如何在c#中反序列化JSON数据并从中获取值

本文关键字：获取 数据 反序列化 JSON | 更新日期: 2023-09-27 18:06:09

我已经序列化了mvc表单，现在想在c#中反序列化它。请帮我解决这个问题。以下是我的前端代码

<input type="search" id="txtsearch">
<input type="button" id="btnsearch" />
<script type="text/javascript">
    $(function () {
        DrawTable(0);
        $('#btnsearch').click(function (e) {
            var searchname = $('#txtsearch').val();
            var form = $('form').serialize();
            //var form = $(this).serializeArray();
            DrawTable(form);
        });

</script>

，下面是我想通过反序列化

从序列化数据中获取值的方法
public JsonResult GetAllCustomers(string sEcho, string sColumns, int iDisplayStart, int iDisplayLength, string sSearch, int iSortCol_0, string sSortDir_0, string filters, int UserId = 0,string form="") {
    string sortDirection = sSortDir_0;
    DataTableGridModel resultModel = new Logic(x,y ).GetCustomersForGrid(sEcho, sColumns, iDisplayStart, iDisplayLength, sSearch, iSortCol_0, sSortDir_0, UserId);
    return Json(resultModel, JsonRequestBehavior.AllowGet);
}

如何在c#中反序列化JSON数据并从中获取值

使用Newtonsoft.Json.dll在c#中序列化和反序列化json数据

使用Newtonsoft.Json.dll创建以下方法，并通过传递字符串格式的json数据调用反序列化方法

private static JsonSerializerSettings CreateSettings()
    {
        var settings = new JsonSerializerSettings();
        settings.NullValueHandling = NullValueHandling.Ignore;
        settings.ReferenceLoopHandling = ReferenceLoopHandling.Ignore;
        settings.DateFormatHandling = DateFormatHandling.MicrosoftDateFormat;
        return settings;
    }
private static Newtonsoft.Json.JsonSerializer CreateSerializer()
    {
        var settings = CreateSettings();
        return Newtonsoft.Json.JsonSerializer.Create(settings);
    }
public T Deserialize<T>(object target)
    {
        if (target == null)
        {
            throw new ArgumentNullException("target");
        }
        var result = default(T);
        var json = target as string;
        if (json != null)
        {
            var serializer = CreateSerializer();
            using (var stringReader = new StringReader(json))
            {
                using (JsonReader jsonReader = new JsonTextReader(stringReader))
                {
                    result = serializer.Deserialize<T>(jsonReader);
                }
            }
        }
        return result;
    }

1)。在客户端将表单编码为JSON字符串 

//in javascript, serialize the form to JSON:
// -- this will only work if all elements on the form have a name attribute  -
var stringToReturnToServer = JSON.stringify($('form').serializeArray());

2)。解码json字符串到字典，所以你可以检索元素的名称在服务器端，您将处理一个包含JSON对象数组的字符串，每个对象数组都有两个属性:名称和值。这很好地转化为c# Dictionary<string,string> 

   using Newtonsoft.Json;
    private class FormField
    {
        [JsonProperty("name")]
        public string a { get; set; }
        [JsonProperty("value")]
        public string b { get; set; }
    }
    private void ReadFormData(string sFormData)
    {
            //this will throw if you give two form fields the same name in your HTML.
            Dictionary<string,string> asFormData = JsonConvert.DeserializeObject<List<FormField>>(sFormData).ToDictionary(x => x.a, x => x.b);

           //VALUES OF FORM ELEMENTS NOW ACCESSIBLE BY NAME IN DICTIONARY 
           string sSearchText = asFormData["txtsearch"];
}

…这里的代码仅限于序列化和反序列化，您需要将实际的JSON字符串GET或POST回服务器。

相关文章：