我找到了一些“解决方案”。

这段代码不起作用:

<table>
<thead>
    <tr>
        <th colspan="3">Test</th>
    </tr>
</thead>
<tbody>
    <tr>
        <td>1</td>
        <td>2</td>
        <td>3</td>
    </tr>
</tbody>

但这是可以的:

<table>
<thead>
    <tr>
        <th colspan="2">Test</th>
        <th></th>
    </tr>
</thead>
<tbody>
    <tr>
        <td>1</td>
        <td>2</td>
        <td>3</td>
    </tr>
</tbody>

我认为，问题是，最后一个TH不能有colspan属性。

对我来说，这个问题与上面给出的答案略有不同。对我来说，HTML标记很好，但是javascript中的一列缺失了，并且与HTML不匹配。

i.e.

<table id="companies-index-table" class="table table-responsive-sm table-striped">

                            <thead>
                            <tr>
                                <th>Id</th>
                                <th>Name</th>
                                <th>Created at</th>
                                <th>Updated at</th>
                                <th>Count</th>
                            </tr>
                            </thead>
                            <tbody>
                            @foreach($companies as $company)
                                <tr>
                                    <td>{{ $company->id }}</td>
                                    <td>{{ $company->name }}</td>
                                    <td>{{ $company->created_at }}</td>
                                    <td>{{ $company->updated_at }}</td>
                                    <td>{{ $company->count }}</td>
                                </tr>
                            @endforeach
                            </tbody>
                        </table>

我的脚本:

<script>
        $(document).ready(function() {
            $('#companies-index-table').DataTable({
                serverSide: true,
                processing: true,
                responsive: true,
                    ajax: "{{ route('admincompanies.datatables') }}",
                columns: [
                    { name: 'id' },
                    { name: 'name' },
                    { name: 'created_at' },
                    { name: 'updated_at' },     <-- I was missing this line so my columns didn't match the thead section.
                    { name: 'count', orderable: false },
                ],
            });
        });
    </script>

我有一个动态生成的，但格式糟糕的表，有一个错字。我错误地在另一个<td>内复制了一个<td>标签。列数匹配。我有<thead>和<tbody>标签。所有内容都匹配，除了这个我一时没有注意到的小错误，因为我的专栏中有很多链接和图像标签。

除了不一致的数字之外，数据表脚本列部分中缺少的项目也会导致这种情况。修正这修正了我的数据表搜索栏。

我说的是这部分;

"columns": [
  null,
  .
  .
  .
  null
           ],

我在这个错误中苦苦挣扎，直到有人指出，这个部分的“null”比我的总人头数少一个。

In my case, and using ASP.NET GridView, UpdatePanel and with DropDownList (with Chosen plugin where I reset value to zero using a Javascript line), I got this error and tried everything with no hope for days. The problem was that the code of my dropdown in code behind was as follows and when I select a value twice to apply its action to selected grid rows I get that error. I thought for days it's a Javascript issue (again, in my case) and finally the fix was giving zero for the drowpdown value with the update process:

  private void ddlTasks_SelectedIndexChanged(object sender, System.EventArgs e)
  {
     if (ddlTasks.SelectedValue != 0) {
        ChangeStatus(ddlTasks.SelectedValue);
        ddlTasks.SelectedValue = "0"; //// **This fixed my issue**
     }

     dvItemsGrid.DataSource = CreateDatasource();
     dvItemsGrid.DataBind();
     dvItemsGrid.UseAccessibleHeader = true;
     dvItemsGrid.HeaderRow.TableSection = TableRowSection.TableHeader;

  }

这是我的错:

     $('#<%= DropDownList.ClientID%>').val('0').trigger("chosen:updated").chosen();

如何在。net MVC视图中成功地渲染一个数据表，这个问题让我抓狂。这工作:

 **@model List<Student>
 @{
    ViewData["Title"] = "Index";
}
 <h2>NEW VIEW Index</h2>
 <table id="example" class="display" style="width:100%">
   <thead>
   <tr>
   <th>ID</th>
    <th>Firstname</th>
    <th>Lastname</th> 
  </tr>
  </thead>
  <tbody>
@foreach (var element in Model)
{
    <tr>
    <td>@Html.DisplayFor(m => element.ID)</td>
    <td>@Html.DisplayFor(m => element.FirstName)</td>
    <td>@Html.DisplayFor(m => element.LastName)</td>
    </tr>

}
</tbody>
</table>**

JS文件中的脚本:

**$(document).ready(function () {
    $('#example').DataTable();
});**