Asp.net MVC EditorFor"类型'System.Object'是在未引用的程序集中定义的"错误

Question

@using (Html.BeginForm("Index", "Employees", FormMethod.Post, new { encType = "multipart/form-data", name = "EmployeeForm" }))
{
<table class="table table-bordered table-condensed table-striped">
    <tr>
        <th>
            Name
        </th>
        <th>
            Surname
        </th>
        <th>
            ID Number
        </th>
        <th>
            Email
        </th>
        <th>
            Birthdate
        </th>
        <th>
            Action
        </th>
    </tr>
    @Html.EditorFor(model => model.Employees)
</table>
}

第32行:@ Html.EditorFor(model => model.Employees)给出以下错误

CS0012: The type 'System.Object' is defined in an assembly that is not referenced. You must add a reference to assembly 'System.Runtime, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a'.

我在另一个没有出现此错误的项目中使用了这种类似的方法.

Answer 1

在web.config中查找:

<compilation debug="true" targetFramework="4.5"/>

添加System.Runtime程序集如下:

 <compilation debug="true" targetFramework="4.5">
      <assemblies>     
        <add assembly="System.Runtime, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" />   
      </assemblies>
    </compilation>

这通常是由MVC和PCL引起的,详见下文:

类型'System.Object'是在非引用的程序集中定义的(MVC + PCL问题)