如何在提交包含结果数据的表单后将返回的数据绑定到 Telerik ASP.Net 核心网格

Question

我正在使用 ASP.Net Core MVC 3.1 和 EF 3.1 创建一个网络应用程序。我添加了一个网页，使用 ASP.Net Core Telerik Grid 分批（按年级）更新学生电话号码。页面顶部有一个小表格，有一些按钮，这些按钮允许 select 您想要更新学生电话号码的年级。单击成绩按钮后，我需要在表单控件下方的 ASP.Net Core Telerik Grid 中显示相关学生数据。单击成绩按钮后，它 selects 并返回相关数据，但网格不显示这些数据。

所以我的问题是，我应该如何更正我的编码，以便查看返回的数据？

我的编码如下

Index.cshtml

@model School_MGT.Models.Students

<div class="container">
    <div class="container">
        <form asp-controller="AttendenceStudents" asp-action="Index">
            <p align="center">
                <input type="submit" name="btn" value="1A" />
                <input type="submit" value="1B" name="btn" />
            </p>
        </form>
    </div>
</div>
@(Html.Kendo().Grid<School_MGT.Models.Students>()
    .Name("Grid")
    .Columns(columns =>
        {
            columns.Bound(p => p.Add_No);
        columns.Bound(p => p.S_Name).Width(140);
        columns.Bound(p => p.Tel_H).Width(140);

    })
    .ToolBar(toolbar =>
        {
        toolbar.Create();
        toolbar.Save();
        })
    .Editable(editable => editable.Mode(GridEditMode.InCell))
    .Pageable()
    .Navigatable()
    .Sortable()
    .Scrollable()
    .Resizable(resize => resize.Columns(true))
    .DataSource(dataSource => dataSource
        .Ajax()
        .Batch(true)
        .PageSize(20)
        .ServerOperation(false)        
        .Model(model => model.Id(p => p.Add_No))
        .Update("Update", "AttendenceStudents")
    )
)

AttendenceStudentsController

namespace School_MGT.Controllers
{
    public class AttendenceStudentsController : Controller
    {
        private readonly ConnectionString _context;

        public AttendenceStudentsController(ConnectionString context)
        {
            _context = context;
        }
        public IActionResult Index()
        {
            return View();
        }
        [HttpPost]
        public  IActionResult Index(string btn)
        {
            var Students = from m in _context.Students select m;
            switch (btn)
            {
                case "1A":
                    Students = Students.Where(x => x.Grade == "1" && x.Class == "A");
                    return View();

                case "1B":
                Students = Students.Where(x => x.Grade == "1" && x.Class == "B");
                    return View();

                default:                   
                    return (View());
            }
        }

        [HttpPost]
        public IActionResult Update([Bind("RowID,Add_No,S_Name")] Students target)

        {
            Students entity = _context.Students.FirstOrDefault((r => r.Add_No == target.Add_No));            
            entity.Tel_H = target.Tel_H;           
            _context.SaveChanges();
            return View();
        }
    }
}

Answer 1

感谢所有查看我的问题并尝试回答的人。我通过修改 Index 方法和 view.cshtml

解决了我的问题

 public async Task<IActionResult> Index(string btn)
        {

            var Students = from m in _context.Students select m;

            switch (btn)
            {
                case "1A":
                    Students = Students.Where(x => x.Grade == "1" && x.Class == "A");
                    return View(await Students.ToListAsync());

                case "1B":
                Students = Students.Where(x => x.Grade == "1" && x.Class == "B");
                    return View(await Students.ToListAsync());

                default:

                    return (View(await Students.ToListAsync()));
            }          

        }

将以下更改应用于模型和网格

@model IEnumerable<School_MGT.Models.Students>

@(Html.Kendo().Grid(Model)

如何在提交包含结果数据的表单后将返回的数据绑定到 Telerik ASP.Net 核心网格

How to bind returned data to a Telerik ASP.Net Core grid after submitting a form with resulted data

c#

telerik-grid

asp.net-core