查看未通过模型的IEnumerable

本文介绍了查看未通过模型的IEnumerable的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

修改：删除了部分景观，使事情变得更简单。现在我只需要找出为什么视图不会发布该值

• ViewModelProspectUsers

• ViewModelProspectUsers

public class ViewModelProspectUsers { public int Id { get; set; } public string User { get; set; } public IEnumerable<ViewModelProspectSelect> Prospects { get; set; } }

ViewModelProspectSelect

ViewModelProspectSelect

public class ViewModelProspectSelect { public int ProspectID { get; set; } public string Name { get; set; } public bool IsSelected { get; set; } }

查看

View

@model OG.ModelView.ViewModelProspectUsers @using (Html.BeginForm()) { @Html.HiddenFor(model => model.Id) <h5>Please Select Prospects you wish to assign to this User.</h5>

----- 这里是部分曾经是，这些值没有被发布到 [发布] 方法 ------

-----HERE is where the partial used to be, these values aren't being posted to the [Post] Method------

-----------------------------------------但是他们填充就好了----------------------------------------

-----------------------------------------However they are populating just fine----------------------------------------

@foreach (var item in Model.Prospects) { @Html.HiddenFor(x => item.ProspectID) @Html.DisplayFor(x => item.Name) @Html.EditorFor(x => item.IsSelected) }

@*@Html.Partial("_ShowProspectCheckedForUser", Model.Prospects)*@ @*@Html.Partial("_ShowProspectCheckedForuser", new OG.ModelView.ViewModelProspectSelect())*@ <input type="submit" value="Save changes" /> @Html.ActionLink("Cancel", "Index") }

• 发表

  • Post

    [HttpPost] public ActionResult UsersInProspect(ViewModelProspectUsers viewModel)

  如果我是来看看 viewModel.Prospects（M = GT; m.isSelected） //＆LT; - 该值为空不宜

  If i were to look at viewModel.Prospects(m=>m.isSelected) //<- this value is Null shouldn't be

  我的视图模型Variableis显示的数据，但不适合了IEnumerable

  My viewmodel Variableis showing Data but not for the Ienumerable.

  推荐答案

  在用列表类型的对象打交道，你必须引用它们使用数组方式有一个方式产生的字段名称，该模型绑定器可以解析他们回来，即

  When dealing with list-type objects, you must reference them with array notation to have the field names generated in a way that the modelbinder can parse them back, i.e:

  for (var i = 0; i < Model.Count(); i++) { @Html.LabelFor(m => Model[i].SomeProperty) @Html.EditorFor(m => Model[i].SomeProperty) }

  在您的情况，你最好用视图模型包含列表和添加服选属性的项目，这样就可以跟踪哪些人或未被选中。

  In your scenario, you'd be better served by using a view model to contain your list and adding a Selected property to the items so that you can track which ones were or were not selected.

  public class ViewModelProspects { public List<ViewModelProspectSelect> Prospects { get; set; } } public class ViewModelProspectSelect { // Whatever else you have public bool Selected { get; set; } }

  然后，在你的看法：

  Then, in your view:

  @model ViewModelProspects @using (Html.BeginForm()) { for (var i = 0; i < Model.Prospects.Count(); i++) { <label> @Html.HiddenFor(m => Model.Prospects[i].Id) @Html.CheckboxFor(m => Model.Prospects[i].Selected, true) @Model.Prospects[i].Name </label> } }

  最后，改变你的操作方法签名：

  And finally, change your action method signature:

  [HttpPost] public ActionResult UsersInProspect(ViewModelProspects model)

  然后，您可以很容易地获得与动作内选定ID列表：

  Then, you can easily get the list of selected ids inside the action with:

  var selectedIds = model.Prospects.Where(m => m.Selected).Select(m => m.Id)