Question

尝试加载部分视图时出现此错误，我不知道问题所在：

System.InvalidOperationException：传递给的模型项字典的类型为'CDB.OrderM'，但这个字典需要一个型号项目 'System.Collections.Generic.IEnumerable`1 [CDB.tblItem]'。

public ActionResult Index()
        {
            OrderM om = new OrderM();
            List<tblItem> tList = db.Query<tblItem>("Select * from tblItem").ToList<tblItem>();
            ViewBag.tList = tList;
            return View(om);
        }

        public ActionResult Reqitem()
        {
            //tblItem ti= db.Query<tblItem>("select * from tblItem");
            var ti = db.Query<tblItem>("select * from tblItem");
            return PartialView("_rawmat",ti);
        }


My Partial View codes are-


 @model IEnumerable<CDB.tblItem>

    <p>
        @Html.ActionLink("Create New", "Create")
    </p>
    <table>
        <tr>
            <th>
                @Html.DisplayNameFor(model => model.ItemId)
            </th>
            <th>
                @Html.DisplayNameFor(model => model.ItemName)
            </th>
            <th>
                @Html.DisplayNameFor(model => model.MeasuringUnit)
            </th>
            <th>
                @Html.DisplayNameFor(model => model.Rate)
            </th>
            <th>
                @Html.DisplayNameFor(model => model.Quantity)
            </th>
            <th>
                @Html.DisplayNameFor(model => model.BagSz)
            </th>
            <th></th>
        </tr>

    @foreach (var item in Model) {
        <tr>
            <td>
                @Html.DisplayFor(modelItem => item.ItemId)
            </td>
            <td>
                @Html.DisplayFor(modelItem => item.ItemName)
            </td>
            <td>
                @Html.DisplayFor(modelItem => item.MeasuringUnit)
            </td>
            <td>
                @Html.DisplayFor(modelItem => item.Rate)
            </td>
            <td>
                @Html.DisplayFor(modelItem => item.Quantity)
            </td>
            <td>
                @Html.DisplayFor(modelItem => item.BagSz)
            </td>
            <td>
                @Html.ActionLink("Edit", "Edit", new { /* id=item.PrimaryKey */ }) |
                @Html.ActionLink("Details", "Details", new { /* id=item.PrimaryKey */ }) |
                @Html.ActionLink("Delete", "Delete", new { /* id=item.PrimaryKey */ })
            </td>
        </tr>
    }

    </table>

和索引视图代码是......

@model CDB.OrderM

@{
    ViewBag.Title = "Index";
    var tList = ViewBag.tList;
}

<h2>Index</h2>

@using (Html.BeginForm())
{
    @Html.ValidationSummary(true)

    <fieldset>
        <legend>OrderM</legend>

        <div class="editor-label">
            @Html.LabelFor(model => model.OdrId)
        </div>
        <div class="editor-field">
            @Html.EditorFor(model => model.OdrId)
            @Html.ValidationMessageFor(model => model.OdrId)
        </div>

        <div class="editor-label">
            @Html.LabelFor(model => model.OrderNo)
        </div>
        <div class="editor-field">
            @Html.EditorFor(model => model.OrderNo)
            @Html.ValidationMessageFor(model => model.OrderNo)
        </div>

        <div class="editor-label">
            @Html.LabelFor(model => model.OdrDate)
        </div>
        <div class="editor-field">
            @Html.EditorFor(model => model.OdrDate)
            @Html.ValidationMessageFor(model => model.OdrDate)
        </div>

        <div class="editor-label">
            @Html.LabelFor(model => model.OdrQty)
        </div>
        <div class="editor-field">
            @Html.EditorFor(model => model.OdrQty)
            @Html.ValidationMessageFor(model => model.OdrQty)
        </div>

        <div class="editor-label">
            @Html.LabelFor(model => model.OdrAmount)
        </div>
        <div class="editor-field">
            @Html.EditorFor(model => model.OdrAmount)
            @Html.ValidationMessageFor(model => model.OdrAmount)
        </div>

        <div class="editor-label">
            @Html.LabelFor(model => model.DDate)
        </div>
        <div class="editor-field">
            @Html.EditorFor(model => model.DDate)
            @Html.ValidationMessageFor(model => model.DDate)
        </div>

        <div class="editor-label">
            @Html.LabelFor(model => model.CId)
        </div>
        <div class="editor-field">
            @Html.EditorFor(model => model.CId)
            @Html.ValidationMessageFor(model => model.CId)
        </div>

        <div class="editor-label">
            @Html.LabelFor(model => model.Pod)
        </div>
        <div class="editor-field">
            @Html.EditorFor(model => model.Pod)
            @Html.ValidationMessageFor(model => model.Pod)
        </div>

        <p>
            <input type="submit" value="Create" />
        </p>
    </fieldset>
@Html.Partial("_rawmat")
}
<div>
    @Html.ActionLink("Back to List", "Index")
</div>

@section Scripts {
    @Scripts.Render("~/bundles/jqueryval")
}

Answer 1

您想要做的就是将@Html.Partial("_rawmat")更改为@Html.Action("Reqitem")。这是因为你的原始陈述说直接进入视图，因为你没有传递模型，它将传递与它所包含的视图相同的模型。

因此，如果您在索引视图中使用@Html.Partial("_rawmat")，它将传递它具有OrderM类型的模型，而不会实际调用您已写入的操作。

Answer 2

我不知道为什么人们错过了使用模型调用部分视图的可用语法

{@Html.RenderPartial("_PartialView",List<CDB.tblItem>) }

我假设局部视图使用类型List<CDB.tblItem>的模型。

如果要使用任何值填充模型。就在上面的语法之前使用

@{

//code to populate your model

}

Answer 3

如果你的部分视图需要一个List，那么改变这样的方法......

public ActionResult Reqitem()
        {
            //tblItem ti= db.Query<tblItem>("select * from tblItem");
            var ti = db.Query<tblItem>("select * from tblItem").ToList();//notice to List
            return PartialView("_rawmat",ti);
        }

我已将.ToList()添加到查询的末尾。

Answer 4

我认为问题出在@Html.Partial("_rawmat")内Index的第二次调用中。

它不传递模型参数，因此它传递了默认值CDB.OrderM。

改为使用它（它渲染动作而不是局部视图）：

@Html.Action("Reqitem")

无法在asp.net mvc 4中创建任何部分视图？

4 个答案: