ajax删除DB数据

1.前台js

 1 $().ready(function () {
 2
 3     $(‘[name="checkAll"]‘).click(function () {
 4         if ("checked" == $(‘input[name="checkAll"]‘).attr("checked")) {
 5             $(‘input[type="checkbox"]‘).attr("checked", "checked");
 6         } else {
 7             $(‘input[type="checkbox"]‘).removeAttr("checked");
 8         }
 9     });
10
11     $(‘input[name="btnDelete"]‘).click(function () {
12         var checkCount = 0;
13
14         $(‘input[type="checkbox"]‘).not(‘input[name="checkAll"]‘).each(function (index, element) {
15             if ("checked" == $(this).attr("checked")) {
16                 checkCount++;
17             }
18         });
19
20         if (checkCount <= 0) {
21             alert("请选择您要删除的数据！");
22             return false;
23         }
24
25         if (confirm("确定要删除吗？")) {
26             var data = "[";
27
28             $(‘input[type="checkbox"]‘).not(‘input[name="checkAll"]‘).each(function (index, element) {
29                 if ("checked" == $(this).attr("checked")) {
30                     data += "{id : " + $(this).val() + "} ,";
31                 }
32             });
33
34             if (data != "[") {
35                 data = data.substring(0, data.length - 1) + "]";
36
37                 $.post("/User/DeleteById", data, function success(result) {
38                     //1.ajax返回单个字符串内容
39                     //var msg = " <font style=‘color:red‘>" + result + "</font>";
40                     //if ($(‘#ajaxMsg‘).html() == ‘‘) {
41                     //    $(‘#ajaxMsg‘).append(msg);
42                     //}
43
44                     //2.ajax返回多个字符串内容
45                     var msg = " <font style=‘color:red‘>删除成功！</font>";
46                     if ($(‘#ajaxMsg‘).html() == ‘‘) {
47                         $(‘#ajaxMsg‘).append(msg);
48                     }
49
50                     $(‘input[name="checkAll"]‘).removeAttr("checked");
51
52                     $(‘input[type="checkbox"]‘).not(‘input[name="checkAll"]‘).each(function (index, element) {
53                         $(this).parent().parent().remove();
54                     });
55
56                     var ajaxResult = $.parseJSON(result);
57                     $.each(ajaxResult, function (index, element) {
58                         var tr = "<tr>"
59                                   + "<td><input type=‘checkbox‘ value=‘" + element.ID + "‘ /></td>"
60                                   + "<td><a href=‘/User/Detail/" + element.ID + "‘>" + element.UserName + "</a></td>"
61                                   + "<td>" + element.Phone + "</td>"
62                                   + "<td>" + element.Email + "</td>"
63                                   + "<td>" + element.Address + "</td>"
64                                   + "<td>" + element.CreateTime + "</td>"
65                                   + "<td>" + element.UpdateTime + "</td>"
66                                   + "<td><a href=‘/User/Edit/" + element.ID + "‘>修改</a></td>"
67                                   + "<td><a href=‘/User/Delete/" + element.ID + "‘>删除</a></td>"
68                                   + "</tr>";
69                         $(‘table‘).append(tr);
70                     });
71                 });
72             }
73         }
74     });
75 });

2.后台代码：

[HttpPost]
        public ActionResult DeleteById()
        {
            String ajaxId = Request.Params[0];

            JavaScriptSerializer js = new JavaScriptSerializer();
            List<AjaxReq> ajaxReqList = js.Deserialize<List<AjaxReq>>(ajaxId);
            if (null != ajaxReqList && 0 < ajaxReqList.Count())
            {
                foreach (AjaxReq ajaxReq in ajaxReqList)
                {
                    UserDto user = new UserDto();
                    user.ID = ajaxReq.ID;
                    db.Entry<UserDto>(user).State = System.Data.EntityState.Deleted;
                    db.SaveChanges();
                }
            }

            List<UserDto> userList = db.Users.ToList();

            //1.ajax返回单个字符串内容
            //return base.Json("删除成功！");

            //2.ajax返回多个字符串内容
            return base.Json(js.Serialize(userList));

        }