Error While Calling Webapi In My Asp.net Project

This is my api code that return successfull json data while using get method public Question[] Get() { getQuestion obj = new AllDataAccess.getQuestion(); return obj.questio

Solution 1:

It seems that your ajax url is wrong. You should specify the action name (post). Also, use JSON.stringify to retrieve proper json from javascript object.

var postData = { question:$("#submit").val() };
    $.ajax({
       type: 'POST',
       contentType: "application/json; charset=utf-8",
       url: 'http://localhost:53893/api/values/post',
       data: JSON.stringify(postData),
       dataType: 'json',
       success: function (data,status) {
           console.log(status);
       },
       error: function (err) {
           console.log(err);
       }
    });

In the server side, you should create a model class for Post method;

publicclassPostInput
{
    publicstring Question { get; set; }
}

And then Post method looks like;

[HttpPost]
publicvoidPost([FromBody]PostInput input)
{
     SaveQuestion obj = new AllDataAccess.controller.SaveQuestion();
     obj.savaData(question);
}

Solution 2:

If you want to use FromBody, you can do so. JavaScript

$.ajax({
    type: "POST",
    //default content-type, could be omittedcontentType: 'application/x-www-form-urlencoded; charset=UTF-8',
    url: 'http://localhost:53893/api/values/post',
    data: {'': $("#submit").val()}
});

API action

[HttpPost]
publicvoidPost([FromBody]string question)
{
     SaveQuestion obj = new AllDataAccess.controller.SaveQuestion();
     obj.savaData(question);
}

You had these issues.

1. Wrong content-type for your ajax call.
2. Data was not posted correctly.
3. val() should be used instead of .value.
4. API action should be decorated with [HttpPost].