Use AJAX to submit data from HTML form to WebMethod

问题

So I'm taking in data from an HTML form and then using AJAX to send the data to a web method to then be sent to a sqlite database, but my AJAX call is failing. What did I mess up? Am I doing it correctly?

HTML Form

<form id="addForm" >
     <input type="text"  name="playername" id="playername" placeholder="Player"/> 
     <input type="text" name="points" id="points" placeholder="Points" />
     <input type="text" name="steals" id="steals" placeholder="Steals" />
     <input type="text" name="blocks" id="blocks" placeholder="Blocks" /> 
     <input type="text" name="assists" id="assists" placeholder="Assists" />
     <input type="text" name="mpg" id="mpg" placeholder="MPG" /> 
     <input type="text" name="shotpct" id="shotpct" placeholder="Shot %" />
     <input type="text" name="threepct" id="3pct" placeholder="3 %" /> 
     <input type="button" value="add player" id="addbtn" name="addbtn" />
     </form>

AJAX

 $("#addbtn").click(function () {
                var form = $("#addForm").serializeArray();
                $.ajax({
                    type: 'POST',
                    url: "players.aspx/addRow",
                    data: JSON.stringify(form),
                    dataType: 'json',
                    success: function () {
                        alert('success');
                    },
                    error: function () {
                        alert('failure');
                    }
                });
                    });

and the web method(not finished, was just testing to see if I was getting data)

[WebMethod]
        public static void addRow(object form)
        {
            var stuff = form;
        }

I'm still learning how to use a lot of this stuff so any help will be greatly appreciated.

回答1:

Replace

type: 'POST',

with

method: 'POST',

dataType: 'json' is not needed since you're not receiving data back. The data returned from the server, is formatted according to the dataType parameter.

Also remove JSON.stringify(form),this is already done with the .serialize();

回答2:

replace

JSON.stringify(form)

with

$('form').serializeArray()

So you will have:

$("#addbtn").click(function () {
                var form = $("form").serializeArray();
                $.ajax({
                    type: 'POST',
                    url: "players.aspx/addRow",
                    data: form,
                    dataType: 'json',
                    success: function () {
                        alert('success');
                    },
                    error: function () {
                        alert('failure');
                    }
                });
                    });

If you still get error. there might be a server side problem in the page you are calling. to make sure of that I suggest you use the 'Advanced REST client' witch is a Google Chrome extension and you can test posting values with it and see the result.

来源：https://stackoverflow.com/questions/38254312/use-ajax-to-submit-data-from-html-form-to-webmethod

标签

ASP.NET

ajax

forms

webmethod