传递到字典中的模型项属于类型，但此字典需要类型为“System.Collections.Generic.IEnumerable”的模型项

Question

这就是我想要做的。 我不明白为什么它需要一个可枚举的列表。

地址控制器.cs

public ActionResult ShowAddresses(List<Address> ReturnAddresses)
    {
        ShowAddressViewModel viewModel = new ShowAddressViewModel() { Addresses = ReturnAddresses, Message = "New" };
return PartialView("_ShowAddr", viewModel);

}

ShowAddressViewModel.cs

public class ShowAddressViewModel
{
    public List<Address> Addresses { get; set; }
    public string Message { get; set; }
}

_ShowAddr.cshtml

@model PeopleSoftControlsPOC.Models.ShowAddressViewModel
<script type="text/javascript">

</script>
<form>
<div class="addressBlock">
<table id="AddressTable">
    @{int i = 0;}
     @{PeopleSoftControlsPOC.Models.ShowAddressViewModel AddrModel = Model;}
    @foreach (var item  in AddrModel.Addresses)
    {
        <tr id = "@(i)">
            <td>@(AddrModel.Addresses[i].Address1)
            </td>
            <td>@(AddrModel.Addresses[i].Address2)
            </td>
            <td>@(AddrModel.Addresses[i].City)
            </td>
            <td>@(AddrModel.Addresses[i].State)
            </td>
            <td>@(AddrModel.Addresses[i].Zip)
            </td>
        </tr>
        @(i++)
    }
</table>
</div>
</form>

编辑

从另一个局部视图的 java 脚本调用

$.ajax(url, {
            data: { ReturnAddresses : InboundAddresses },
            type: 'POST',
            cache: false,
            crossDomain: true,
            success: function (data) {
                //Populate the form values
                // Start Dialog Code
                $myWindow = jQuery('#myDiv');
                //instantiate the dialog
                $myWindow.html(data);
                $myWindow.dialog({
                    title: 'Select an address',
                    modal: true,
                    width: 'auto'
                });
                $myWindow.show();
                $myWindow.dialog("open");
                // End Dialog Code

                $('#AddressTable').on('click', 'tr', function () {
                    alert('You clicked row ' + ($(this).index()));
                });
                addAddress(Addresses, Message)
            },
            error: function (jqXHR, textStatus, errorThrown) {
                $('#Message').val('Kaboom!!! (The call blew up...#thatsucks)');
                alert('The Dialog Box call failed...Sorry :(');
            }
        });
    }

“/PSPOC”应用程序中的服务器错误。 -------------------------------------------------- ------------------------------

The model item passed into the dictionary is of type 'PeopleSoftControlsPOC.Models.ShowAddressViewModel', but this dictionary requires a model item of type 'System.Collections.Generic.IEnumerable`1[PeopleSoftControlsPOC.Models.ShowAddressViewModel]'. 
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. 

Exception Details: System.InvalidOperationException: The model item passed into the dictionary is of type 'PeopleSoftControlsPOC.Models.ShowAddressViewModel', but this dictionary requires a model item of type 'System.Collections.Generic.IEnumerable`1[PeopleSoftControlsPOC.Models.ShowAddressViewModel]'.

Source Error: 

An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.  


Stack Trace: 


[InvalidOperationException: The model item passed into the dictionary is of type 'PeopleSoftControlsPOC.Models.ShowAddressViewModel', but this dictionary requires a model item of type 'System.Collections.Generic.IEnumerable`1[PeopleSoftControlsPOC.Models.ShowAddressViewModel]'.]
   System.Web.Mvc.ViewDataDictionary`1.SetModel(Object value) +383
   System.Web.Mvc.ViewDataDictionary..ctor(ViewDataDictionary dictionary) +625
   System.Web.Mvc.WebViewPage`1.SetViewData(ViewDataDictionary viewData) +74
   System.Web.Mvc.RazorView.RenderView(ViewContext viewContext, TextWriter writer, Object instance) +138
   System.Web.Mvc.ViewResultBase.ExecuteResult(ControllerContext context) +378
   System.Web.Mvc.<>c__DisplayClass1c.<InvokeActionResultWithFilters>b__19() +33
   System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilter(IResultFilter filter, ResultExecutingContext preContext, Func`1 continuation) +727120
   System.Web.Mvc.ControllerActionInvoker.InvokeActionResultWithFilters(ControllerContext controllerContext, IList`1 filters, ActionResult actionResult) +265
   System.Web.Mvc.ControllerActionInvoker.InvokeAction(ControllerContext controllerContext, String actionName) +727076
   System.Web.Mvc.Controller.ExecuteCore() +159
   System.Web.Mvc.ControllerBase.Execute(RequestContext requestContext) +334
   System.Web.Mvc.<>c__DisplayClassb.<BeginProcessRequest>b__5() +62
   System.Web.Mvc.Async.<>c__DisplayClass1.<MakeVoidDelegate>b__0() +15
   System.Web.Mvc.<>c__DisplayClasse.<EndProcessRequest>b__d() +52
   System.Web.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +606
   System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +288



--------------------------------------------------------------------------------
Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.0.30319.18044 

Answer 1

假设您正在尝试使用

@Html.Partial("_ShowAddr", Model.Adr)

并且您的模型无需通过控制器即可发送到视图，因此您实际上是向视图发送地址集合而不是包装的视图模型。

试试这个方法：

@{ Html.RenderAction("ShowAddresses", Model.Adr); }

编辑

其实：

@{ Html.RenderAction("TestPart", new { ReturnAddresses = Model.Adr }); }

Answer 2

我认为是

 return PartialView("_ShowAddr", viewModel.ToList());

并在你的_ShowAddr.cshtml顶部

 @model IEnumerable<PeopleSoftControlsPOC.Models.ShowAddressViewModel>

我在做像你一样的事情