关于c#：必须先绑定数据源才能在MVC 5上执行此操作

A data source must be bound before this operation can be performed on MVC 5

我正在尝试在视图上显示网格，但在网格上出现错误。这是视图

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@{var grid = new WebGrid(Model, canPage: true, rowsPerPage: 20,
selectionFieldName:"selectedRow", ajaxUpdateContainerId:"gridContent");
grid.Pager(WebGridPagerModes.NextPrevious);
ViewBag.Title ="Data results";
}

@{
ViewBag.Title ="Results";
Layout ="~/Views/Shared/_InternalLayout.cshtml";
}

Data Results

<p class="text-success">@ViewBag.Result</p>
<p class="text-danger">@Html.ValidationMessage("Error")</p>

@using (Html.BeginForm("ReportTable","ControllerName", FormMethod.Get))
{
@grid.GetHtml(

tableStyle:"webGrid2 ReportTable",
headerStyle:"header",
alternatingRowStyle:"alt",
selectedRowStyle:"select",
columns: grid.Columns(
grid.Column("Number","Destination", canSort: false),
grid.Column("Received","Receive Time", canSort: false),
grid.Column("Message","Message", canSort: false),
grid.Column("Resubmit", format: @<text><input class="chkbox" id="resubChkbx" name="ResubmitChkbx" type="checkbox" value="@item.ID" /></text>)
))}

这是控制器

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public ActionResult ReportTable()
{
return View("ReportTable");

}

我得到的错误代码如下：

A data source must be bound before this operation can be performed

并突出显示@grid.Gethtml