在asp.net中将大量数据从视图发送到控制器 [英] Sending large amount of data from view to controller in asp.net

问题描述

更具体地说，让我解释一下我遇到了什么.我试图从视图向控制器提交数据列表.我能够成功提交一些数据，而没有任何问题.但是，当数据超过250个项目列表并且更多时，就会出现问题.当我单击一个提交按钮时，在调试它时它将传递一个NULL值.我的代码没有错误，因为我已经毫无问题地向控制器提交了100个项目的列表.我想我必须指定一些内容，以便它也可以发送大量列表.在这里，我没有使用Ajax或任何JavaScript代码来提交表单.我正在使用发布请求将其直接提交给控制器.

To be more specific let me explain what did I encounter. I was trying to submit a List of data from view to controller. I was able to submit some data successfully without any problem. But the problem arises when the data is more than around a list of 250 items and more than that. When I click a submit button it passes a NULL value when I debug it. There is no error with my code because I have submitted a list of 100 items to the controller without any problem. I guess there will be something that I have to specify so that It will also send a large number of lists. Here I'm not using ajax or any javascript code to submit the form. I'm submitting it directly to the controller using post request.

我在下面发布了一些代码片段，以更准确地对其进行描述.

I have posted some snippet of my code below to describe it more precisely.

查看

    <form method="post" action="SubmitList">
                <div class="row"> 
                    <div class="col-md-12" style="padding-top:1%">
<input type="submit" value="PASS" class="btn btn-primary" style="float:right;" />
                        <div class="box-body">
                            <table id="#example1" class="table table-bordered table-striped">
                                <thead>
                                    <tr>
                                        <th>No</th>
                                        <th>Name</th>
                                    </tr>
                                </thead>
                                <tbody>
                                    @{
                                        int i = 1;
                                    }
                                    @for (int j = 0; j < Model.Count(); j++)
                                    {
                                        <tr>
                                            <td>@Html.Raw(i++)</td>
                                            @Html.HiddenFor(item => item[j].Id, new { htmlAttributes = new { @class = "form-control" } })
                                            <td>
                                                @Html.DisplayFor(item => item[j].FullName) 
                                            </td>
                                        </tr>
                                    }
                                </tbody>
                                <tfoot>
                                </tfoot>
                            </table>
                        </div>
                    </div>
                </div>
            </form>

控制器

[AuthorizedAction]
[HttpPost] 
public async Task<IActionResult> SubmitList(List<Student> students)
    {
////
    }

请告诉我我的代码有什么问题

Can you tell me what's wrong with my code, please

推荐答案

请在Startup#ConfigureServices

Please try this in Startup#ConfigureServices

services.Configure<FormOptions>(options => options.ValueCountLimit = 1000); // you may want to adjust this limit

参考: https://docs.microsoft.com/en-us/dotnet/api/microsoft.aspnetcore.http.features.formoptions

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