C# 对编辑和新建操作使用相同的局部视图 .NET 4.51，MVC 5

我有一个视图Edit.cshtml，如下所示：

@model EnergyMission.Country.Dtos.GetCountryOutput

@{
    ViewBag.Title = "Edit Country";
    Layout = "~/Views/Shared/_Layout.cshtml";
}             

@Html.Partial("_AddEditPartial", new ViewDataDictionary { { "ActionName", "Edit" } })

@model EnergyMission.Country.Dtos.GetNewCountryOutput

@{
    ViewBag.Title = "New Country";
    Layout = "~/Views/Shared/_Layout.cshtml";
}

@Html.Partial("_AddEditPartial", new ViewDataDictionary { { "ActionName", "Create" } })

@model  EnergyMission.Country.Dtos.GetCountryOutput

<h3>@ViewData["ActionName"]</h3>

@using (Html.BeginForm(@ViewData["ActionName"], "Countries"))
{
    @Html.AntiForgeryToken()

    <div class="form-horizontal">
        <h4>CountryTableModel</h4>
        <hr />
        @Html.ValidationSummary(true, "", new { @class = "text-danger" })
        <div class="form-group">
            @Html.LabelFor(model => model.AbbreviationCode, htmlAttributes: new { @class = "control-label col-md-2" })
            <div class="col-md-10">
                @Html.EditorFor(model => model.AbbreviationCode, new { htmlAttributes = new { @class = "form-control" } })
                @Html.ValidationMessageFor(model => model.AbbreviationCode, "", new { @class = "text-danger" })
            </div>
        </div>

        <div class="form-group">
            @Html.LabelFor(model => model.InternationalCountryDialCode, htmlAttributes: new { @class = "control-label col-md-2" })
            <div class="col-md-10">
                @Html.EditorFor(model => model.InternationalCountryDialCode, new { htmlAttributes = new { @class = "form-control" } })
                @Html.ValidationMessageFor(model => model.InternationalCountryDialCode, "", new { @class = "text-danger" })
            </div>
        </div>

        <div class="form-group">
            @Html.LabelFor(model => model.Name, htmlAttributes: new { @class = "control-label col-md-2" })
            <div class="col-md-10">
                @Html.EditorFor(model => model.Name, new { htmlAttributes = new { @class = "form-control" } })
                @Html.ValidationMessageFor(model => model.Name, "", new { @class = "text-danger" })
            </div>
        </div>
    </div>
}

然后新建.cshtml，如下所示：

@model EnergyMission.Country.Dtos.GetCountryOutput

@{
    ViewBag.Title = "Edit Country";
    Layout = "~/Views/Shared/_Layout.cshtml";
}             

@Html.Partial("_AddEditPartial", new ViewDataDictionary { { "ActionName", "Edit" } })

@model EnergyMission.Country.Dtos.GetNewCountryOutput

@{
    ViewBag.Title = "New Country";
    Layout = "~/Views/Shared/_Layout.cshtml";
}

@Html.Partial("_AddEditPartial", new ViewDataDictionary { { "ActionName", "Create" } })

@model  EnergyMission.Country.Dtos.GetCountryOutput

<h3>@ViewData["ActionName"]</h3>

@using (Html.BeginForm(@ViewData["ActionName"], "Countries"))
{
    @Html.AntiForgeryToken()

    <div class="form-horizontal">
        <h4>CountryTableModel</h4>
        <hr />
        @Html.ValidationSummary(true, "", new { @class = "text-danger" })
        <div class="form-group">
            @Html.LabelFor(model => model.AbbreviationCode, htmlAttributes: new { @class = "control-label col-md-2" })
            <div class="col-md-10">
                @Html.EditorFor(model => model.AbbreviationCode, new { htmlAttributes = new { @class = "form-control" } })
                @Html.ValidationMessageFor(model => model.AbbreviationCode, "", new { @class = "text-danger" })
            </div>
        </div>

        <div class="form-group">
            @Html.LabelFor(model => model.InternationalCountryDialCode, htmlAttributes: new { @class = "control-label col-md-2" })
            <div class="col-md-10">
                @Html.EditorFor(model => model.InternationalCountryDialCode, new { htmlAttributes = new { @class = "form-control" } })
                @Html.ValidationMessageFor(model => model.InternationalCountryDialCode, "", new { @class = "text-danger" })
            </div>
        </div>

        <div class="form-group">
            @Html.LabelFor(model => model.Name, htmlAttributes: new { @class = "control-label col-md-2" })
            <div class="col-md-10">
                @Html.EditorFor(model => model.Name, new { htmlAttributes = new { @class = "form-control" } })
                @Html.ValidationMessageFor(model => model.Name, "", new { @class = "text-danger" })
            </div>
        </div>
    </div>
}

