如何隐藏在局部视图链接取决于从控制器

Question

返回我有这两条线在.cshtml值：

<li><a href="@Url.Action("GetAllVehicleLocations", "VehicleReporting", new { @class = "page-scroll" })">All Vehicle Locations</a></li> 

<li><a href="@Url.Action("GetToBeDoneVehicles", "VehicleReporting", new { @class = "page-scroll" })">To Be Done Vehicles</a></li> 

我想隐藏这些超链接根据从控制器返回的值。该值是一个ClientID。如果ClientID = 1，则隐藏链接，否则使其可见。

我已经尝试了各种不同的实现，下面是我的最后一个。

.cshtml：

if (@Html.Action("GetSelectedClientID", "VehicleReporting") != 1) 
{ 
    <li><a href="@Url.Action("GetAllVehicleLocations", "VehicleReporting", new {@class = "page-scroll"})">All Vehicle Locations</a></li> 
    <li><a href="@Url.Action("GetToBeDoneVehicles", "VehicleReporting", new {@class = "page-scroll"})">To Be Done Vehicles</a></li> 
} 

控制器：

[Authorize] 
[HttpGet] 
public ActionResult GetSelectedClientID() 
{ 
    selectedClientId = HelperMethods.GetClientId(); 
    return PartialView(selectedClientId); 
} 

任何帮助理解。请注意，我是MVC的新手！

Answer 1

你的控制器应在这种情况下返回纯文本或者你可以返回JSON和使用Ajax调用了这一点，但下面应该让你去：

[Authorize] 
[HttpGet] 
public ActionResult GetSelectedClientID() 
{ 
    var selectedClientId = HelperMethods.GetClientId().ToString(); 
    return Content(selectedClientId); 
} 

，现在鉴于你可以检查返回的字符串值：

@if(Html.Action("GetSelectedClientID", "VehicleReporting").ToString() != "1") 
{ 
    <li><a href="@Url.Action("GetAllVehicleLocations", "VehicleReporting", new {@class = "page-scroll"})">All Vehicle Locations</a></li> 
    <li><a href="@Url.Action("GetToBeDoneVehicles", "VehicleReporting", new {@class = "page-scroll"})">To Be Done Vehicles</a></li> 
} 

Answer 2

如果我理解正确，您希望根据值有条件地隐藏部分视图。

你可以使用ViewData字典在你的主要行动：

[Authorize] 
[HttpGet] 
public ActionResult MyAction() 
{ 
    ViewData["selectedClientId"] = HelperMethods.GetClientId(); 
    return View(); 
} 

并且在视图检查它的价值是这样的：

@if (ViewData["selectedClientId"] != 1) 
{ 
    <li><a href="@Url.Action("GetAllVehicleLocations", "VehicleReporting", new {@class = "page-scroll"})">All Vehicle Locations</a></li> 
    <li><a href="@Url.Action("GetToBeDoneVehicles", "VehicleReporting", new {@class = "page-scroll"})">To Be Done Vehicles</a></li> 
}