我的视图由外部JavaScript而不是视图本身显示。如何在jqgrid中删除多行？我将multiselect和multiboxonly设置为等于true。这是我的代码
查看（视图格式为＆＃34;〜/ Scripts / TodoList.js＆＃34;）
@{
ViewBag.Title = "Index";
}
<h2>TodoList</h2>
<div>
<table id="grid"></table>
<div id="pager"
</div>
<link type="text/css" rel="stylesheet" href="http://code.jquery.com/ui/1.10.3/themes/smoothness/jquery-ui.css" />
<a href="javascript:void(0)" id="m1">Get Selected id's</a>
<link href="~/Content/themes/base/jquery-ui.css" rel="stylesheet" />
<link href="~/Content/jquery.jqGrid/ui.jqgrid.css" rel="stylesheet" />
<script src="~/Scripts/jquery-1.9.1.min.js" type="text/javascript"></script>
<script src="http://code.jquery.com/ui/1.10.3/jquery-ui.js"></script>
@*<script src="~/Scripts/jquery-1.12.4.min.js" type ="text/javascript"></script>*@
<script src="~/Scripts/i18n/grid.locale-en.js" type="text/javascript"></script>
<script src="~/Scripts/jquery.jqGrid.min.js" type="text/javascript"></script>
<script src="~/Scripts/TodoList.js" type="text/javascript"></script>
Todolist.js（Jqgrid）
/* File Created: February 17, 2017 */
$(function () {
$("#grid").jqGrid({
url: "/TodoList/GetTodoLists",
datatype: 'json',
mtype: 'Get',
colNames: ['Id', 'Task Name', 'Task Description', 'Target Date', 'Severity', 'Task Status'],
colModel: [
{ key: true, hidden: true, name: 'Id', index: 'Id', editable: true },
{ key: false, name: 'TaskName', index: 'TaskName', editable: true },
{ key: false, name: 'TaskDescription', index: 'TaskDescription', editable: true },
{
key: false, name: 'TargetDate', id: "elem", index: 'TargetDate', editable: true, formatter: 'date', formatoptions: { newformat: 'd/m/Y' },
editoptions: { dataInit: function (elem) { $(elem).datepicker(); } }
},
{ key: false, name: 'Severity', index: 'Severity', editable: true, edittype: 'select', editoptions: { value: { 'L': 'Low', 'M': 'Medium', 'H': 'High'}} },
{ key: false, name: 'TaskStatus', index: 'TaskStatus', editable: true, edittype: 'select', editoptions: { value: { 'A': 'Active', 'I': 'InActive'}}}],
pager: jQuery('#pager'),
rowNum: 10,
rowList: [10, 20, 30, 40],
height: '100%',
viewrecords: true,
// Bug Codes
// loadonce:true, //compulsory for search
//cellEdit: true, //inline edits
//cellsubmit: 'clientArray', //inline edit
caption: 'Todo List',
sortname: 'id',
sortorder: 'desc',
multiselect: true,
multiboxonly: true,
emptyrecords: 'No records to display',
jsonReader: {
root: "rows",
page: "page",
total: "total",
records: "records",
repeatitems: false,
Id: "0"
},
autowidth: true,
}).navGrid('#pager', { edit: true, add: true, del: true, search: true, refresh: true }, //search: true
{
// edit options
zIndex: 100,
url: '/TodoList/Edit',
closeOnEscape: true,
closeAfterEdit: true,
recreateForm: true,
afterComplete: function (response) {
if (response.responseText) {
alert(response.responseText);
}
}
},
{
// add options
zIndex: 100,
url: "/TodoList/Create",
closeOnEscape: true,
closeAfterAdd: true,
afterComplete: function (response) {
if (response.responseText) {
alert(response.responseText);
}
}
},
{
//delete options
zIndex: 100,
url: "/TodoList/Delete" + ,
closeOnEscape: true,
closeAfterDelete: true,
recreateForm: true,
msg: "Are you sure you want to delete this task?",
afterComplete: function (response) {
if (response.responseText) {
alert(response.responseText);
}
}
});
});
控制器
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;
using System.Data;
using TodoListApplication.DBContext;
using TodoListApplication.Models;
namespace TodoListApplication.Controllers
{
public class TodoListController : Controller
{
//
// GET: /TodoList/
public ActionResult Index()
{
return View();
}
TodoContext db = new TodoContext();
public JsonResult GetTodoLists(string sidx, string sord, int page, int rows) //Gets the todo Lists.
