Question 85932 in ASP.NET Question posted in
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I can't get data from AJAX post request in C# controller – Asp.net

I want to send data from javascript to c# controller using ajax, but when the Add method in my controller is called all its arguments are null

AJAX:

function addRequest(name, price, about){
    $.ajax({
        url: 'Services/Add',
        type: 'POST',
        contentType: "application/json; charset=utf-8",
        data: {
            'name'  : name ,
            'price' : price,
            'about' : about,
        },
        dataType: "json",
        success: (insert) => {
            if (insert) {
                $('#result').fadeIn(200).html(insert).fadeOut(200, () => {
                    location.reload()
                })
            }
        }
    })
}

My controller:

[ApiController]
[Route("[controller]")]
public class ServicesController: Controller
{
    [HttpPost]
    [Route("Add")]
    public async Task Add(string? name, string? price, string? about)
    {
        await Context.Services.AddAsync(new Service
        {
            Name = name,
            Price = price,
            About = about
        });
        await Context.SaveChangesAsync();
    }
}
Tags:

5

Answers


  1. 0

    Check if your controller is authorized or not. If you want the controller to work without any authorization then you have to add allowannoymous attribute on your controller since no access token is given in the ajax call.

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  2. 0

    try this

    [HttpPost]
[Route("Add")]
public async Task Add(Service model) {
    //
}
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  3. 0

    I think binding of this controller in not working, you are sending object by ajax but you are expecting three separte primitives

    try:

        [HttpPost]
    [Route("Add")]
    public async Task Add(Service service)
    {
     await Context.Services.AddAsync(service);
    }

    or try adding setup binding attributes

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  5. 0

    I get better results using the $.post() method of the jquery library
    here is an example:

    $.post(`Services/Add/?name=${name}&price=${price}&about=${about}`,
    function (insert) {
     if (insert) {
                $('#result').fadeIn(200).html(insert).fadeOut(200, () => {
                    location. Reload()
                })
            }
    });

    Source: JQuery Documentation about $.post()

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