无法使用Ajax ASP.NET Core MVC更新部分视图 [英] Can't Update Partial View With Ajax ASP.NET Core MVC

问题描述

我想用Ajax更新我的部分视图，但是由于某些原因，它不起作用.如果我使用加载方法(并注释ajax代码)，则它可以工作.这是我的代码:

I want to update my partial View with Ajax, but for some reason, it doesn't work. If I use load method (and comment ajax code), it works. this is my code:

这是我的主要观点:

@model IEnumerable<WebApplicationMVC.Models.Test>

@{
    ViewData["Title"] = "Testing";
}

<div id="partial">
@await Html.PartialAsync("Question", Model.ToList()[0])
</div>

<input type="button" id="b" value="next" class="btn btn-default" />

<script>

$("#b").click(function () {

    //this code doesn't work

    $.ajax({
        url: 'Test/Question',
        type: 'GET',
        contentType: "application/json; charset=utf-8",
        data: { id: '@Model.ToList()[1].ID' },
        dataType: "json",
        success: function (result) {
            $("#partial").html(result);
        }
    });

    //this code works
    @*$("#partial").load('@Url.Action("Question","Test",new { id=Model.ToList()[1].ID })');*@

});

这是我的问题操作方法int Test 控制器:

this is my question action method int Test controller:

public IActionResult Question(int id)
{
    return View(Methods.GetTestById(id));
}

我有什么错误?

推荐答案

您已指定dataType: "json",，但是您的方法返回的是视图(html)，而不是JsonResult，因此会引发异常.

You have specified dataType: "json", but your method returns a view (html), not JsonResult so an exception is being thrown.

要么省略dataType选项(该函数将根据响应进行计算)，要么将其更改为dataType: 'html'

Either omit the dataType option (the function will work it out based on the response) or change it to dataType: 'html'

此外，您可以删除contentType选项.您正在制作一个没有主体的GET，因此将其忽略(如果它是POST，则由于未对数据进行字符串化，您的方法也会失败).

In addition, your can delete the contentType option. You are making a GET which has no body so its ignored (and if it was a POST, your method would also fail because you have not stringified the data).

您的网址也应为/Test/Question(正斜杠)，并且您应始终使用@Url.Action()方法生成网址

Your url should also be /Test/Question (leading forward slash), and you should always use the @Url.Action() method to generate the url

您的功能应该是

$.ajax({
    url: '@Url.Action("Question","Test")',
    type: 'GET',
    data: { id: '@Model.ToList()[1].ID' },
    success: function (result) {
        $("#partial").html(result);
    }
});

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