{
int pageIndex = Convert.ToInt32(page) - 1;
int pageSize = rows;
var todoListsResults = db.TodoLists.Select(
a => new
{
a.Id,
a.Severity,
a.TargetDate,
a.TaskDescription,
a.TaskName,
a.TaskStatus
});
int totalRecords = todoListsResults.Count();
var totalPages = (int)Math.Ceiling((float)totalRecords / (float)rows);
if (sord.ToUpper() == "DESC")
{
todoListsResults = todoListsResults.OrderByDescending(s => s.TaskName);
todoListsResults = todoListsResults.Skip(pageIndex * pageSize).Take(pageSize);
}
else
{
todoListsResults = todoListsResults.OrderBy(s => s.TaskName);
todoListsResults = todoListsResults.Skip(pageIndex * pageSize).Take(pageSize);
}
var jsonData = new
{
total = totalPages,
page,
records = totalRecords,
rows = todoListsResults
};
return Json(jsonData, JsonRequestBehavior.AllowGet);
}
// TODO:insert a new row to the grid logic here
[HttpPost]
public string Create([Bind(Exclude = "Id")] TodoList objTodo)
{
string msg;
try
{
if (ModelState.IsValid)
{
db.TodoLists.Add(objTodo);
db.SaveChanges();
msg = "Saved Successfully";
}
else
{
msg = "Validation data not successful";
}
}
catch (Exception ex)
{
msg = "Error occured:" + ex.Message;
}
return msg;
}
public string Edit(TodoList objTodo)
{
string msg;
try
{
if (ModelState.IsValid)
{
db.Entry(objTodo).State = EntityState.Modified;
db.SaveChanges();
msg = "Saved Successfully";
}
else
{
msg = "Validation data not successfull";
}
}
catch (Exception ex)
{
msg = "Error occured:" + ex.Message;
}
return msg;
}
public string Delete(int Id)
{
TodoList todolist = db.TodoLists.Find(Id);
db.TodoLists.Remove(todolist);
db.SaveChanges();
return "Deleted successfully";
}
}
}
答案 0 :(得分：2)
jqGrid在multiselect: true模式下删除行时发送以逗号分隔的id列表。因此，您应该将string Delete(int Id)更改为void Delete(string id)。相应的代码可以是以下内容：
public void Delete(string id)
{
var ids = id.Split(',');
foreach (var id in ids) {
TodoList todolist = db.TodoLists.Find(int.Parse(id));
db.TodoLists.Remove(todolist);
}
db.SaveChanges();
}
我建议您考虑使用loadonce: true选项，并一次性简化您的共同返回所有项目。这是显示少量行的最佳方案（例如，少于1000）。它将简化您的服务器代码并改善网格的性能（责任）。
我建议您另外验证是否使用最新版本的free jqGrid（可以从NuGet下载或直接从CDN加载）。您应该查看您使用的jqGrid选项，并删除不需要的或错误的选项/参数。
答案 1 :(得分：0)
我已经在@Oleg代码的帮助下解决了我的问题。
第一： 我发现我的控制器用来传递id的id名称是“id”，而我的控制器中的delete方法是“Id”：
public string Delete(int Id) // < see this
{
TodoList todolist = db.TodoLists.Find(Id);
db.TodoLists.Remove(todolist);
db.SaveChanges();
return "Deleted successfully";
}
click here to see the debug result, pay attention to Form Data Section
因此，控制器指定的id与我在删除方法中指定的id之间存在名称不匹配
第二： 所以我在控制器中修改了我的删除方法，成为：
public ActionResult Delete(string id)
{
var ids = id.Split(',');
foreach (var idsss in ids)
{
TodoList todolist = db.TodoLists.Find(int.Parse(idsss));
db.TodoLists.Remove(todolist);
}
db.SaveChanges();
var result = new { msg = "Deletion Successful ! " };
return Json(result, JsonRequestBehavior.AllowGet);
}
现在它可以使用，感谢@Oleg！