C# 如何在处理 List<ViewModel> 时使用 @Html.CheckBoxFor()
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How to use @Html.CheckBoxFor() while dealing with a List<ViewModel>
提问by kbvishnu
This is my View. How to use CheckboxFor():
这是我的观点。如何使用 CheckboxFor()：
@using eMCViewModels;
@model eMCViewModels.RolesViewModel
@{
ViewBag.Title = "CreateNew";
}
<h2>
CreateNew<
/h2>
@using (Html.BeginForm())
{
@Html.ValidationSummary(true)
<fieldset>
<legend>RolesViewModel</legend>
<div class="editor-label">
@Html.LabelFor(model => model.Name)
</div>
<div class="editor-field">
@Html.EditorFor(model => model.Name)
@Html.ValidationMessageFor(model => model.Name)
</div>
<div>
@foreach (RoleAccessViewModel mnu in Model.RoleAccess)
{
// How to use checkboxfor here?
}
</div>
<p>
<input type="submit" value="Create" />
</p>
</fieldset>
}
<div>
@Html.ActionLink("Back to List", "Index")
</div>
@section Scripts {
@Scripts.Render("~/bundles/jqueryval")
}
Model.RoleAccessis a List<RoleAccessViewModel>and I want to create checkbox using @Html.CheckBoxFor().
Model.RoleAccess是一个List<RoleAccessViewModel>，我想使用@Html.CheckBoxFor().
This is my RoleAccessViewModel
这是我的 RoleAccessViewModel
public class RoleAccessViewModel
{
public int RoleID { get; set; }
public string RoleName { get; set; }
public int MenuID { get; set; }
public string MenuDisplayName { get; set; }
public string MenuDiscription { get; set; }
public string IsEnabled { get; set; } // changed to bool
}
Suppose I have 5 items in list, then I need 5 checkbox with ID=menuID and Text = menuDisplayName. How can I achieve this?
假设我在列表中有 5 个项目，那么我需要 5 个 ID=menuID 和 Text = menuDisplayName 的复选框。我怎样才能做到这一点？
EDIT
编辑
My attempt
我的尝试
@Html.CheckBoxFor(x=>x.RoleAccess.SingleOrDefault(r=>r.MenuID==mnu.MenuID).IsEnabled )
@Html.LabelFor(x=>x.RoleAccess.SingleOrDefault(r=>r.MenuID==mnu.MenuID ).MenuDisplayName )
But after changing the type of IsEnabledfrom stringto bool. The checkbox works. But Label prints only MenuDisplayNameinstead of values . Can any one helps ?
但是在将IsEnabledfrom的类型更改string为bool. 复选框有效。但是 Label 只打印MenuDisplayName而不是 values 。任何人都可以帮忙吗？
采纳答案by Madman
Change foreach with for
用 for 改变 foreach
@for(int i = 0; i < Model.RoleAccess.Count; i++)
{
Html.CheckBoxFor(Model.RoleAccess[i].IsEnabled, new { id = Model.RoleAccess[i].MenuID });
Html.DisplayFor(Model.RoleAccess[i].MenuDisplayName); // or just Model.RoleAccess[i].MenuDisplayName
}
回答by AliR?za Ad?yah?i
If I undestood right, You mean this? And IsEnabledshould bool type
如果我理解正确，你的意思是这个？并且IsEnabled应该布尔类型
model
模型
public class RoleAccessViewModel
{
public int RoleID { get; set; }
public string RoleName { get; set; }
public int MenuID { get; set; }
public string MenuDisplayName { get; set; }
public string MenuDiscription { get; set; }
public bool IsEnabled { get; set; }
}
view
看法
@foreach (RoleAccessViewModel mnu in Model.RoleAccess)
{
@Html.CheckBoxFor(m => mnu.IsEnabled )
}
回答by Darin Dimitrov
CheckBoxForworks with boolean properties only. So the first thing you need to do is to modify your view model in order to include a boolean property indicating whether the record was selected:
CheckBoxFor仅适用于布尔属性。所以你需要做的第一件事是修改你的视图模型，以包含一个布尔属性，指示是否选择了记录：
public class RoleAccessViewModel
{
public int RoleID { get; set; }
public string RoleName { get; set; }
public int MenuID { get; set; }
public string MenuDisplayName { get; set; }
public string MenuDiscription { get; set; }
public bool IsEnabled { get; set; }
}
and then I would recommend replacing your foreachloop with an editor template:
然后我建议用foreach编辑器模板替换你的循环：
<div>
@Html.EditorFor(x => x.RoleAccess)
</div>
and finally write the corresponding editor template which will automatically be rendered for each element of the RolesAccess collection (~/Views/Shared/EditorTemplates/RoleAccessViewModel.cshtml):
最后编写相应的编辑器模板，该模板将自动为 RolesAccess 集合 ( ~/Views/Shared/EditorTemplates/RoleAccessViewModel.cshtml) 的每个元素呈现：
@model RoleAccessViewModel
@Html.HiddenFor(x => x.RoleID)
... might want to include additional hidden fields
... for the other properties that you want to be bound back
@Html.LabelFor(x => x.IsEnabled, Model.RoleName)
@Html.CheckBoxFor(x => x.IsEnabled)
回答by vbjay
I know it is pretty old but
我知道它很旧但是
In your model use DataAnotations Display Attribute
在您的模型中使用DataAnotations 显示属性
public class MyModel
int ID{get; set;};
[Display(Name = "Last Name")]
string LastName {get; set;};
end class
