CODEWITHSUNDEEP
c#jqueryasp.net-core-mvcasp.net-ajax
Justin Sweet
Justin Sweet

Reputation: 13

ASP.Net Core posting list from ajax to controller

I am able to send a single complex type from ajax to controller however not able to pass a list, always comes up null. *** Code has been updated to show successful passing. 

public class EntityAliasTest
{
  public int IDTEMP1 { get; set; }
  public string NAMETEMP1 { get; set; }
}

[HttpPost]
public IActionResult SaveEntityAliases([FromBody] 
List<EntityAliasTest> postData)
{
  var es = ModelState.SerializeErrors();
  return Json(new[] { postData, es });
}

var aliasList = new Array();

var o = { IDTEMP1 : 0, NAMETEMP1: 'test 0' };
aliasList.push(o);

o = { IDTEMP1 : 1, NAMETEMP1: 'test 1' };
aliasList.push(o);

o = { IDTEMP1 : 2, NAMETEMP1: 'test 2' };
aliasList.push(o);

var postData= JSON.stringify(aliasList);

$.ajax({
  url: "DataAdministration/EntityAlias/SaveEntityAliases",
  type: "POST",
  cache: false,
  dataType: "json",
  contentType: "application/json; charset=utf-8",
  data: postData,
}).done(function (data) {

Upvotes: 1

Views: 2868

Answers (1)

Jorge Kean
Jorge Kean

Reputation: 24

Based on your ajax call, you are sending a single object that contains a list. So your controller will also expect an object with that kind of structure.

Instead of this: var data = { postData: aliasList }; var data2send = JSON.stringify(data);

You can try: var data2send = JSON.stringify(aliasList);

You can use online json validator to check if you pass a valid json data. You can refer on the link below.

https://jsonlint.com/

Hope it will help.

Upvotes: 1

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