form that has key value array like this:

In this array, keys has not started from zero so when I defined Request model for get this array as you can see I can't get any value from this array.

Notice that when I try to send this array from zero key that's work correctly:

But I need to send this array with that approach because the keys make sense.

Request Model Class:

public class Correction
{
    [Required]
    public int theory_exam_id { get; set; }

    [Required]
    public int[] answers { get; set; }
}

Controller Method:

[HttpPost("correction")]
public async Task<ActionResult<TheoryExam>> CorrectionTheoryExam([FromForm] Correction correction)
{
    return Ok(correction);
}

I'm not sure that it applies to Asp net core (never tried), bur you can check this post for non sequential indices -> haacked.com/archive/2008/10/23/model-binding-to-a-list.aspx — N1gthm4r3
– N1gthm4r3, Commented Jul 17, 2020 at 12:53
is there any way to implement this issue in other approach? i'm beginner in asp so I thankful for helping — alirezadp10
– alirezadp10, Commented Jul 17, 2020 at 12:59

N1gthm4r3 · Accepted Answer · 2020-07-17 13:43:26Z

3

Try this approach

answers.Index = 50
answers[50] = 1
answers.Index = 61
answers[61] = 2
answers.Index = 82
answers[82] = 3

answered Jul 17, 2020 at 13:43

N1gthm4r3

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