您可以使用 ViewBag 作为 MVC 3 WebGrid 中的数据源吗？答案

【问题标题】：Can you use ViewBag as a datasource in an MVC 3 WebGrid?您可以使用 ViewBag 作为 MVC 3 WebGrid 中的数据源吗？
【发布时间】：2011-03-13 22:42:15
【问题描述】：

如果是这样，语法是什么。我没有找到太多文档，而且我所拥有的也不起作用。

控制器类：

public ActionResult Results()
    {                   

        List<GMUOverview> _results = new List<GMUOverview>
        {
            new GMUOverview { GMU = "EE00101R", UnitsIncluded = "12,13,14", SuccessRate = "19%", MinReqResPoints = "3", MinReqNResPoints="5", AvailableLicenses="123", TotalApplications=221, Season="1", Year="2009" },
            new GMUOverview { GMU = "EE00102R", UnitsIncluded = "12,13,64", SuccessRate = "19%", MinReqResPoints = "3", MinReqNResPoints="5", AvailableLicenses="123", TotalApplications=221, Season="1", Year="2009" },
            new GMUOverview { GMU = "EE00103R", UnitsIncluded = "12,43,14", SuccessRate = "21%", MinReqResPoints = "4", MinReqNResPoints="5", AvailableLicenses="123", TotalApplications=221, Season="1", Year="2009" },
            new GMUOverview { GMU = "EE00104R", UnitsIncluded = "22,13,14", SuccessRate = "22%", MinReqResPoints = "5", MinReqNResPoints="5", AvailableLicenses="123", TotalApplications=221, Season="1", Year="2009" },
            new GMUOverview { GMU = "EE00105R", UnitsIncluded = "12,13,14", SuccessRate = "33%", MinReqResPoints = "6", MinReqNResPoints="5", AvailableLicenses="123", TotalApplications=221, Season="1", Year="2009" },
            new GMUOverview { GMU = "EE00106R", UnitsIncluded = "12,13,14", SuccessRate = "44%", MinReqResPoints = "7", MinReqNResPoints="5", AvailableLicenses="123", TotalApplications=221, Season="1", Year="2009" },
        };


        ViewBag.Result = _results;        

        return View();
    }

查看：

@using (Html.BeginForm())
{   

@{
    var grid = new WebGrid(ViewBag.Result);

      <div id="grid"> 
        @grid.GetHtml() 
    </div> 

 }

}

【问题讨论】：

标签： asp.net asp.net-mvc asp.net-mvc-3 razor

【解决方案1】：

您为什么使用ViewBag 而不是视图模型和强类型视图？这是丑陋/糟糕/弱输入/废话/（在这里放任何你能想到的坏词/诅咒）？

如果尽管我咆哮你还是决定使用ViewBag，那么正确的语法如下：

@{
    var grid = new WebGrid(ViewBag.Result);
}

@using (Html.BeginForm())
{   
    <div id="grid"> 
        @grid.GetHtml() 
    </div> 
}

当然是使用视图模型的正确方法：

public ActionResult Results()
{                   
    var _results = new List<GMUOverview>
    {
        new GMUOverview { GMU = "EE00101R", UnitsIncluded = "12,13,14", SuccessRate = "19%", MinReqResPoints = "3", MinReqNResPoints="5", AvailableLicenses="123", TotalApplications=221, Season="1", Year="2009" },
        new GMUOverview { GMU = "EE00102R", UnitsIncluded = "12,13,64", SuccessRate = "19%", MinReqResPoints = "3", MinReqNResPoints="5", AvailableLicenses="123", TotalApplications=221, Season="1", Year="2009" },
        new GMUOverview { GMU = "EE00103R", UnitsIncluded = "12,43,14", SuccessRate = "21%", MinReqResPoints = "4", MinReqNResPoints="5", AvailableLicenses="123", TotalApplications=221, Season="1", Year="2009" },
        new GMUOverview { GMU = "EE00104R", UnitsIncluded = "22,13,14", SuccessRate = "22%", MinReqResPoints = "5", MinReqNResPoints="5", AvailableLicenses="123", TotalApplications=221, Season="1", Year="2009" },
        new GMUOverview { GMU = "EE00105R", UnitsIncluded = "12,13,14", SuccessRate = "33%", MinReqResPoints = "6", MinReqNResPoints="5", AvailableLicenses="123", TotalApplications=221, Season="1", Year="2009" },
        new GMUOverview { GMU = "EE00106R", UnitsIncluded = "12,13,14", SuccessRate = "44%", MinReqResPoints = "7", MinReqNResPoints="5", AvailableLicenses="123", TotalApplications=221, Season="1", Year="2009" },
    };
    return View(_results);
}

然后：

@model System.Collections.Generic.List<AppName.Models.GMUOverview>
@{
    var grid = new WebGrid(Model);
}

@using (Html.BeginForm())
{   
    <div id="grid"> 
        @grid.GetHtml() 
    </div> 
}

【讨论】：

我想使用 ViewModel，但我已经在页面上使用了另一个模型，并从该冲突中得到错误。如果我能过去，我不会使用 ViewBag。谢谢！
@KeelRisk，只需为当前模型创建另一个属性以保存 Grid 数据源 List<GMUOverview> 。因此，您可以混合当前模型和数据源。这就是使用 View Model 的原因。仅供您查看，不会中断模型中的其他数据。