从上面可以看出：

每个都有一个不同的模型，即GetCountryOutput和GetNewCountryOutput。两者具有相同的属性。目前，由于其他原因，它们不能成为同一类

我传递动作名称，以便在局部视图中的Html.BeginForm中使用它

我仍然需要弄清楚如何将模型类型传递给局部视图

\u addeditparticle.cshtml如下所示：

@model EnergyMission.Country.Dtos.GetCountryOutput

@{
    ViewBag.Title = "Edit Country";
    Layout = "~/Views/Shared/_Layout.cshtml";
}             

@Html.Partial("_AddEditPartial", new ViewDataDictionary { { "ActionName", "Edit" } })

@model EnergyMission.Country.Dtos.GetNewCountryOutput

@{
    ViewBag.Title = "New Country";
    Layout = "~/Views/Shared/_Layout.cshtml";
}

@Html.Partial("_AddEditPartial", new ViewDataDictionary { { "ActionName", "Create" } })

@model  EnergyMission.Country.Dtos.GetCountryOutput

<h3>@ViewData["ActionName"]</h3>

@using (Html.BeginForm(@ViewData["ActionName"], "Countries"))
{
    @Html.AntiForgeryToken()

    <div class="form-horizontal">
        <h4>CountryTableModel</h4>
        <hr />
        @Html.ValidationSummary(true, "", new { @class = "text-danger" })
        <div class="form-group">
            @Html.LabelFor(model => model.AbbreviationCode, htmlAttributes: new { @class = "control-label col-md-2" })
            <div class="col-md-10">
                @Html.EditorFor(model => model.AbbreviationCode, new { htmlAttributes = new { @class = "form-control" } })
                @Html.ValidationMessageFor(model => model.AbbreviationCode, "", new { @class = "text-danger" })
            </div>
        </div>

        <div class="form-group">
            @Html.LabelFor(model => model.InternationalCountryDialCode, htmlAttributes: new { @class = "control-label col-md-2" })
            <div class="col-md-10">
                @Html.EditorFor(model => model.InternationalCountryDialCode, new { htmlAttributes = new { @class = "form-control" } })
                @Html.ValidationMessageFor(model => model.InternationalCountryDialCode, "", new { @class = "text-danger" })
            </div>
        </div>

        <div class="form-group">
            @Html.LabelFor(model => model.Name, htmlAttributes: new { @class = "control-label col-md-2" })
            <div class="col-md-10">
                @Html.EditorFor(model => model.Name, new { htmlAttributes = new { @class = "form-control" } })
                @Html.ValidationMessageFor(model => model.Name, "", new { @class = "text-danger" })
            </div>
        </div>
    </div>
}

然后在_AddEdit.cshtml中

_

为什么以下内容无效：

_

---

因为这给了我一个编译时错误。

那么答案是3。是html.beginform需要一个字符串作为它的第一个参数，并且当您使用ViewData时，它是一个

Dictionary<string, object> 

---

1。您可以尝试从基类派生两个dto类，并将该类设置为“添加”和“编辑”视图的模型类型创建单个视图，然后使用控制器指向单个视图，并使用存储库在保存方法中相应地插入/更新。但是，请注意，在下面的示例中，您需要确保模型是相同的-基于消除重复的原则。如果不可能考虑在你的视图中使用动态模型或者使用VIEW模型，你可以相应地映射属性（无论如何，我不想使答案变得过于复杂，因为我希望这提供了你需要的解决方案——在这里和那里进行一些重构）。 控制器和存储库的简化示例（使用viewmodel）

存储库

public class SqlProductRepository : IProductRepository
{
     private MyDataContext db;
     private Table<Product> _productsTable; 

    public IQueryable<Product> Products
    {
        get { return _productsTable; }
    }
    public void Save(Product product)
    {
        if (product.ProductID == 0)
        {
            _productsTable.InsertOnSubmit(product);
        }
        else if (_productsTable.GetOriginalEntityState(product) == null)
        {
            _productsTable.Attach(product);
            _productsTable.Context.Refresh(RefreshMode.KeepCurrentValues, product);
        }
        _productsTable.Context.SubmitChanges();
    }

公共类SqlProductRepository:IPProductRepository { 私有MyDataContext数据库； 私有表_productsTable； 公共卫生产品 { 获取{return\u productsTable；} } 公共作废保存（产品） { if（product.ProductID==0） { _产品稳定。InsertOnSubmit（产品）； } else if（_productsTable.GetOriginalEntityState（product）==null） { _产品稳定。附加（产品）； _productsTable.Context.Refresh（RefreshMode.KeepCurrentValues，product）； } _productsTable.Context.SubmitChanges（）； }

---

}

谢谢您的修复。我意识到我可以从同一个基类派生，但出于其他原因（即我无法控制该类的层次结构），我需要想出一个替代解决方案。我明白了，然后，一种可行的方法是使用您自己的ViewModel，然后通过使用映射器实用程序（如automapper或ValueInjectorTanks）简化将数据移入和移出DTO的过程。我用它作为我最终实现的基础。很高兴它有用；）