Javascript 如何将对象列表从视图中的java脚本代码传递到控制器中的操作方法
我在javascript编程方面没有太多经验。我想将对象列表从“视图”中的javascript代码传递到MVC“控制器”中的操作方法。 以下是我努力实现的目标—— MVC模型和控制器:Javascript 如何将对象列表从视图中的java脚本代码传递到控制器中的操作方法,javascript,c#,model-view-controller,Javascript,C#,Model View Controller,我在javascript编程方面没有太多经验。我想将对象列表从“视图”中的javascript代码传递到MVC“控制器”中的操作方法。 以下是我努力实现的目标—— MVC模型和控制器: Public Class Student { Public int Id {get; set;} Public string Name {get; set;} Public string Address {get; set;} } Pub
Public Class Student
{
Public int Id {get; set;}
Public string Name {get; set;}
Public string Address {get; set;}
}
Public class StudentController : Controller
{
Public ActionResult Index()
{
// Read the data from database, create a list of “Student”
return View(“Display”, StudentList);
}
[HttpPost]
Public ActionResult OrderStudentList(List<Student> StudentList)
{
// Code to ascend/descend list
}
}
什么都没起作用。如果有人帮忙,我会非常感激。
谢谢学生姓名
//这是jquery,要使用$syntax,必须包含它。它是可用的
//在项目目录中,您只需检查并更新以下行。
函数myFunction(){
var studentL=@Html.Raw(Json.Encode(Model));
$.ajax({
url:“@url.Action”(“OrderStudentList”,“Student”)”,
类型:“POST”,
contentType:“应用程序/json”,
数据:JSON.stringify({StudentList:studentL}),
成功:功能(响应){
响应?警报(“它起作用了!”):警报(“它没起作用”);
}
});
}
我不太确定您希望这一行做什么:
var studentL = @Model.ToList();
但无论如何,您需要立即将模型转换为JSON,您的Javascript函数需要如下所示:
function myFunction() {
$.ajax({
url: "@Url.Action("OrderStudentList", "Student")",
type: "POST",
contentType: "application/json",
data: '@Html.Raw(JsonConvert.SerializeObject(Model.ToList()))',
success: function (response) {
response ? alert("It worked!") : alert("It didn't work.");
}
});
}
您的操作方法需要具有以下签名:
[HttpPost]
Public ActionResult OrderStudentList(List<Student> model)
{
// Code to ascend/descend list
}
[HttpPost]
Public ActionResult OrderStudentList(列表模型)
{
//上升/下降列表的代码
}
您是否尝试过将数据
对象用字符串引号括起来<代码>数据:“JSON.stringify({StudentList:studentL})”,如果我这样做,在单击按钮后什么也不会发生。我尝试了列表和数组。在运行时,行var studentArr=@Model.ToArray()变为:var studentArr=Student[];抛出错误,“Javascript严重错误,语法错误”非常感谢John M先生。这解决了我的问题。
Converted a list to an array and tried to copy each element of a list
individually to an element of javascript array as follows
var arrayJs = [];
for(var i=0; i<= @Model.Count(); i++)
{
arrayJs.push(@Model.ElementAt(i));
}
But it gives the syntax error with the “i does not exist in
the current context”.
Created a ViewModel with Student list as a property
Class StudentList
{
Public List<Student> StudentList {get; set;}
}
Tried passing an instance of a viewModel as a JSON object to action
method “OrderStudentList”.
<button onclick="myFunction()">Student Name</button>
<script type="text/javascript">
function myFunction() {
var studentL = @Html.Raw(Json.Encode(Model));
$.ajax({
url: "@Url.Action("OrderStudentList", "Student")",
type: "POST",
contentType: "application/json",
data: JSON.stringify({ StudentList: studentL }),
success: function (response) {
response ? alert("It worked!") : alert("It didn't work.");
}
});
}
var studentL = @Model.ToList();
function myFunction() {
$.ajax({
url: "@Url.Action("OrderStudentList", "Student")",
type: "POST",
contentType: "application/json",
data: '@Html.Raw(JsonConvert.SerializeObject(Model.ToList()))',
success: function (response) {
response ? alert("It worked!") : alert("It didn't work.");
}
});
}
[HttpPost]
Public ActionResult OrderStudentList(List<Student> model)
{
// Code to ascend/descend list
}