How can i post multiply objects in array and get the data in the action method

Question

I am using ASP.NET Core 2.1 with Web API and posting works fine when I send one object. How can I send this type here.

Until now I have tried this approach, https://ibb.co/dKztDGv, but without success. I don't get an error but I get the values from the last object only. Please help me get all the values in the array.

//I post this type of objects in array 
[
 {something...},
 {something...}
]

//what I've tried
public IActionResult PostNewLanguages([FromBody] JObject newLanguages, string id)
{
    var oneUser = GetSpecificUser(id);
    JObject class1DataJson = newLanguages;
    return Ok();
}

Have you looked here https://stackoverflow.com/questions/47731755/asp-net-core-posting-array-object-json? — Dave Barnett, Aug 31 '19 at 18:45
or this one https://stackoverflow.com/questions/13573384/how-to-post-arbitrary-json-object-to-webapi? — Dave Barnett, Aug 31 '19 at 18:53
First of all thanks to you reply,But how can i acces to request in this case?{'reques't:{} , {} } , in run time , request will hold the data for all objects,but in compile time there is an error — Code, Aug 31 '19 at 19:05
For example i have [FromBody] obj and in compile time ofcourse obj.request does not work and i get that obj dont have such a property... — Code, Aug 31 '19 at 19:15
I've editted my answer. You need to get at the data using a key. — Dave Barnett, Aug 31 '19 at 19:22
Thanks for your time sir.But i get this now {[ {id:1} , {id:2} ]} how to go inside,i send object like you said — Code, Aug 31 '19 at 19:29
i meaned how can i dynamicly make variables as data holder for every object — Code, Aug 31 '19 at 19:33

Dave Barnett · Answer 1 · 2019-08-31T19:20:39.450

0

When I run this and send an array of objects I get this error

InvalidCastException: Unable to cast object of type 'Newtonsoft.Json.Linq.JArray' to type 'Newtonsoft.Json.Linq.JObject'.

So I suggest trying to send something like this instead

{ "myData": [
    {something...},
    {something...}
]}

And then to access the data you will need to do

var myValues = newLanguages["myData"];

foreach(var value in myValues)
{
}

'myData' being whatever key you use for your array. Looks like 'request' in your case going by your comments.

edited Aug 31 '19 at 19:20

answered Aug 31 '19 at 19:04

Dave Barnett

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Thank you.But in the controlles how i will acces to the objects? – Code Aug 31 '19 at 19:11

score 0 · Answer 2 · answered Sep 02 '19 at 06:54

0

If you post an array of object, you need to receive it as a List like

public IActionResult PostNewLanguages([FromBody] List<JObject> newLanguages, string id)
{
    foreach(var obj in newLanguages)
    {

    }

    return Ok();
}

answered Sep 02 '19 at 06:54

Ryan

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How can i post multiply objects in array and get the data in the action method

2 Answers2