How to process array key in IFormCollection - json

Question

I have a method that receives an object of type IFormCollection because I need to process files.
[HttpPost]
[AllowAnonymous]
[Route("StoreData")]
public async Task<IActionResult> StoreDataX(IFormCollection obj)
{
var item = FormCollectionToJson(obj);
var id = this.Service.SaveDynamicData(item, "");
return StatusCode(200, JObject.FromObject(new
{
message = "Registration included and workflow started."
}));
}
I convert the IFormCollection keys to a JObject
private JObject FormCollectionToJson(IFormCollection obj)
{
dynamic json = new JObject();
if (obj.Keys.Any())
{
foreach (string key in obj.Keys)
{
var value = obj[key][0];
json.Add(key, value);
}
}
return json;
}
But I am not able to do the conversion when I receive an array, how could I handle this type of data?
[Postman Request]
return of FormCollectionToJson
{
"companies[0]": "1-1"
}
Expected return
{
"companies": [
"1-1"
]
}
Where am I going wrong? How to process the array or how to send it?

Answer 1

If you want to store array in the JObject, you could use the JArray Class to represent a Json array.
Please refer to the following code:
[HttpPost]
public async Task<IActionResult> Post(IFormCollection obj)
{
var item = FormCollectionToJson(obj);
return StatusCode(200, JObject.FromObject(new
{
message = "Registration included and workflow started."
}));
}
private JObject FormCollectionToJson(IFormCollection obj)
{
dynamic json = new JObject();
if (obj.Keys.Any())
{
foreach (string key in obj.Keys)
{ //check if the value is an array
if (obj[key].Count > 1)
{
JArray array = new JArray();
for (int i = 0; i < obj[key].Count; i++)
{
array.Add(obj[key][i]);
}
json.Add(key, array);
}
else
{
var value = obj[key][0];
json.Add(key, value);
}
}
}
return json;
}
The test result as below: