使用ASP.NET MVC3 WebGrid，如何设置列排序，以便单击列标题在升序排序和降序排序之间切换？
谢谢！
罗布
答案 0 :(得分：2)
根本问题结果是一个格式错误的专栏。 columnName实际上与实际的columnName不匹配（它被设置为标题文本）。此问题被隐藏，因为格式指定了Html.ActionLink。
更改列定义以使columnName正确（并且标头设置为实际标头值）更正了问题。
答案 1 :(得分：1)
注1：使用Razor语法进行标记，将C＃用作ServerSide代码。
注2：排序的基本设置知识来自Sorting, Filtering, and Paging with the Entity Framework Tutorial但我需要的控制和杠杆比他们为简单示例提供的更多。
因此...
这是网格的最终结果视图视图
这是我在Index Action上的ServerSide代码（所以当我的页面加载时）（再次参见上面的链接以获取更多背景信息）
public ViewResult Index(string sortOrder)
{
// Set the defaults
ViewBag.FirstNameSortParam = "First Name desc";
ViewBag.LastNameSortParam = "Last Name desc";
ViewBag.CitySortParam = "City desc";
ViewBag.StateSortParam = "State desc";
ViewBag.DOBSortParam = "DOB desc";
var students = from s in db.Students select s;
switch (sortOrder)
{
case "First Name desc":
students = students.OrderByDescending(s => s.FirstName);
ViewBag.FirstNameSortParam = sortOrder;
break;
case "First Name asc":
students = students.OrderBy(s => s.FirstName);
ViewBag.FirstNameSortParam = sortOrder;
break;
case "Last Name desc":
students = students.OrderByDescending(s => s.LastName);
ViewBag.LastNameSortParam = sortOrder;
break;
case "Last Name asc":
students = students.OrderBy(s => s.LastName);
ViewBag.LastNameSortParam = sortOrder;
break;
case "City desc":
students = students.OrderByDescending(s => s.StudentAddress.City);
ViewBag.CitySortParam = sortOrder;
break;
case "City asc":
students = students.OrderBy(s => s.StudentAddress.City);
ViewBag.CitySortParam = sortOrder;
break;
case "State desc":
students = students.OrderByDescending(s => s.StudentAddress.State);
ViewBag.StateSortParam = sortOrder;
break;
case "State asc":
students = students.OrderBy(s => s.StudentAddress.State);
ViewBag.StateSortParam = sortOrder;
break;
case "DOB desc":
students = students.OrderByDescending(s => s.DOB);
ViewBag.DOBSortParam = sortOrder;
break;
case "DOB asc":
students = students.OrderBy(s => s.DOB);
ViewBag.DOBSortParam = sortOrder;
break;
default:
students = students.OrderByDescending(s => s.StudentID);
break;
}
return View(students.ToList());
}
第一次运行时，“sortOrder”当然是null。但是，下面的模式演示了我如何完成“姓氏”列的切换。另外，请注意我将默认的第一个状态设置为Descending。或者，如果您希望Ascending作为用户点击链接时注册的第一个状态，您可以翻转它。为了我的目的，“降序”效果最佳。
@{
string fnSort = ViewBag.FirstNameSortParam;
string lnSort = ViewBag.LastNameSortParam;
string citySort = ViewBag.CitySortParam;
string stateSort = ViewBag.StateSortParam;
string dobSort = ViewBag.DOBSortParam;
}
<table>
<tr>
<th>
@{
if (fnSort != "First Name desc")
{
fnSort = "First Name desc";
}else{
fnSort = "First Name asc";
}
}
@Html.ActionLink("First Name", "Index", new { sortOrder = fnSort })
</th>
<th>
@{
if (lnSort != "Last Name desc")
{
lnSort = "Last Name desc";
}else{
lnSort = "Last Name asc";
}
}
@Html.ActionLink("Last Name", "Index", new { sortOrder = lnSort })
</th>
<th>
Email
</th>
<th>
Phone Number
</th>
<th>
@{
if (citySort != "City desc")
{
citySort = "City desc";
}else{
citySort = "City asc";
}
}
@Html.ActionLink("City", "Index", new { sortOrder = citySort })
</th>
<th>
@{
if (stateSort != "State desc")
{
stateSort = "State desc";
}else{
stateSort = "State asc";
}
}
@Html.ActionLink("State", "Index", new { sortOrder = stateSort })
</th>
<th>
@{
if (dobSort != "DOB desc")
{
dobSort = "DOB desc";
}else{
dobSort = "DOB asc";
}
}
@Html.ActionLink("DOB", "Index", new { sortOrder = dobSort })
</th>
<th></th>
</tr>
@foreach (var item in Model) {
<tr>
<td>
@Html.DisplayFor(modelItem => item.FirstName)
</td>
<td>
@Html.DisplayFor(modelItem => item.LastName)
</td>
<td>
@Html.DisplayFor(modelItem => item.Email)
</td>
<td>
@Html.DisplayFor(modelItem => item.PhoneNumber)
</td>
<td>
@Html.DisplayFor(modelItem => item.StudentAddress.City)
</td>
<td>
@Html.DisplayFor(modelItem => item.StudentAddress.State)
</td>
<td>
@Html.DisplayFor(modelItem => item.DOB)
</td>
<td>
@Html.ActionLink("Edit", "Edit", new { id=item.StudentID }) |
@Html.ActionLink("Details", "Details", new { id=item.StudentID }) |
@Html.ActionLink("Delete", "Delete", new { id=item.StudentID })
</td>
</tr>
}
</table>
希望这会有所帮助。如果您需要更多帮助，请告诉我们！我很自豪能帮忙（如果可以的话）
干杯！