c# - jquery 调用页面方法失败

Question

我正在尝试使用 jquery 调用页面方法将数据从 HTML 表保存到数据库。但是，jquery 调用失败并显示:500 内部服务器错误。有什么建议吗？

下面是代码:

脚本:

    $(document).ready(function() {


        $("#save").click(function(event) {

            var i = 0;
            var inputs = new Array();
            $("#tbNames").find("input").each(function() {         
                inputs[i] = [this.id, this.value];
                i++;
            });

            var columnsCount = 2;
            $.ajax({

                type: "POST",
                url: "Default2.aspx/Save",
                contentType: "application/json; charset=utf-8",
                data: "{inputs: inputs, columnsCount: columnsCount}",
                dataType: "json",
                success: AjaxSucceeded,
                 error: AjaxFailed
            });
        });
        function AjaxSucceeded(result) {
            alert(result.d);
        }

        function AjaxFailed(result) {
            alert(result.status + ' ' + result.statusText);
        }

    });



    </script>

HTML:

姓名 任务 删除

    <input id="save" type="button" value="Save data" />

页面方法的C#代码:

 [WebMethod ()]
    public static List<Hashtable> ParseJson(string[] array, int rowsCount)
    {
    var result = new List<Hashtable>();

    List<string[]> list = new List<string[]>();
    foreach (var item in array)
    {
        int comma = item.IndexOf(',');
        list.Add(new string[] { item.Substring(0, comma), item.Substring(comma + 1) });
    }

    int i = 0;
    while (i < list.Count)
    {
        var dict = new Hashtable();
        int j = i + rowsCount;
        for (; i < j; i++)
        {
            dict.Add(list[i][0], list[i][1]);
        }

        result.Add(dict);
    }

    return result;

}

[WebMethod()] 
public static string Save(string[] inputs, int columnsCount)
{
    List<Hashtable> r = ParseJson(inputs, columnsCount);

    List<TestClass> listOfTasks = new List<TestClass>();
    foreach (var item in r)
    {
        TestClass tc = new TestClass();
        tc.name  = (string)item["name"];
        tc.task = (string)item["task"];

        listOfTasks.Add(tc);
    }

    DBManager dbm = new DBManager();
    string actionResult = dbm.SaveData(listOfTasks);
    if (actionResult == String.Empty)
    {
        return "Saved!";
    }
    else
    {
        return actionResult;
    }
}

Answer 1

关键是json2.js及其stringify函数。实现该函数 AJAX 调用后看起来像这样:

$.ajax({ type: "POST",
         url: "Default2.aspx/Save",
         contentType: "application/json; charset=utf-8",
         data: "{'inputs':" + JSON.stringify(inputs) + ",'columnsCount':1 }",
         dataType: "json",
         success: AjaxSucceeded,
         error: AjaxFailed
});

source .